To make a homemade portable car air conditioner you will need:
Plastic tank with lid. (A plastic basket or something else, preferably with a hinged lid, but not necessary);
- Car heater radiator;
- Cooling system hoses;
- computer cooler - 2 pcs.;
- bilge pump (can be purchased on ebay for less than $10;
- cigarette lighter plug and wires;
- Bolts, nuts, screws.
Manufacturing
Mark the holes on the cover plastic tank under the coolers, and cut out 2 holes with a knife.
Using self-tapping screws, screws or special fasteners, secure 2 coolers to the plastic cover.
Mount the heater radiator to the plastic cover; this is very easy to do, just drill a few holes along the edges and secure the radiator with bolts.
The radiator can be covered with a plastic cover cut out of plastic.
Mount the bilge pump at the bottom of the plastic tank, and connect it using a hose to terminal 1 on the heater radiator.
If the lid of a plastic tank does not have a hinged lid, it is not a problem. we make it foldable using a piano hinge.
To prevent water from leaking out of the plastic container when circulating through the stove radiator, a piece of rubber was secured to the lid using self-tapping screws.
Connecting wires.
At the same time, use glue to connect the wires from the coolers and the pump to the wires of the cigarette lighter plug.
Homemade portable air conditioner assembly.
The operating principle of a homemade portable car air conditioner is described in the photo below.
Several liters of cold water are poured into the container and a bag of ice is lowered. Cold water is pumped into the heater radiator using a bilge pump, cools it and flows down into the tank by gravity.
2 coolers use the coolness of the stove radiator to cool the air.
Using a homemade portable car air conditioner in your car. Powered by cigarette lighter.
Using a homemade car portable air conditioner indoors. runs on battery or power supply.
Move in hot weather driving a car without air conditioning is unpleasant and undesirable for a number of reasons. Heat inside a car can not only cause the body to overheat, but also increase the risk of trouble on the road, as the driver becomes less alert when overheated. We can add to this that no one likes to sit in a hot car.
The problem of air conditioning is especially acute for those situations, and when you have to stand in traffic jams for many hours, there is no counter flow of air into the open window. Therefore, the homemade water conditioner, which is presented below, is quite simple in design and inventive idea, although low-power, but for some time it may be useful for you on the road for the car and its passengers.
Details on video slides
It operates using ice, so it does not work for long, about 1 hour. This refrigerator-air conditioner for a car can be improved using Peltier elements. Their effect is that when voltage is applied, one side of the element will heat up and the opposite side will cool. As a result, we can cool the water in the air conditioner. Therefore, it is worth considering improving the design presented below.
What do we need to make an air conditioner?
A plastic container, or, as it is otherwise called, a cooler bag. Small water pump with 12 volt power. Suitable for an aquarium. Radiator car heater. Several pieces of wire. Pipes for connecting the pump. A pair of fans. Dremel, silicone, piano hinges, plug for connecting to the cigarette lighter.
Act one. We install the pump on a homemade air conditioner.
First you need to strengthen the pump; it must be installed at the bottom of the container. The wires from it need to be brought out to connect to the power source. As fans in in this case 12 volt PC coolers are used. They are placed in the cover of the device. Since it has two layers in plastic containers, it needs to be done from the inside square hole according to the size of the coolers. WITH reverse side You need to make two holes using a Dremel. Fans will draw air from inside. Let's secure the cooler with its original screws.
Step 3. Install the radiator.
We will install it from the inside of the lid. The pipes should be directed downwards. To install the radiator we use silicone. In addition, you can put it on hot glue or epoxy resin.
Step 4: Complete the creation of the air conditioner.
For ease of lid design and quick replacement of ice, you can use a piano hinge. We connect the radiator to the pump using a hose. The outlet hose from the pump is connected to the radiator inlet. To avoid the sound of water, it is advisable to outlet pipe also put on the hose.
Next, we connect all the elements to the vehicle’s on-board network. If less than 12 volts are needed for the coolers and pump to function, try using Charger from cell phones. In the author's model, the source is a 12 volt output through the cigarette lighter.
For a homemade simple air conditioner to work, ice is placed in a plastic container and water is added. When the power is turned on, the pump through the radiator will pump cold water. At the same time, the coolers will remove cold air from the container into the cabin, cooling it. Naturally, when the air conditioner is operating, you need to close all the windows and doors of the cabin.
It will be cool inside the car for at least one hour. For example, in a traffic jam, this air conditioner will be a salvation from the heat. There is another option that people sometimes want to do - (the link leads to an article about a Peltier device), which is unlikely to be effective in a car.
About where to buy at the best price low prices goods for cars, .
Probably, one day air conditioning in a car will become the absolute norm, regardless of cost and configuration. However, there are still millions of cars “running” on our roads that do not have this useful option, and new ones, also without air conditioning, are still being produced. And, therefore, every summer, the heads of drivers of cars without an air conditioner, hot from the sun, are visited by nervous thoughts about ways to cool the “gas chamber” of a sun-heated cabin using alternative and “asymmetrical” methods.
The first thing a sufferer finds on the Internet is the search for “cool the inside of a car without air conditioning,” “escape the heat without air conditioning,” etc. is a proposal to use PET bottles with ice. This idea has been wandering from site to site for years and offhand it even looks workable.
Confidence is added by numerous descriptions of garage designs of automobile surrogate “air conditioners” made on the knee and using the same frozen water in soda or beer bottles as a “coolant”. They are a variety of boxes and crates, lined inside with foil to prevent loss of cold, and with installed fans to blow air through the ice. In principle, this is a logical direction of development, aimed at increasing the efficiency of the technology, although engineering loses the main thing - attractive simplicity. In any design, the factor of human laziness must be taken into account - no matter how effective the development is, sooner or later it will be thrown on a dusty shelf even by the developer himself if it requires a complex sequence of actions or difficult preparatory work... Freezing and then taking a couple of bottles with you before the trip is something anyone can do, but fencing boxes with fans is, in the opinion of most, overkill...
One way or another, the idea is floating among the masses, but there are very few who have tried the technology in practice. Therefore, our task is to destroy or confirm the myth with a thermometer in hand. To check, having received conclusions in hard numbers, and not in subjective sensations, is the simplest basic version– will a “one and a half” with ice, placed on the dashboard under a stream of air from a fan, be able to make staying in a car without an “air conditioner” at least somewhat more comfortable? And thereby understand whether it is, in principle, advisable to apply further creativity, hands and strength in this direction?
