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In summer, temperatures in houses and apartments can reach 30 degrees Celsius or more. If there is an air conditioner in the room, it will reduce the air temperature to a predetermined level in a few minutes. However, not everyone has such a technique.

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Therefore, today we will look at the question of how to cool a room without air conditioning in various ways.

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Ventilate the house in a timely manner

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The lowest temperature in summer is observed from 4 to 7 am. At this time, you should “saturate” the room with fresh and cold air as much as possible. But if you don’t want to get up so early, open the windows in the evening, around 10:00-10:30 p.m.

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Ventilation of the apartment - This is one of the most effective ways to reduce room temperature. But it remains effective as long as the above action schedule is followed. Opening windows at 12 noon only makes things worse, saturating the room with hotter air.

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Regular air humidification

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How can you cool a room? Of course, the easiest way is the skillful use of water. In order to reduce the room temperature by 2-5 degrees, you should regularly humidify the air. This is done using a regular spray. You can buy special humidifiers in stores, but this is a much more expensive option.

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It is known that the heat is more noticeable if the rooms have low humidity. It’s also bad if the humidity is high. To ensure the necessary air humidity in the rooms, you can, for example, hang wet clothes or spray the curtains with water from time to time.

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In addition, you can place vessels with water throughout the rooms, to which, if desired, add aromatic oils of lavender, mint or citrus.

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The easiest method is to fill an empty container of any window cleaner with running water. It should be sprayed every hour throughout the room.. You can also spray this water on yourself. As the liquid evaporates, your skin will feel noticeably cooler.

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Foil

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How to cool a room in the heat using foil? Oddly enough, this material can also cope well with high room temperatures. Reflective foil can be purchased at any hardware store. It is better that it is in a roll of 5 or more meters.

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This foil should be applied to the inside or outside of windows and walls. For a better effect, the entire area of ​​glass and wallpaper is covered. Pay special attention to rooms whose windows face south and southwest. This is where the highest sun intensity is observed. Therefore, such rooms should definitely be covered with foil. In this case, the material will reflect heat, and the room will be cool for a long time. This cooling method is very effective, since sunlight does not penetrate carpets, furniture and other interior elements, which subsequently heat the air.

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Studies have shown that any room is heated not directly from hot air, but from objects that are hit by the sun's rays. The latter, in turn, creates heat exchange with the air, which causes suffocation in the apartment. True, walls covered with foil will not add beauty to the interior, so this method does not have many fans.

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Curtains

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To prevent the sun's rays from penetrating into the room and heating it up tightly enough close the curtains. This method is suitable for apartments with windows facing south. If the windows “look” north, then there is no need to close the curtains.

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Darkening windows

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This method is popular among owners of southern apartments. Its essence is that on glass a special protective film is applied greenish or bluish in color, which prevents sunlight from penetrating into the room. The “disadvantage” of this method is that the natural colors outside the window are lost

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Blinds

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If you don’t want to buy foil and cover your windows with it, you can simply install blinds instead of curtains. How can you cool a room this way? The operating principle of blinds is very simple. During the day, keep them closed, so that 90% of the sunlight will be retained on the thin metal plates of the device. Thanks to blinds, you will not only cool the room, but also modernize the interior design of your home. But, like curtains, they need regular care - at least a couple of times a year they need to be wiped with a means to remove dust and dirt.

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Hiding extra things

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During the heat walk on the bare cool floor- a pleasure, but the wool pile underfoot does not cause the most pleasant sensations. In addition, dust and fine dirt settle on the carpet in greater quantities in summer than at any other time of the year.

The ideal solution is to free the floor from carpet or rug right now, sending it to the cleaners. It is the main heat reflector that prevents cold from penetrating from the floor to the rest of the room. You can also remove wall hangings. By the way, if the room is too humid, mold or mildew can form underneath. Therefore, before re-hanging the carpet on the wall, treat the surface with a special antifungal agent.

Trinkets dear to the heart - photo frames, figurines and travel souvenirs- in the heat they also turn into peculiar dust collectors. Remove them temporarily from all horizontal surfaces in special organizer boxes. This way you will reduce the percentage of dust that settles, and therefore it will become easier to breathe.

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How to cool a room in the heat with ice?

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Using ice, similar to sprinkling water, can reduce the room temperature by several degrees Celsius. Enough for this Freeze a few ice cubes in the refrigerator and then throw them into a bowl. Gradually they will melt and cool the air temperature.

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Kitchen usage schedule

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On hot summer days Try to use the gas stove and oven to a minimum. This significantly increases the air temperature, after which it is simply impossible to stay in the kitchen. Gradually, all the hot air spreads around the entire perimeter of the house, which is extremely undesirable for those who prefer coolness.

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About wet cleaning

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During the hot season It is advisable to carry out wet cleaning in rooms as often as possible. It is necessary to regularly wash the floors, wipe the windows, shelves and doors. All this will slightly increase the humidity in the room, as well as get rid of dust, which in turn will make it easier to breathe. Thanks to the evaporation of water, the air temperature will gradually decrease, in addition, the room will be sufficiently saturated with moisture, which is sorely lacking on summer days.

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Electronic devices

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It is not recommended to use electrical appliances during the day that significantly heat the apartment. These are vacuum cleaners, irons, personal computers, printers and televisions. Pay special attention to the last element. If you're not watching TV, turn it off because, in addition to rising temperatures, your electricity bills will also rise. If you have an electric heated towel rail, cover it with foil or only use it as a last resort. Such equipment always heats the air in any room.

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Wet sheet

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There is another interesting tip on how to cool a room in the heat without air conditioning. It consists of using several bowls (basins) with water and a sheet. How to cool a room in hot weather using these elements? Everything is very simple. The basin should be placed near the door, and the sheet should be hung on the door so that its ends come into contact with water. The fabric gradually absorbs water, thereby cooling the entire room. It is important that the area of ​​the sheet lying is as large as possible. Remember, the wider and longer it is, the faster evaporation and heat exchange occurs.

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Making an air conditioner out of a fan

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How to use a fan to cool a room? It is quite possible to do this. For this we need one fan and several liters of running water. Naturally, all liquid must be filled into a certain container (containers such as plastic bottles and bowls). Fill a container with water and place it in the freezer for several hours. After the liquid has turned into ice, take the container back out, then place it in front of the fan. Remember that the air flow from the blades should go exactly to this container. How can you quickly cool a room using these simple elements? As practice shows, the first result is expected after 10-15 minutes of fan operation. But to prevent the air from heating up again, as the ice melts, you should change the containers to cooler ones.

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Do not use the fan when you are not in the room. If you think that this device, based on the principle of an air conditioner, reduces the air temperature after a few minutes, you are deeply mistaken. The fan only moves air from one side to the other, while its electric motor heats up significantly. You will only get a feeling of coolness if the air flow is directed towards you, and best of all - from cooled containers, as described earlier.

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Alternative way

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Another method for cooling a room is with a fan. But here we will use an unusual device. It's called ceiling fan. We often see such devices in Venezuelan and Mexican films. However, this does not mean that it is impossible to purchase it in Russia. It costs about 3-4 thousand rubles. Such a device is absolutely silent, does not create drafts during operation and does not heat the room at all with its motor. Using such a device, it is very difficult to catch a cold. The operation of the ceiling fan does not interfere with watching TV or working on a PC. At the same time, you will quickly feel that it has become easier to breathe in the room. How to cool a room

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So, we found out how to cool a room in the heat without using expensive air conditioners.

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As you can see, it is not necessary to use expensive equipment for this - all of the above methods are very simple and effective.

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In order for the above methods to be most effective, you need to remember the following recommendations:

• prevent dehydration of the body (monitor your drinking regime, regularly drink water, you can add a mint leaf to it);
• take a cool bath or shower several times a day;
• you can keep your feet in a basin of cold water;
• go to bed on the floor, because the lower the air, the cooler it is;
• use bed linen made of satin or calico;
• wear light clothes.

Unfortunately, ideal weather does not exist. Therefore, you need to be able to adapt to any temperature, both low and high, in order to ensure comfort, regardless of the time of year.

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And a few more tips!

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In hot weather, try to drink as much fluid as possible.

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Oddly enough, but it is hot tea that best helps the body endure the heat, since the body temperature increases slightly, plus there is the effect of sweating.

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Ice water creates a deceptive effect- in fact, it awakens a person’s thirst even more.

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Drink fluids at room temperature and eat cold foods. Among the latter are okroshka, milk, vegetables and fruits, as well as salads. In addition, your body will be saturated with enough vitamins, which will allow you to effectively fight viruses and infections in winter.

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Dry air and high temperatures negatively affect a person’s performance, mood and health. People with weakened immune systems or elderly citizens are especially sensitive to this temperature regime. An air conditioner can solve this problem, but not everyone can afford it due to the high price. You can get rid of the heat in other available ways; how to cool a room without air conditioning will be discussed below.