The experiment will look like this. We take two identical cars of the same color, put them side by side in the sun for several hours. After warming up the interiors sun rays in one car we simply turn on the cabin fan to blow outside air, and in the other we start recirculation and let the air flow onto the glass, blowing it over several liters of ice frozen in PET bottles lying on the dashboard. After 15 minutes, we look at the result - how much can we lower the temperature? So, let's go!
The temperature inside the car after three hours spent in the sun is 38 degrees Celsius:
We put ice bottles in one machine, turn on the fans in both, time the time - 15 minutes...
The result is depressing... In a car in which the fan was working to blow outside air into the cabin, the temperature dropped to 33 degrees, and in a car in which recirculation was turned on and the air was racing in a circle, blowing bottles of ice - only to 35.5 degrees... Banal blowing, even without open windows, turned out to be more effective than blowing ice in a confined space!
The myth about bottle cooling persists, and although the result was predictable, it was still worth checking. However, it is still worth noting that six liters of ice are capable of more, just not in this form!
Any device that operates on heat transfer, be it an air conditioner or a heater, most important characteristic– working surface area. For bottles on the dashboard it is extremely small, plus their airflow is organized ineffectively. If we had placed the same six liters of ice in a flat ribbed container similar to a car radiator, placed it in the car interior and started blowing air through it, the effect would have been much more noticeable. It’s just that the accompanying difficulties make such an event a little more than completely meaningless...
Other dead-end ideas for “alternative air conditioners”
What other ideas come to mind for car owners without air conditioning with enviable regularity as summer approaches? You can, of course, install a non-standard universal air conditioner - in principle, it will not differ in any way from the standard one - except that the controls on the panel will stand out a little in the overall style of the interior. But the cost of installing a condo on a budget passenger car with components and turnkey work today is approximately 60,000 rubles. A little expensive, in general...
Therefore, such a decision is quickly discarded and the “creative hacking” begins. And here, of course, in second place after frozen PET bottles comes the thought of using a mobile or window air conditioner in the car, the cost of which starts from a more or less affordable 10,000 rubles even now, during the hot season.
It seems to many that if you put a household monoblock air conditioner in the back seat, power it with 12-220 volts through an inverter and stick the hot air hose out the window, you can enjoy the coolness! However, none of these dreamers have yet achieved real success... Why is the idea unviable?
The fact is that even the weakest window air conditioner consumes about one and a half kilowatts of power in cooling mode from a 220-volt network. The inverter efficiency of 12/220 is clearly not 100%, but for ease of demonstration on the fingers, we will take it as one hundred. Accordingly, from the 14-volt on-board network, such an air conditioner through an inverter will consume 1,500 watts/14 volts = 107 amperes. The current is crazy, the wiring will be as thick as a finger + many generators even have a lower maximum current output limit. We're not even talking about the fact that the inverter must be designed for long-term operation with a power of at least a couple of kilowatts - such inverters, as a rule, belong to expensive and specific professional equipment, are extremely rare on sale and cost a lot of money...
The idea in third place is the use of Peltier elements. When a current is applied to a semiconductor wafer, it heats up on one side and cools down on the other. It is not difficult to buy the elements, they are not that expensive. Car portable refrigerator boxes work well on such plates, and many people think that an air conditioner can be created using the same principle - inexpensive, silent, without a compressor, refrigerant, pipes and evaporators.
Alas, you will not be able to find a single really working “autocondya” design based on Peltier modules, although there are a lot of projects on various automotive blogs and forums, many even with intermediate reports on the stages of work, demonstrating the considerable efforts of DIY enthusiasts. Why? Yes, for the same reason why bottles with ice don’t work... Too small a “cold release” surface on the cold side and difficulty in organizing effective heat removal from the hot side. To ensure at least some cooling of the interior, from Peltier modules to passenger car there must be a roof...
***
So, whatever one may say, there is no alternative to the traditional automobile compressor air conditioner yet and is not expected in the near future. After all, even in hybrids and electric vehicles that are at the forefront of progress, it has a classic design that has not changed fundamentally since the days of the first air-conditioned cars - Packards and Caddilacs of the early 40s of the twentieth century.
Does your car have air conditioning?
On hot summer days, many of us go to the countryside or to Vacation home. At the same time, not everyone there has a full-fledged split system.
You can, of course, get out of the situation by installing a mobile option. But even here there are problems with connecting and removing warm air. 
What to do? Suffer from sweltering heat? Not at all, there are at least five ways to assemble homemade devices that can partially replace a professional air conditioner.
You can make them at home, without special knowledge of thermophysics and special skills of a craftsman. Let's look at all these methods in more detail, ranging from ineffective ones to those that will significantly reduce the temperature by several degrees and comfortably spend the weekend at the dacha.
Air conditioner without electricity
Let's start with an option that does not require any electricity, ice and all kinds of fans. Some even try to apply the law of conservation of ideal gas to this method of cooling.
For this homemade miracle you will need a lot plastic bottles. It is best to take two-liter ones with a large diameter.
Cut off their top part along with the neck by about 1/3. 
Don’t throw away the lids from them, they will be needed too. They just need a little tweaking. To do this, use a stationery knife to cut off the top part of them. 
Cardboard can also be used as a base, as is done, for example, in India or Bangladesh. 
That's where I came from this method cooling.
However, as they say - the rain comes, the cardboard goes away. Therefore, plywood is a more stable and reliable material.
On this sheet, drill holes every 15cm along the diameter of the neck of the bottles. 
It is best to use feather drills. But you can also use a wood crown. 
After preparing all the holes, insert the bottles into them and screw them on the back with cut caps. 
The plywood itself is mounted in the window of the bedroom or the room where cold is required. If you go to the necks of the bottles and put your palm on them, you can really feel the cold breath of a cool breeze. 
How does it all work? After all, there is no fan or ice here that would provide much-needed coolness? Where does the cooling come from?
The inventors explain it very simply. The wide part of the bottle that faces the street acts as an air intake. Under the force of the breeze, the air is compressed and enters the room with the effect of a fan. 
However, one condition must be met here - it must be cooler outside than in the room.
This design can work well at night. Moreover, there will be no noise from the fan blades.
However, if you think carefully and remember the laws of physics, then not everything is so simple here. Doesn't an open window look like a narrowed bottle neck?
In theory, a large volume of warm air from the street, passing through a narrow window, should ultimately produce the same cool draft. However, this does not happen.
The same can be said about this “air conditioner”. 