An air conditioner is capable of lowering the air temperature with the help of the physical processes that take place in it and it will not be possible to completely imitate it at home. All of the methods listed below will help achieve only a short-term effect, so that you can endure the heat more comfortably.

Airing the room

Most people make the same mistake during hot weather; they open all the windows wide open. This is highly discouraged, especially if the outside temperature is above +35 ºС. Even if there is no air conditioning in the house, the microclimatic conditions in it will be much more comfortable than outside. If you open the windows during the summer heat, the temperature in the room will be the same as outside, and a person’s well-being may worsen.

The same applies to windows that are located in the shade. Sometimes people try to keep their house cool by keeping all the windows closed on the sunny side and open in the shade. In fact, the desired effect cannot be achieved in this way, since in this case there will be an exchange of air and it does not matter whether it enters the home from the sunny or shady side.

It is best to avoid ventilation during hot periods, as this will prevent the appearance of stuffiness, while at the same time cold air will not be able to escape into the street. It is recommended to ventilate at night or early in the morning; at 9:00 it becomes hot.

Remove direct sunlight

To create a comfortable microclimate, you should remember that more than half of the heat enters the room due to direct sunlight. Therefore, to achieve the desired effect, it is recommended to curtain all windows or lower the blinds if possible. The denser the curtain material, the higher the likelihood that excessively high temperatures will not appear in the apartment. Of course, a dark room sometimes makes you feel depressing and it’s nice to enjoy bright sunlight, but in this case you have to choose between comfort and personal preference.

If the curtains on the windows are transparent and they still let light through, then you can use foil or a special reflective film. They are glued to the windows, thus protecting the room from direct light. You can also cope with ultraviolet radiation by gluing light filters. Energy-efficient windows can also replace air conditioning; they have a polarized coating, so they provide warmth in winter and coolness in summer. This option is suitable for those who decide to make a major renovation or simply replace window structures.

Regulating humidity

Air humidity is also an important factor when assessing the microclimate in the house. Hot, dry air can cause dizziness, nausea and fever, so it is recommended to install a humidifier in the room. It will not fully replace air conditioning, but it will make you feel much more comfortable. It can also be used in the cold season, since running batteries and other heating elements also affect air humidity. A household humidifier must be purchased if there are children in the house.

Allergy sufferers and asthmatics will also benefit from humid air, as it nails all dust particles to the floor. Against this background, exacerbation of the disease can be avoided. Another suitable device for this purpose is an air washer; this device performs the following functions:

• moisturizes any room;
• cleans the air of dust, all kinds of viruses and fungi;
• ionizes air;
• can fill a room with any chosen aroma.

When purchasing any of the listed devices, you still need to regularly carry out wet cleaning, wash the floors and care for the furniture.

Heating household appliances

To feel comfortable at home, you need to turn off, if possible, all appliances that produce heat. Otherwise, in addition to the natural high air temperature in the home, additional heating will occur. You need to turn off not only the batteries, but also the heated towel rails. They can be powered by electricity or hot water. Each thermal or heating device can produce up to 400 W of heat, this amount is enough to heat a small bath, so it is best to avoid them during hot weather.

Electrical appliances can also generate heat, although in fairly small quantities. Therefore, it is recommended to replace incandescent lamps with energy-saving ones. Such a change will entail significant changes, since just 5 such lamps can be comparable to the heat production of one small radiator. Incandescent light bulbs not only cause discomfort in the heat, but also consume a lot of electricity, so replacing them would be a great solution.

Hot air travels through the house much faster than cold air. Therefore, when cooking food for a long time, it is better to close the door to the kitchen. If there is such an opportunity, then during periods of abnormally high temperatures you can not use a stove or kettle; it is best to cook food in the microwave.

Basic misconceptions

In the summer, many people try to cool the apartment with a fan, but on the contrary, it only heats the air. They use it to make the house cool and comfortable. This feeling is created due to constant air ventilation. During this process, the sweat glands, which are located in the human body, begin to secrete fluid onto the surface of the skin. Due to ventilation, it evaporates and the person feels cool.

A fan cannot cool the air in an apartment, but if you place it near your workplace or bed, it will be much easier to endure the hot period. The maximum effect can be achieved if you place this device in an apartment near a window or door. This method will be especially relevant for those whose house is located on the sunny side, since hot air will move from the apartment to the street.

It is also necessary to use a humidifier and other methods within reason. Sometimes, for this purpose, people hang a lot of wet towels around the house and wet the curtains. Each curtain can hold about 5 liters of water; if exposed to direct sunlight, it will dry out very quickly. In this case, the air humidity will be very high and a microclimate will appear that will feel very much like the tropics. As a result of such actions, breathing may become difficult and profuse sweating may occur, which will evaporate very slowly due to high humidity.

To make it easier to cope with the heat, it is also recommended to remove everything unnecessary from the house, for example, get rid of carpets. It is much more pleasant and comfortable to walk on linoleum or parquet flooring in the summer. You can moderately humidify the air using a fan, if you attach wet wipes to it or put frozen bottled water in front of it, this will also create a cooling effect.

As weather forecasters note, during the summer the unbearable heat usually lasts no more than a month. You can survive this period using the methods listed above; to achieve maximum comfort, you will need to purchase an air conditioner.

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During hot periods of the year it is very difficult to find a way to hide from the obsessive heat. Unfortunately, not all apartments are well ventilated, and split systems are not installed everywhere. That is why the question of how to cool a room without air conditioning is becoming increasingly relevant every day.

If such a vital device is missing in your apartment, house or office, there are several dozen ways to achieve the long-awaited coolness in a different way.

Method 1

One of the most effective and proven methods is water. This liquid will not only lead to cooling, but will also send the necessary amount of electrolytes into the body, and will also help ensure that minerals that are important for the functioning of the body are not removed from it through sweating. Don't be under the illusion that ice will help cool a room in hot weather faster than water. This is wrong. It will complicate the body’s work, disrupting the established temperature balance - accordingly, its use will not lead to any positive result.

Method 2

The only acceptable way to use ice for cooling is to wrap a small cube of it in a towel and apply it to the wrist area. This can significantly reduce the thermal characteristics of the human body for 60 minutes.

Method 3

Another option to avoid temperature stress is to reduce the intensity of movement. In the heat, inactive pastime will help cool the air in the room.

Method 4

A great way to refresh yourself is mint. Suitable cubes for wiping your face, as well as tea.

Method 5

An effective cooling technique that all athletes use is to soak a towel in cold water and place it on the back of the neck for a few minutes.

Method 6

Sometimes ventilation for cooling a room consists only of opening a window to the street and letting in fresh and cool air from there, the movement of which will significantly reduce the thermal indicators in an apartment or office.

Method 7

1. take a cool shower;
2. rinse your hair every half hour;
3. wet your clothes and put them on yourself.

Method 8

Everyone knows that any operating household appliances emit a large amount of thermal energy - that is why, in order to minimize the temperature in the room, it is enough to turn off those that you are not currently using.

Method 9

Before going to bed, be sure to open windows and doors so that the apartment or room is ventilated. This is a kind of artificial ventilation that will help refresh your living or work space and prevent excessive accumulation of excessively warm air masses in it.

Method 10

Another answer to the pressing question of how to cool a room without an air conditioner is to make one yourself. For this purpose, it is enough to place a small plastic bottle filled with cold water in front of a household fan, after which the targeted air flow blown out by the device will become much cooler.

General wishes

Effective, proven products for air conditioning

Sometimes the solution to a problem “lies on the surface,” but people’s desire to find something new and creative does not allow them to notice in time the simplest method of solving the situation. Therefore, we will consider several obvious ways that can easily help cool a server room without air conditioning. These include the following mechanisms:

Simple physics

The simplest way is to organize a simple draft. So, by opening windows opposite each other, you can create a powerful flow of air, the movement of which will lead to the fact that the room will become significantly cooler. If all the windows are located on one side, then a household device such as a fan will help. Depending on how low you set it, the faster the cool lower layers of air will rise upward. If you place large containers filled with cool water or ice cubes in front of the device, the cooling effect will be much more significant.

A completely applicable method to freshen the air is to cover all windows and doors with cool, wet sheets. As the water evaporates, it produces a cooling effect on the room. It is important to remember that excessive humidity will give a different result - thermal indicators will increase.

There is another option from the “school physics” category: it is worth placing two ventilation devices so that the blades of one extend outside the apartment, and the other is located inside. Thus, it is possible to create an additional artificial ventilation system with a significant air flow rate.

Conclusion

In the modern world, not a single person can imagine how one can survive the hot period of the year without air conditioning. Excessive thermal characteristics negatively affect performance, affect health and well-being, and affect metabolism. All this significantly complicates our lives.