During the day, the entire cooling effect of the room will occur ONLY due to its darkening.
With this design you simply exclude the penetration of direct rays of the sun. Consequently, the floor and walls heat up less. This is where all the efficiency comes from. 
Where does the coolness come from, because if you put your hand near the bottles, you can really feel it?
In fact, you feel this cold not because the air has cooled, but because at a higher speed, the jet carries away more molecules of moisture or sweat from the surface of your body.
This is where all the sensations come from. To really cool the air, you would need not plastic bottles, but brass tubes three meters long! The law of conservation of energy has not yet been repealed. 
There would be a fan in the wide part of the tube and would drive air along the inner walls, which would be heated by it and thereby cool it. Next, throwing a cold stream outwards, from the back narrow side. 
However, where there is no electricity at all and there is no desire to buy fans, the method can be tried. If you open another window or door at the same time, the effect can be enhanced by a draft.
Just don’t forget about its danger and your health. However, let us repeat once again, all this works if it is much cooler outside than in your house. If it’s +35C or +40C outside, then a draft won’t help any of the residents of your house. 
And you are left without daylight. You can, of course, replace plywood with plexiglass, but the efficiency of such an air conditioner will immediately drop by 90%.
And from the outside, such a futuristic design does not decorate the facade of the building at all. The neighbors will laugh. 
And don’t forget about mosquitoes, which will be sucked whistlingly right into your apartment. 
Therefore, let's consider more effective and practical options.
Bottled ice and floor fan
For the next method you will need an ordinary floor fan. Without modernization, there is not much sense from it. Unless, of course, you sit directly in front of him all day and night. 
In fact, it simply circulates hot air around the room, but does not cool it. However, with simple manipulations, everything can be changed dramatically. 
All you need to do is attach a couple of bottles of ice to it with wire. Fill plastic bottles with water and freeze them in the freezer. 
When the “cooling cartridges” are ready, tie their necks together with wire. 
After that, hang them behind the fan blades. 
To ensure that cold air is taken in from the rear and no extraneous warm air is sucked in, glue a homemade cardboard casing around the circumference of the fan with double-sided tape. 
In fact, the air conditioner is already ready for use. Most of the time when making it will take you to freeze the ice in bottles.
To have a constant replacement supply, I advise you to freeze 6-8 of them in advance. In just half an hour, such an installation can “chill” small room a couple of three degrees.
However, this would seem simple method, many shortcomings.
- ice in bottles melts quickly
You will have to place a basin under the fan, and change the cartridges periodically. Therefore, you definitely can’t leave such a thing on at night. 
- short circuit danger
Your floor fan is turned on via a 220V carrier. And next to the wires from it, it will be constantly humid and damp. You will also need special carriers. 
Therefore, it is recommended to replace melted bottles with new ones only after turning off the power. Otherwise, the whole thing could short-circuit and lead to a fire. 
Air conditioner from a plastic container
To make the third option, you will have to tinker a little with its production. For assembly you will need:
- plastic container or cardboard box
- corner from a plastic pipe
These usually go to water supply or sewerage.
- food foil
- scotch
First of all, cover all the inner walls and bottom of the box with foil. 
Install a fan and a neck from a plastic pipe on the top of the lid. Use a marker to trace the outline and cut out the corresponding holes.
The operating principle is simple. The fan will suck hot room air inside, and cold air should come out through the pipe.
To do this, place bottles of ice inside again. You can't go anywhere without them. 
To prevent extraneous air leaks, it is advisable to seal the gaps from the holes after installing the tube and fan with tape.
Plug the hood plug into the socket and enjoy the coolness. Such a homemade air conditioner can cool the room by almost 7-8 degrees in half an hour. 
Which is a more than acceptable result for such a cheap model, assembled with your own hands. Not all floor-mounted mobile air conditioners are capable of coping with such a task.
At the same time, there will be no puddles, basins or safety problems around. Ice in bottles will, of course, melt, so it is better to use plastic containers rather than cardboard boxes. 
Someone on the Internet advises replacing regular bottled ice with dry ice. Supposedly this will get rid of moisture. Don't listen to such advisers.
When dry ice evaporates in confined spaces, it emits dangerous concentration carbon dioxide. Therefore, it is even recommended to transport it only in trunks.
Bucket conditioner
The above design can be improved and simplified. Instead of a container, use a plastic bucket with a lid, and insulate its walls.
To do this, place pre-cut pieces of foam plastic in even rows inside the bucket. 
The bottom is also insulated with foam plastic. 
All this will allow the ice to retain its original condition for more time and your air conditioner will last much longer than the previous model.
In the upper part of the bucket, cut out the outlet holes and glue the pipe sections there. The cold will come through them.
The exhaust fan cuts into the lid and sits tightly on the glue. 
Frozen bottles or ice in plastic bags are again placed inside. 
The lid closes and voltage is supplied to the fan. This air conditioner will work properly for a much longer time than the first model in a plastic box. 
Autonomous homemade battery-powered air conditioner
But to assemble a truly autonomous, working air conditioner without water bottles, floor fans and 220V power cords, you will have to spend some time and purchase certain materials in advance. 
You will need:
- expanded polystyrene
- cardboard
- glue
- one pack of diapers
- corrugated sleeve
- two fans from computer processors
- accumulator battery
- button
First of all, you need to assemble the thermally insulated housing of the future air conditioner. For this purpose, polystyrene foam is ideal. They usually insulate the walls of houses or floors. 
Choose the size of the box so that it can be conveniently transported in the trunk of a car. Cut out the rectangles and assemble the cooling box.
Cover everything on top with thick cardboard. You can put foil on the bottom itself. During operation, this machine will form condensation. 
To remove it, it is advisable to provide drainage, in the form of a hole with a tube somewhere in the lower corner.
Cut holes for fans in two walls. One will suck in warm air, the other will throw out cold air.
Glue a plastic corrugated sleeve to the one that goes to the entrance, through the neck of the bottle. 
This will allow the cooled air within the system to be used more efficiently.
To power coolers, install directly in the box battery at 12V. 
Similar ones are in the sources uninterruptible power supply UPS. Instead of a battery, you can assemble a block of 18650 capacitive batteries for the appropriate cooler voltage.
To periodically turn the ventilation on and off, a separate on/off button would be useful. You run one of the wires from the battery to the coolers through it. 
When the refrigeration box is ready, it is necessary to make the cold batteries themselves, due to which the cooling will actually occur.