Unfortunately, the installation of household air conditioners, for one reason or another, is not yet available to everyone. That is why we have to look for acceptable alternative options for how to cool any room without using this device. There are quite a few such methods - from the usual fan in combination with wet sheets and bottles, as well as ice cubes, to artificial air conditioning by taking air from the basement.

At the same time, experts strongly recommend showing reduced physical activity during hot periods of the year, as well as eating light foods - preferably fiber and a little animal protein. All these methods will help you survive the hot period of the year, which is difficult in terms of health and general well-being.

If you do not yet have the opportunity to install a domestic home air conditioner, do not despair: there are always many available options for replacing it with something to cool the room.

Cooling the air in the summer is one of the top priorities for homeowners. This article will tell you how to use the energy around us for this purpose and make air conditioning practically free.

The importance of ventilation cannot be overestimated. We will not repeat what has been described many times and will focus on our own task - to cool and refresh the air in the house. Traditional ventilation systems can be quite expensive to install due to the cost of components and assemblies, as well as the cost of qualified installation work.

During operation, they consume a significant amount of electricity, especially for cooling the air mass, emit a lot of heat and create noise. The system described in this article is easy to install, energy efficient, does not require special skills and is intuitive. It’s worth noting right away that due to its simplicity, it has limited functions, but it provides for modernization in any area at any convenient time.

In our case, the term “recovery” is a synonym for the word “heat exchange”, therefore the concepts “recuperator” and “heat exchanger” are interchangeable. At the physical level, the process consists of cooling/heating air, changing its temperature due to the consumption of thermal energy, and then mixing. How and why this happens, we will look further.

Stable Energy Source

Pursuing the goal of lowering the indoor temperature in the summer, it is reasonable to ask the question: “Where should the energy of the heated atmospheric air be given? How to cool it? Here the forces of nature come to our aid. The fact that at a certain depth the soil temperature is constant will be our main argument when justifying the energy efficiency of the system.

The soil is capable of endlessly exchanging energy - cooling and heating any medium (air, water), but only to its own temperature at a given depth, which remains constant due to the relative stability of the earth's core.

International practice

Of course, we are far from the first who decided to use the endless and free energy of the Earth. In European countries, which are usually called developed (Germany, Sweden, Belgium, etc.), they have been using this energy since the beginning of the last century. The successes achieved in this field are impressive.

Heat exchange systems for water below ground level are called “heat pumps.” These underground and underwater devices heat and cool the entire home. Standard projects have been developed for any building and it is possible to convert the house from a traditional (gas, electric) air conditioning system to heat pumps. In a similar, but more primitive way, this energy is used in our country by arranging underground food storage facilities (cellars).

What is good about a natural heat exchanger?

The operation of our recuperator is based on the same physical process as in heat pumps. Focusing on savings, we use this principle, adapting it to our own needs and local realities.

Problems that an adapted autonomous recuperator can solve:

1. Constant natural ventilation with doors and windows closed.
2. Quickly replace indoor air with fresh air.
3. Cooling the air in the room.
4. Preparing the air mixture for subsequent actions.

Advantages:

1. Absolutely environmentally friendly. During installation and operation of the basic system, no toxic materials are used and no thermal emissions occur into the atmosphere.
2. Safety. The recuperator does not use electric motors (with a power of more than 100 W), chemical agents, or high voltage.
3. Simplicity and cheapness. For forced ventilation, only low-power 100 W fans are used. Ventilation occurs naturally.
4. Oxygen is not burned during operation.
5. Low noise level.

Flaws:

• the basic system does not provide for filtration, humidity control, heating or other processing of the air mixture (but allows for the possibility of installing appropriate equipment later).

Simple and clear system

An autonomous heat exchanger for a country house is a system of ventilation ducts, partially laid underground, included in the supply and exhaust ventilation circuit. In order to create such an “air conditioner”, it is not necessary to understand the intricacies of physical phenomena. Just knowing that it works is enough. You can verify this by going down into any basement, well or subway in the heat.

The operating principle is as follows:

1. Atmospheric air passes through pipes laid in the ground at a constant temperature (usually from +4 to +10 ° C).
2. In the underground part, the cool soil absorbs the thermal energy of the heated air.
3. Cooled air is delivered through ventilation ducts to the premises of the house.
4. At the same time, the exhaust fan removes the saturated and heated air mixture (“old air”) from the room.

According to the principle of construction, such systems are divided into two main types: pipe and bunker.