And in this case it is better to use diapers rather than frozen bottles!
Moisten them generously with tinted water, and cut out the same gel powder that absorbs all the moisture.
You should end up with a kind of jelly-like mass that, unlike water, will not spread or drip. This is what needs to be cooled properly.
Hammer the dense plastic bags and seal them on all sides. 
After that, throw your refrigeration batteries into the freezer. 
This substance holds the cold much better and longer ice water in bottles. After complete freezing, fill the inside of the air conditioner with such bags.
The main task is to cover the corrugation, assembled in the form of a well, on all sides. As a result, this hose will freeze and cool the air sucked through it. 
To increase heat transfer, instead of a plastic hose, you can use a metal hose. After filling the container to capacity, close the top lid and turn on the fans.
The temperature of the air that will ultimately be emitted by such an air conditioner can be 10 degrees lower than that in the room. 
Autonomous operation of such a cooling system is several hours. After this, you will have to replace the refrigeration batteries.
I don’t think that you will recklessly drive this cold machine in your home for 24 hours. Therefore, for two evenings and two nights at the dacha on weekends, this is a very acceptable option.
This publication is mainly addressed to those readers who do not yet have the opportunity to purchase a factory-made air conditioner, as well as pay the rather “significant” electricity bills that accrue as a result of its use. In addition, the devices on sale have a number of shortcomings that force some particularly “picky” users to abandon such equipment - this will be mentioned below.
But living in intolerable summer stuffiness, which is especially typical for rooms that are not thermally insulated enough apartment buildings– the prospect is also completely bleak. Therefore, homeowners have a question about whether it is possible to make an air conditioner with their own hands.
There are several options that will help cool the air in the room using homemade devices. Probably, we should immediately warn that there are many skeptics who do not want to put in the effort and conduct such experiments. They actively criticize these inventions, posting derogatory comments and predicting in advance that the project will not work. However, there is nothing easier than testing the effect of homemade products on yourself, especially since each of them does not require high costs and excessive effort, since any person should be able to make them if he is tired of the constant stuffiness in the rooms.
So that anyone can try to make and test one of the homemade air conditioners, several simple designs will be presented below. Some of them can be made literally in an hour, and using the most affordable materials.
What is an air conditioner? Advantages and disadvantages of factory models
First, it’s worth understanding what it is, what the principle of its operation is and what it is used for.
Everyone knows that such devices are used to maintain a room temperature that is comfortable for humans. Air conditioners, the most affordable and simple in design, are designed only to cool the air. However, today innovative models are being produced that are capable of not only completely controlling temperature regime in the room at any time of the year, but also to purify and humidify the air.
Basic device of air conditioners
All commercially available devices are divided into evaporative and compression
They differ in their functions in that evaporative models can only cool and humidify air, while compression models can be designed to both cool and heat it.
Compression air conditioner
Compression air conditioners can be called the most common devices. They can be seen everywhere, built into window openings or hung on the walls of buildings.
The design of a compression device, like any other refrigeration equipment, consists of the following main components that perform certain functions:
- The compressor keeps the refrigerant moving around the appliance circuit.
- The condenser (radiator) is designed for cooling and condensing freon.
- The evaporator is designed to turn liquid into vapor when the freon pressure is sharply reduced.
- Thermostat - controls the current flow of freon passing through the evaporator, thereby maintaining the temperature at a given level.
- Fans are installed both outside the air conditioner and inside, and are designed to activate heat exchange processes and provide a directed flow of cooled air.
The operation of a compression air conditioner can be briefly described as follows:
- A gaseous refrigerant with a temperature of +10÷20 degrees enters the compressor from the evaporator under a pressure of 3–5 atmospheres.
- The compressor compresses the refrigerant to reach a pressure of 15–25 atmospheres, while it heats up to a temperature of 75–90 degrees.
- Next, the freon enters the condenser, where it is cooled by a flow of “outboard” air driven through the heat exchanger, turning into a liquid state. The refrigerant leaving the condenser has high pressure, and its temperature is 12÷20 degrees above the environment.
- From the condenser, the heated refrigerant enters the thermostatic device. This is usually a thin copper spiral tube with the ability to adjust the cross-section for the passage of freon; the pressure drop in the thin tube with an increase in the speed of movement of the refrigerant, in strict accordance with Bernoulli’s law, causes a sharp drop in the boiling point of the liquid, which leads to the beginning of the process of active evaporation.
- Then the refrigerant enters the evaporator, where, due to sudden expansion and removal of heat from the air in the room, it is finally converted into a gaseous state. It is this stage that is key to lowering the temperature in the room.
- Next, the refrigerant in a gaseous state again enters the compressor, and the whole process is repeated cyclically.
Air conditioner prices
air conditioner
The same principle, by the way, underlies the design of refrigerators.
Find out how by studying step by step instructions, in a special article on our portal.
Evaporative air conditioner
An evaporative air conditioner is quite simple design, based on the direct evaporation of ordinary water, that is, its operation does not use special refrigerants (freons), which often pose a danger to the environment.
The main components of this class of devices are:
- The housing, which houses all the components, with a tray (item 4), is made of materials that are resistant to moisture and significant temperature changes.
- A water pump equipped with a filling container (item 1) and water supply valves. Designed to saturate the cooling filter with water. Water is taken from the tank, where it is pumped from the pan. There is a drain valve that is used to regularly remove contaminated water from the sump.
- Evaporative filters or gaskets (item 2) are designed to evaporate the water entering them as efficiently as possible. They are most often made from cellulose, although the use of special polymers is also practiced. Most often they have a honeycomb structure - this promotes maximum contact between the humid environment and the pumped air.
- The fan provides intake and forced movement of the required volume of air through evaporative filters.
Even from the name of this scheme it becomes clear that it works due to evaporation, and water is used as a liquid that turns into a vapor state. It is interesting that such devices have, one can safely say, a very ancient origin. This is exactly how indoor cooling was organized several thousand years ago in Persia and Mesopotamia, where such “air conditioners” were called “wind catchers.”
The principle is known to everyone - the evaporation of water always leads to cooling of the surface. A simple experiment: wet one hand and leave the other dry - the difference is obvious. By the way, clever nature has provided each of us with our own “cooling system” - it is the secretion and evaporation of sweat that saves the human body from external overheating.