Pipe - consists entirely of pipes. The design can be varied depending on the conditions of the site. Suitable for reconstruction of a house without a spacious basement, but a lot of excavation work will be required.

Bunker or stone - the heat exchanger is a bunker filled with large stones. It takes up less space than a pipe one (you can install it in the basement of the house). Requires a basement or underground space. The best option for new construction.

We create an internal system of ventilation ducts at home

In both cases, the ventilation ducts inside the house will be located approximately the same. Let's start with them.

A primitive supply and exhaust ventilation system consists of external and internal ventilation ducts connected into one network. Air outlets are located in the upper diagonally opposite corners of the rooms. In one there is an inflow, in the other there is an exhaust. In a one-story building, the main air ducts may be located in the attic. In a two-story building, the supply and exhaust air ducts of the first floor will run in boxes inscribed in the interior decoration, while the second floor will run through the attic. The location of the main air ducts should be determined for each house individually, taking into account the layout (location of walls and partitions).

Advice. Rooms in which supply and exhaust ventilation are recommended: living room, bedroom, children's room, kitchen, dining room, offices, pantry, recreation rooms, gym. In bathrooms and toilets there is only an exhaust fan. Not needed at all in corridors, vestibules, halls and loggias.

Rules for calculating the internal ventilation duct system:

1. Sewer pipe with a diameter of 250 mm for the distribution inlet and combined outlet channels. Approximate consumption - two lengths of the house + height of the upper ceiling + 20%.
2. Sewer pipe (gray) with a diameter of 150 mm. Approximate consumption is three times the length of the house + 20%. For a two-story house with equal floor area + 50%.
3. Pipe fasteners (based on the wall material) at the rate of 1 pc. by 70 cm.
4. Insulation (rolled mineral wool) - 1 roll.
5. Foam, sealant, decorative grilles.
6. Elbows, revisions, couplings (1 piece per 70 cm).

Attention! Do not use 90° elbows, this will impede the passage of air and create noise. Combine 45° elbows (following the sewer example).

If it is planned to install a pipe heat exchanger in a one-story building, the supply channel will exit from underground into a heat-insulated box outside the building and enter the attic. In a two-story building, it is better to bring it into the building at the bottom of the first floor and install an internal vertical (distribution) channel, which will then be led into the attic space.

When installing a bunker option in the basement of a building, the vertical distribution channel will exit from the bunker directly into the room. It can also be mounted outside.

An example of calculating the consumption of materials for installing internal channels at home

Let's take as an example a one-story house with a calculated ventilated area of ​​60 m2, which will have approximately 100 m2 of total area and approximate dimensions of 8x12 m:

1. Pipe 250 mm: 2 x 12 + 3 + 20% = 32 m.
2. Pipe 150 mm: 3 x 12 + 20% = 43 m.
3. Fasteners: 32 + 43 / 0.7 = 107 pcs.
4. Elbows, revisions, couplings - take as 1 piece per 3 m: 32 + 43 / 3 = 55/3 = 20 pcs.
5. Grids: 8 pcs. (2 for each room).
6. Switches: 4 pcs.
7. Foam, sealant.

Name	Unit change	Qty	Price	Total, rub.
Pipe 250 mm	linear m	32	200	6400
Pipe 150 mm	linear m	43	150	6450
Elbows, revisions, couplings	PC.	20	40	800
Fasteners	PC.	100	30	3000
Lattice decor	PC.	4	100	400
Switches 2-cl.	PC.	4	120	500
Insulation	pack	1	1000	1000
Foam, sealant, etc.				1000
Total material				19550
Job				5000
Total material and work				24550

Tube heat exchanger

In order not to complicate the calculations with mathematical calculations, we will provide data from tests already carried out in average form, or rather their results.

The basic principle that must be observed when creating a pipe system is that there must be at least one underground channel pipe per room. This will facilitate the operation of the fans due to atmospheric pressure. Now all that remains is to place the required number of pipes in the underground part of the site. They can be laid separately or combined into a common channel (250 mm).

In this description, we propose to take into account not the maximum load, when all rooms are forcedly ventilated at the same time, but the average load, which will be supplied during regular periodic ventilation of different rooms (as happens in real life). This means that there is no need to output a separate channel for each room. It is enough to connect 150 mm air ducts from each room to one common 250 mm channel. The number of common channels is taken at the rate of one channel per 60 m2.

Creating a recuperation field

Diagram of the tube recuperator: 1 - fan; 2 — channel in a trench ∅250 mm; 3 — rows of pipes ∅250 mm; 4 - recovery field.

First you need to select the location of the pipes (recovery field). The greater the length of the laid pipes, the more effective the air cooling will be. It should be noted that after the work is completed, this area can be used for planting, landscaping or a children's playground. Under no circumstances should you plant trees on the recuperation field:

1. We excavate the soil to a freezing depth of plus 0.4 m.
2. We lay 250 mm pipes with a pitch of at least 700 mm along the axis.
3. We bring the air intakes to a height of 1 m. It is advisable that they be located in a shaded but well-ventilated place.
4. Using elbows and adapters, we combine them into a common 250 mm channel, which connects to the house ventilation system (see above).

Attention! In the underground part, use special ground sewer pipes with a thick wall. They do not need to be thermally insulated, but simply covered with soil and spilled with water. Only concreting is allowed if necessary.

Calculation of the amount of work and material consumption:

1. For a recuperation field we take an area measuring 15x6 m with an area of ​​90 m2.
2. The volume of excavation soil at a freezing depth of 0.8 m will be: V cat = (0.8 + 0.4) x 60 = 72 m 3.
3. Volume of a trench 40 cm wide (10 m from the house): Vtr = 1.2 x 0.4 x 10 = 4.8 m3.
4. Total volume of earthworks: V total = V cat + V tr = 72 + 4.8 = 77 m 3.
5. 15 m sections: N neg = a / 0.7 = 6 / 0.7 = 9 pcs., where a is the field width.
6. Total pipe length: L = N negative x 15 + 10 = 9 x 15 + 10 = 145 linear. m.
7. We accept the consumption of elbows, couplings, adapters 2 pcs. x 15 m = 30 pcs.

Advice. The deeper the heat exchanger is installed, the more efficient its operation will be. More than one tier is allowed.

Name	Unit change	Qty	Price	Total, rub.
Sewer pipe 250 mm ground	linear m	150	250	37500
Elbows, couplings, adapters	PC.	30	50	15000
Excavation:
soil development	cube m	77	300	23000
backfilling	cube m	70	150	10500
Pipe installation work				3000
Total material				52500
Total work				36500
Total work and material				89000
Cost of 1 sq. m	89000 / 60			1500

Bunker heat exchanger

If the house has unoccupied basements, they can also be used to create a bunker (air or heat exchange tank) for a stone heat exchanger. Its action is based on the energy intensity of the stone - it gradually increases the ambient temperature and balances the flow of passing air. If there is no free space in the basement, the bunker can be arranged in an area outside the house.

Schematic diagram of the bunker heat exchanger: 1 - fan; 2 — pipe Ø250 mm; 3 - protection; 4 — stone Ø200-450 mm; 5 - brick walls; 6 - cover

At a certain place, a pit measuring approximately 2x3x3 m is dug. A trench is made from the exit point of the common channel of the house ventilation system to the pit of the future tank, and a 250 mm pipe is laid into it to a depth of 140 cm, through which cooled air will be discharged from the bunker. Along the wall to which the trench approached, a vertical groove is laid to the bottom for a pipe with a diameter of 250 mm. Then the bottom is laid out with bricks or concreted. The bottom of the air tank must be at least 1 meter deeper than the soil freezing level.

Attention! After installing the bottom of the bunker, a 250 mm outlet pipe should be laid.

The beginning of the outlet pipe protrudes from the wall 1/3 of the distance to the opposite wall and is lined with brick protection. A protective grill is installed at the inlet opening.

Filling the tank

It is better to lay the walls out of brick or cast them from concrete (without slag!), since these materials conduct temperature better than others. Cinder block is not suitable due to its thermal insulation properties. The walls and bottom must be carefully waterproofed (roofing felt) on the outside and plastered on the inside to prevent the penetration of organic matter or moisture. The height of the walls is up to ground level minus 20 cm. An inlet hole is made at the top of any wall and air intake pipes are installed. To facilitate the operation of fans, we recommend installing 3 pcs.

After the solution has hardened, the bunker must be filled with large pebbles. Sizes from 200 to 450 mm in diameter. The stone must be clean of organic matter and washed.

The tank is covered with a “lid” made of solid plank flooring on wooden beams and covered with waterproofing materials. Turf is laid on top. Then the outlet pipe is connected to the house ventilation system (to the common ventilation duct) and backfilling is performed.