When the evaporative air conditioner is operating, the outdoor warm air is drawn in by a fan and passes through filters that are constantly saturated with water from the container. Due to the evaporation of water, the air flow is cooled, humidified and passes into the room. It is characteristic that the lower the humidity of the outside air, the more intense the evaporation of water from the filters, and accordingly, the more efficiently the air conditioner functions. Unlike compression air conditioners, the air in the room is always pumped in from outside, that is, it needs filtration (that’s why evaporative filters are used). In addition, this makes it necessary to ensure exhaust flow from the premises.
This type of air conditioner has a much simpler design, is much more economical in operation compared to a compression design in terms of energy consumption, with equal cooling power.
A significant disadvantage of such devices is that they show extremely low operating efficiency in humid climates. In addition, costs include the need to constantly replenish water or supply it.
So, in order to manufacture an air conditioner based on the compression principle of operation, you will need to make significant investments, and its assembly requires some knowledge and skills. At the same time, do current model evaporative air conditioner – it will not be difficult even for a schoolchild.
Advantages and disadvantages of ready-made air conditioners
Air conditioners are installed everywhere these days, since in the summer, when the temperature outside rises to 35÷40 degrees, and sometimes even higher, it is quite difficult to do without additional cooling equipment in the premises. Any of the air conditioners has numerous advantages that any manufacturer cites and, in principle, does not deceive the consumer. However, not everyone knows that, in addition to its advantages, each such device has plenty of disadvantages, some of which are extremely dangerous for the health of people in the air-conditioned room. But in order to compare the advantages and disadvantages of devices, you first need to know them.
The well-known “advantages” of air conditioners include their following characteristics:
- The main advantage of these devices is the creation of a comfortable microclimate in a house or apartment in summer period or all year round.
- The air conditioner is capable of filtering air masses passing through it indoors. In some models, in addition to filters, ionizers and humidifiers are installed, which significantly improve the air quality in rooms.
TO negative points The presence of air conditioning in the house can be attributed to the following:
- Air conditioners consume a large number of electricity, so bills for it will increase significantly. In addition, these devices require professional, regular maintenance, and you will also have to pay for these services.
- The biggest disadvantage of air conditioners is that they collect dust from the air, with all its accompanying components, and accumulate it on their filters. As a result, a favorable microclimate is created in the filters for the proliferation of dangerous microorganisms. One such characteristic bacteria is Legionella, which causes a very serious lung disease, Legionellosis.
- Air conditioning requires special means - this is usually done once every three months. If this procedure is not carried out on time, the device will become a breeding ground for dirt and an unpleasant odor that will remain in the room.
- If you use an air conditioner without a humidifier, the air in the room will very quickly become dry - relative humidity will be only 30÷40%, when comfortable air for a person should be humidified to 45÷60%. Dry air makes breathing difficult, leads to damage to the mucous membranes of the eyes and nasopharynx, as well as aging of the skin.
- The use of air conditioners often causes a surge in colds during the seemingly “harmless” summer period, especially in children or adults with a predisposition to this.
- When operating, the air conditioner makes constant noise, which negatively affects the psyche of some people.
- Finally, although prices are no longer what they were, say, ten years ago, not everyone still has the opportunity to purchase and install such a device in their apartment or house.
Unlike a factory-made device, a homemade version does not require large expenses or special conditions. It is easy to operate and maintain, so this can be easily handled without the involvement of specialists.
DIY air conditioners
It might be worth starting with the most simple ways cool the room. They are well known and have been used since ancient times - for example, a wet sheet used to cover an open window, or a container filled with water and wrapped in a wet terry towel, the end of which is dipped in water. This “cooling system” is installed on a windowsill with open window or in the doorway facing the street. The role of the fan in this case will be played by a banal draft. Everything is the same as discussed above - when the water evaporates, the fabric cools, and the desired coolness enters the room.
Most mini-air conditioners operate on the same principle, which can be made quite easily yourself.
Next, we will consider several options for devices that can be made at home without much difficulty and great expense. Of course, the created models will not be able to compete in terms of cooling power with factory-produced air conditioners, but they will not cause as many problems. In addition, energy costs will be several times less than when operating real devices.
Advantage homemade device cooling also lies in the fact that if the design seems ineffective, it can easily be disassembled and put, so to speak, in a box. Due to the fact that everything necessary for the manufacture of devices is inexpensive, you will not be offended by the money spent. But how much pleasure the master will receive if he is satisfied with his “creation”!
The first option is a mini-air conditioner made of a fan and a copper tube
It is not difficult to make such a compact air cooler, but it is necessary to take into account that for it efficient work you need running water or a bucket filled with it, which will have to be carried after the device if it is decided to move it to another room. If a water meter is installed in a house or apartment, then it is better, of course, to choose the second version, with water recycling.
Fan prices
fan
To make the air conditioner shown you will need:
- Fan of any model with a front protective grille.
- Copper tube 1/4˝ or 6.35 mm. Its length will depend on the diameter of the fan grille and the density of the spiral. A standard floor fan will require approximately 5000÷10000 mm of tube.
- Plastic clamps or thin wire.
- Transparent flexible plastic tube with internal diameter at 6 mm.
- Submersible pump for an aquarium with a capacity of 600÷1000 l/h.
- A thermal box, such as a cooler bag or a plastic bucket. It should be noted here that ice will melt in a thermal box much longer than in a bucket, so it is preferable to the latter.
- Metal clamps.
- Cold accumulator.
We need to talk about the cold accumulator in more detail, since it is useful not only for this, but also for other models of homemade mini-air conditioners.
Prices for copper tubes
copper tubes
Cold accumulators are used in car or portable cooler bags to maintain required temperature. This convenient device is a hermetically sealed plastic container with flat shape. The battery capacity is filled with quickly freezing liquid, and before placing it in an insulated bag or plastic box, he is frozen in freezer refrigerator.
The cold accumulator can be used an unlimited number of times, and it can not only cool inner space refrigerator box, but also to keep it cold. You can find three types of batteries on sale, which differ in the filling material. Thus, the container can be filled with a water-salt solution, gel or silicone.
- The water-salt battery maintains the temperature in the refrigerator box in the range from -20 to +8 degrees.
- The gel version of the cooler is capable of maintaining both positive and negative temperatures at the desired level.
- The silicone battery is sold in a durable plastic film bag - this option can maintain a temperature from 0 to +2 degrees for seven days, provided that the refrigerator is not opened.
Therefore, to cool the water entering the air conditioner, it is more advisable to purchase a silicone battery. But for it to work effectively, we repeat, it requires a tightly closing box with effective thermal insulation. If there is no such thing on the farm, then you can choose a closing container (for example, there are buckets with rectangular cross-section) and cover all its surfaces (including the lid) from the inside or outside with a layer of polystyrene foam 30÷40 mm thick.
Having prepared everything you need for work, you can proceed to making a mini-air conditioner:
| Illustration | |
|---|---|
 | The first step is to remove the front protective grille from the fan. Then a copper tube is taken and, starting from the center of the grate, a spiral is twisted from the tube, as shown in the illustration. |
 | The more turns the spiral has, the faster the room will cool. However, do not forget that if you twist the spiral too tightly, it will interfere with the normal movement of air pumped by the fan. The ends of the tube are left free - they will later be placed behind the rear grille of the fan after installing and securing the front one. This design will become a heat exchanger for the air conditioner. Water, cooled in a sealed container, will circulate through the copper tube, and the fan, blowing the heat exchange circuit, will direct the flow of cool air into the room in the desired direction. |
 | The tube is secured to the front grille using plastic clamps, but if they are not available, you can use ordinary thin soft wire to secure the spiral. After the heat exchanger is completely secured to the grille, the ends of the clamps need to be cut off, since the air conditioner will not look aesthetically pleasing with them. |
 | The next step is to install the grille with a spiral onto the fan. The ends of the copper tubes are brought to one of the sides of the device or placed behind the rear grille. In any case, they should be turned in one direction, where it is more convenient to install the cooling box. |
 | Next, the ends of the transparent plastic tubes need to be connected to the ends of the copper coil. To ensure that they are tightly fixed and the connection is completely leak-proof, they are secured on top with metal clamps. |
 | After this, one of the tubes is connected to the pump nozzle. The length of both hoses must be such that they freely reach the container in which the cooler will be located. Here it is necessary to clarify that the tube can be selected according to the diameter of the pump nozzle, and if it is much larger than the size copper tube, then before putting on the transparent hose, you need to wrap electrical tape around the latter and also secure the connection with a metal clamp. |
 | After connecting all the tubes, they, together with the pump, are placed in a container. In this case, a foam box is used, but a refrigerator bag or a plastic bucket will also work, but it will need to be thoroughly thermally insulated using polystyrene foam or other insulation. To ensure that the container closes tightly, the tubes can be passed through holes drilled in the walls of the container - then the lid will be tightly closed. |
 | The thermal box is filling up cold water, and then the system is checked. To do this, you need to turn on the pump and when water starts circulating through the tubes, check the connections. The water taken by the pump must pass the entire coil and return to the container through the second transparent drain tube. |
 | If the test was successful, then add ice and cold accumulators to the container with water, and then tightly close it with a lid. Now you can turn on the fan and check the functionality of the entire assembled system as a whole. You will have to periodically add ice to the thermobox as the mini-air conditioner operates. |
The second option is a mini-air conditioner made from a table fan
To make the air conditioner more powerful and cool the entire room, you will need a fan. more power. But it is quite possible to organize local cooling of the air flow, for example, near a place for work or rest.
In this case, the master used the usual table fan, which is found in almost every home. It does not have to be disassembled to the ground, so if you want to use it traditional way, it will be enough to put it in its original position.
In addition to the fan, to create this design, you will need a cardboard box of a suitable size, wide tape, a pan or other container that will completely fit into the box, shoe threads and ice. The tools you will need to prepare are a stationery knife, scissors, a marker, a ruler or tape measure, and a large (gypsy) needle. If you look at the list of tools, a logical conclusion arises that even a woman’s hands can make such a mini-air conditioner.
| Illustration | Brief description of the operation performed |
|---|---|
 | So, any large box from corrugated cardboard, since you can easily make a small one out of it. In order to start making it, you need to prepare a suitable container. You can take any pan from the kitchen, since it can be returned at any time if necessary. There is no need to drill or saw the container - it will remain in its original form. |
 | The task of the first stage is to make a box without a bottom from corrugated cardboard, which will be 150÷200 mm higher than the container, and have dimensions in length and width that the selected container will easily fit into. To do this, the cardboard box is marked, it bottom part and the lid are cut off. This work is performed with a sharp stationery knife. |
 | Next, a box is assembled from the cut cardboard. The edges of the box are secured with high-quality tape, which is glued in two to three layers. |
 | The result should be a box approximately like the one shown in the illustration. If there are holes or windows in the walls of the box, then they need to be sealed with the same tape so that the cold that will emanate from the ice is directed in one direction and exits through one channel specially designed for this. |
 | The next step is to measure the remaining cardboard, and on one of the fragments that does not have folds, a lid is drawn and cut out, which must exactly match the previously made box. In the central part of this cardboard square, a circle is marked, which should have a diameter that exceeds the span of the existing fan impeller by 20÷25 mm. The fan blades should not only fit freely into the cut-out window, but also not touch its edges when turned on. It is best to make this cover from two layers of cardboard - it will be more reliable. |
 | The next step is to secure the prepared square lid on top of the box. The parts are connected around the entire perimeter using tape. |
 | Then, the height of the container that will be located under the box is measured. At this level it is marked and cut out rectangular hole, height 35÷40 mm. The length of the opening may be different, but it is important to deviate from the corners of the box by at least the same 35÷40 mm, thereby maintaining the rigidity of the structure. |
 | The next step is to cut out two identical parts from cardboard - strips, the length of which will be 4÷5 mm less than the rectangular cutout in the box, and the width will be 5 mm greater. The parts must be connected with threads, at a distance from each other, which should be equal to the height of the rectangular gap cut in the box. The threads need to be run at a slight angle from the top part to the bottom, i.e. secure them through top panel, departing from the edges 7÷8 mm, and on the bottom 12÷15 mm. |
 | The next step is to insert the connected parts into the cut-out rectangular window of the housing, as shown in the illustration. They must enter it freely. |
 | Next, take a gypsy needle with a thread inserted into it and the parts are loosely fixed in the window, each of them in three places. One of them is fixed to the top line, along the length of the opening, and the second - along the lower border. The threads should not be pulled tight - after threading them through the cardboard, you just need to tie knots. |
 | The result should be a structure similar to conventional blinds, which can tilt down, up, or be installed exactly horizontally, directing the air flow in the desired direction. |
 | This illustration shows how, with the movement of a finger, the curtains of the resulting blinds move upward. They will remain in this position until someone decides to change the direction of the flow. |
 | Now you can start assembling the structure. In order for the air conditioner to operate more quietly, it is recommended to place a bedding on the surface of the floor or table under the container - this can be a cloth folded in several layers or an old towel. But at the same time the pan must stand very steadily. |
 | The front mesh, removed from the fan, is placed on top of the container, with the convex side down. It will serve as a stand for pieces of ice. |
 | Now you can put ice on the grid - it should be prepared in advance. If the summer is hot and you plan to use the air conditioner every day, then ice will have to be prepared constantly. This is the only inconvenience in using this design. However, its advantage is that it will consume no more electricity than a regular fan. |
 | Now, the container with the mesh and ice is covered with a box. When the ice melts, the water will flow into the placed container, but in order for the cold to flow into the room constantly, ice will have to be constantly added. It is best to prepare the ice used for this conditioner in large pieces, freezing water, for example, in plastic glasses. In this case, it will melt more slowly than the one made in small cubes. |
 | Next, a fan is inserted into the hole in the box, with the blades down. If a tabletop device is used, as in this case, then it does not need to be removed from the stand. When used for construction, large, floor model, it would be better to remove the axis with the blades from the stand. For a larger fan diameter, you will have to make a larger box. |
 | When the entire structure is assembled, you can proceed to testing it. In this case, to visually assess the functionality of the air conditioner, the master used polyethylene tapes. |
 | To visually determine the direction of air flow, so to speak, “in real time,” several polyethylene strips can be glued to the blinds with tape. If you always use ice same size, then over time it will become clear how much one bookmark is enough. Although, the period of ice melting will also depend on the air temperature in the room. |
When using such a mini-air conditioner to cool the air, you need to periodically empty the container in which the melt water will collect, otherwise it will overflow. If the cardboard of the box gets wet, the fan may well fall into the spilled water, which will lead to short circuit. Therefore, a homemade air conditioner of this type requires constant monitoring.
The third option is a tabletop mini air conditioner
This air conditioner model is perfect for those who spend all day at the computer or just at their desk, since its range is very small. However, this device also has its advantages - it works quietly, takes up little space and consumes a minimal amount of electricity.
| Illustration | Brief description of the operation performed |
|---|---|
 | To create this model you will need a computer fan (cooler). It can be purchased at a specialized store or even simply removed from an old system unit or power supply. |
 | A mayonnaise bucket or a deep food-grade plastic container with a lid can be used as a container for ice. |
 | The container lid must be at least 5 mm larger than the fan dimensions. |
 | In addition, this mini-air conditioner model will require a 12-volt power supply. The fan will run from it. |
 | You will also need a regular 0.5 liter plastic bottle. To be more precise, only its upper part – the neck – will be used. |
 | To assemble the structure, you will also need to purchase it in a store or remove it from old technology a small switch and a socket for the power supply. |
 | When purchasing a socket, you need to ensure that it fits the plug of the power supply. It is best to buy them at the same time to avoid mistakes. |
 | A fan is applied to the lid of the container, then it is marked using a marker. First, the fan is outlined around the perimeter, and then inside the square the circle in which it will later be installed is determined. |
 | Next, it is necessary to ensure free passage of air inside the container. To do this, a large number of holes are burned in the inner part of the outlined circle using a soldering iron. |
 | But it’s better to do it even simpler - cut out the entire opening for the fan along the marked circle. This operation is easy to perform using a sharp stationery knife with replaceable blades. |
 | The cylindrical fan housing should fit into the resulting window as tightly as possible, if the existing model has one. If not, then it is necessary to ensure that the plane of the body is pressed as tightly as possible to the surface of the cover. All burrs remaining after cutting out the window must be cut off. |
 | After this, the fan is applied to the lid again, and dots are placed on the lid with a marker through the holes located in its corners. Then, mounting holes are drilled or burned along these designated centers. |
 | The fan is installed on the cover and screwed with short screws and nuts. In this case, it is necessary to orient it correctly - it should work to pump air into the container, and not vice versa. |
 | To ensure that all the air pumped by the fan enters the container and is then discharged through a channel specially designed for this, it is additionally recommended to seal this unit by gluing it with silicone around the entire perimeter using a heat gun. |
 | The next step will require wiring the switch and the socket for connecting the power supply. The red wire (plus) from the cooler is soldered to one of the switch legs. The end of the wire is first cleaned and lubricated with soldering flux, which will result in a more durable contact connection. |
 | Next, you need to take a piece of wire, strip it at the ends, and then treat them with flux. One end of the wire is soldered to the second leg of the switch. It is advisable, of course, to observe the color coding of the wires here too, using red so that it is clear that it is the “plus” that is being interrupted. However, with due care, this is not necessary. In the example shown, the master uses black, apparently whatever was on hand. |
 | The next step is to immediately attach the switch to the fan housing using silicone hot-melt adhesive. For the key you need to find a suitable place that is convenient for turning it on. |
 | Next, take the power socket. As a rule, in most models of power supplies, the central contact of the plug is “plus”. Therefore, here too, the master connected the terminal located at the end of the socket to the switch, where, as we remember, it is the “plus” that breaks. |
 | Then, take the second pre-stripped wire from the fan (“minus”) and solder it to the “minus” of the power socket. It is very important not to mix up the wires of the positive and negative contacts, otherwise the fan may fail. If you are not sure, then it is better to ring the switching before turning it on, making sure that the polarity of the wires is correct. |
 | Now it is necessary to carry out “running tests” of the assembled electromechanical part for operability. To do this, the power supply is connected to the network, and its plug is inserted into the socket. The switch key is pressed. |
 | If the tests were successful, the fan works and directs the flow exactly in the right direction (into the container), the socket is also secured with silicone hot-melt adhesive to the cooler body, next to the switch. The illustration clearly shows the location of parts and wires. |
 | As a result of assembly, the structure should look something like what is shown in this photo. |
 | When the main and, it must be said, the most difficult part of the air conditioner is done, you can move on to an easier stage - working on the container. To do this, first a plastic bottle is marked with a marker and the upper part is cut off, which will be used in the design as an outlet channel for cooled air. It is advisable to make the cut line as smooth as possible to simplify sealing of this unit. |
 | The next step is to apply the cut part of the bottle to the top of the container wall and outline it with a marker. |
 | But the hole should still be somewhat smaller. Therefore, another one is drawn inside the outlined circle, with a radius of approximately 2–3 mm less. After this, a round window is cut out along the line of the inner circle using a knife. The work must be done slowly, very carefully, since the knife can easily move to the side, and the cutout will be larger than necessary. This means that you will have to look for another container. |
 | The cut bottle neck is inserted into the cut hole on the container from the inside, and then the joint is “sealed” with silicone hot melt adhesive from the outside and inside. The sealing seam must harden well, and only after this can a control test of the structure be carried out. |
 | The cap from the neck of the bottle is removed, and polyethylene strips can be glued around the outlet hole, which will visually show the strength of the air coming out of the neck. |
 | Then the container lid with the fan attached to it is put in place, and you can check assembled structure for performance. The illustration clearly shows how strips of polyethylene visually demonstrate the force of the air flow leaving the container. |
 | Now the container capacity is filled with ice, approximately to the bottom edge of the glued bottle. The ice in the container space will cool the air, and the fan will ensure its influx and subsequent exit through the neck fixed in the wall. Instead of regular ice, you can use its dry version - by the way, it is enough for a longer period of air cooling. If the capacity allows, then in addition to ice, you can also install a cold accumulator in it. |
 | These two photographs demonstrate how, having made such a tabletop air conditioner, the master measured the temperature at the outlet before turning on the fan and after it had been running for several minutes. The thermometer shows a drop in temperature from 32 degrees to 21 - what is required. |
Significant disadvantage similar design we can assume that the cooled air will be supplied as a “jet” in only one direction. However, the device can be installed in such a way that the air flow blows on the face of its owner, and this will be enough to not suffer so much from the stuffiness in the room.
The fourth option is “conditioner” made from plastic bottles and a sheet of plywood or cardboard
This method of cooling rooms was invented in Bangladesh and is used everywhere today.
This air conditioner will require virtually no costs for its production, and during its operation - for electricity, since it works naturally. This air conditioner design does not require not only electricity, but also ice or water.
The principle is that air naturally (due to a draft) passes through a sharply narrowing channel, and then, with an instant expansion at the outlet, it cools. This principle is clearly demonstrated by a simple experiment. Blow on your hand with your mouth wide open - you will feel the warmth. And now, with the same effort, but pass the air through the lips extended in a tube - the effect of an air stream cooling the skin is obvious.
The structure can be made of any size, which will depend on the linear parameters window frame, which is planned to be opened wide.
Now we need to consider simple process the manufacture of this model of “air conditioner” in a little more detail.
- So, you need to prepare a sheet of plywood and required amount plastic bottles. They can be of any color - this factor does not matter at all for the operation of the air cooler being created. However, if you want to create a colored design, then bottles of different shades can be arranged in a certain way, creating a beautiful ornament that will be visible from afar.
- To create the conditioner, you will only need the top parts of the bottles, ⅓ of their height. Therefore, they need to be cut off and the plugs twisted off them. However, do not rush to throw away the corks, since they will serve perfectly as fasteners, like threaded bushings, for fixing bottle parts on the plywood panel.
- You need to cut so many bottles so that after placing them on a plywood sheet, they are located tightly, but do not touch each other. To mark their places on the panel, you need to take a long pencil, and, inserting it through the top into the center of the neck of each of the bottle segments, alternately mark the location of the future hole.
- To drill holes you will need a core bit. Since the diameter of the threaded part of the neck of most bottles found is standard, a drill with a diameter of 18 mm is required. It is installed in the drill chuck, and holes are drilled according to the previously made marks.
- Now all that remains is to install the bottle pieces into the holes. To keep them securely, you can secure them with lids by screwing them on from the outside, after first cutting off the top of them so that they become “passable”.
You will get a plastic ring with a thread inside. These couplings screw onto the necks of the bottles and will securely fasten them to the plywood sheet.
Plywood prices
- The finished air conditioner is installed on the window opening with the funnels facing outwards. The developers of this scheme claim that due to the fact that the warm air entering the funnel, passing through a narrow neck, is cooled, the temperature in the room is guaranteed to drop by five degrees. And this is in conditions summer heat- a lot!
True, you will have to come to terms with the fact that the window practically stops letting in daylight, which, you see, is not entirely convenient.
Fifth option - mini-air conditioner made from a fan and plastic bottles
This air conditioner model is in many ways similar to the previous one, but is reinforced with a fan, and can be installed in any room, easily moving it to the desired location. In addition, there are no problems with daylighting the room.
In order to make this version of the “air conditioner”, you will need the following materials:
- An ordinary household fan.
- Six plastic bottles.
- A sheet of thick cardboard or thin plastic.
- Plastic clamps.
- Stationery knife.
- Silicone hot glue.
The work on making this model will not take much time if everything you need is stocked in advance. When making such an air conditioner, you will not have to solder or make complex connections of individual parts - you will only need to cut and glue. A similar air cooler, equipped with a system to be manufactured, will operate on the same principle as the previous model.
- So, the first step is to cut off the bottom of all six bottles, focusing, for example, on the label - the cut line will run exactly along it.
- The next step is to prepare the base. On cardboard or plastic you need to draw a circle that will correspond to the diameter of the fan, and then carefully cut it out using a stationery knife.
- Next, the cut parts of the bottles are installed and evenly distributed on the resulting round panel, with the funnel down. Each of them needs to be circled with a pencil. Then the intended windows are carefully cut out with a knife.
- The result should be a round panel with even holes corresponding to the diameter of the bottle.
- Now, the cut parts of the bottles need to be secured to the panel holes with tape so that they do not move when they are glued. Having fixed the parts in one position, they are glued with silicone hot glue using a gun. The glue is applied around the circumference of each of the six windows on both one and the other side of the panel.
Prices for popular air conditioners
- Next, closer to the edge of the round panel between the bottles, you need to make two holes at a distance of about 30 mm from one another. Plastic clamps are inserted into the holes, with which the structure will be secured to the fan. How the tightening is threaded is clearly shown in the illustration.
- Now all that remains is to secure the panel to the front grille of the fan using clamps, the remaining free ends of which must be cut off, otherwise they may interfere with the rotation of the fan and make noise. unpleasant sound during his work.
- The result is a design as shown in the illustration. The convenience is that such an air cooler can be directed to any area of the room, moved to another room, it does not require additional consumables, and also that the panel can be easily removed if desired.
In addition, for such an “air conditioner” you will not have to buy any expensive parts, and it will consume no more electricity than a regular fan.
In conclusion, it must be added that there are other models of homemade air conditioners, which can be simple or complex. If the task is to choose the optimal one, you should start experimenting with the simplest and least expensive ones. To expand the information received, watch the video below
Video: Another model of a homemade air conditioner, easy to make