Calculation of the volume of work and consumption of materials:

1. With an air tank size of 2x3 m and a depth of 3 m, the volume of soil (excavation and stone for filling) will be: V = 2x3x3 = 18 m 3 + V tr = 22.8 m 3.
2. Volume of brickwork: V treasure = S walls + S bottom x 0.125 = ((2x3) x 2 + (3x3) x 2 + 2x3) x 0.065 = 36 x 0.065 = 2.34 m3.
3. Total pipe length (10 m from the house): L = (10 + 3) + 10% = 15 m.
4. Number of elbows - 6 pcs.

Name	Unit change	Qty	Price	Total, rub.
Red solid brick	cube m	2,3	7000	16000
Pipes 250 mm	linear m	15	250	3750
Knees	PC.	6	50	300
Stone	cube m	18	1500	27000
Cement/sand/treasure. net	-	-	-	2000
Lid	-	-	-	1000
Job:
excavation	cube m	22,8	300	7000
tank masonry	cube m	2,3	1000	2300
pipe laying	linear m	15	100	1500
cover device	PC.	1	1000	1000
Total material				50000
Total work				12000
Total material and work				62000
Cost of 1 sq. m	79550 / 60			1000

The cost of stone for filling a tank may vary depending on the region of construction.

As can be seen from the calculations, the final cost of air conditioning 1 m2 differs for both options. The main factor of choice is the level of groundwater. If it is high, less than 3 m, then it will not be possible to build a bunker heat exchanger. The pipe one is suitable even with a groundwater level of 1.5 meters.

Installation of fans

The system presented here provides for the synchronous operation of two duct fans - supply and exhaust - installed in each air outlet of the room. This makes it possible to quickly deliver cool fresh air into the room and remove heated air. For effective ventilation, a fan power of 100 W each is sufficient. When choosing a fan, pay attention to the noise level when it operates.

Approximate cost of operation

If you ventilate each room three times during the day for 20 minutes, then we get 1 hour of operation of 8 0.1 kW fans. This is less than 1 kW/hour per day. Per month - 30 kW. At a price of 5 rubles/kW this will be 150 rubles/month.

The service life of recuperators and ventilation ducts at home is limited by the service life of the material. For underground elements - from 50 years, for internal - unlimited.

The system does not require maintenance (except for fans - once every 5 years).

Prospects

The described circuit can become the basis for a more complex air conditioning system. It is possible to gradually include additional elements - filters, heating and cooling elements, more powerful fans, automatic control units and others. The air mixture prepared underground has a stable temperature not only in summer, but also in winter, so it can also be used for heating.

Vitaly Dolbinov, rmnt.ru

Summer heat and elevated temperatures can reduce our productivity, affect our mood and have a detrimental effect on health, especially for older people. There are ways to cool an apartment in hot weather without using air conditioning. They will help solve the problem of heat without large financial costs, or at least reduce its negative impact, increase comfort, and therefore improve your mood.

To be fair, it is worth noting that the air conditioner does reduce the air temperature due to a special physical process and expensive equipment; the methods listed below will only temporarily, to one degree or another, help combat the unbearable heat.

Window

It is worth remembering that opening all the windows in the apartment in the heat, especially at temperatures above +35 ºС, is not the most correct option. Firstly, even in the absence of air conditioning, the premises usually remain more comfortable. It is logical to assume that by opening the windows, you will simply “let in” the summer heat, and you will suffer from the heat even more. Some resort to cunning and try to tightly close the windows on the sunny side and open them in the shade. This method cannot be called effective, because with active air exchange it does not matter at all whether the window is in the shade or not - the temperature will be the same.

The best option would be minimal ventilation, which will relieve you of stuffiness, but will not allow coolness to escape from the apartment through the windows. It is better to fully ventilate the apartment at night, in cloudy or cool weather. It is optimal to do this from 10 pm, and you should stop airing with the first signs of heat (usually 8-9 am).

If you're struggling with the heat and are looking for ways to cool your apartment and do it effectively, pay attention to your windows. 90% of the heat enters the apartment precisely due to direct exposure to sunlight. First of all, curtain all the windows and close the blinds. Thick curtains are a guarantee of protection from ultraviolet radiation and an increase in room temperature to such a level that it becomes unbearable. Of course, not everyone will like this atmosphere, but it’s worth making a decision - a sunny room or coolness and comfort.

Pasting with reflective film also remains a popular method now. A slightly more advanced option is to stick on light filters that prevent ultraviolet radiation from entering the room. By the way, if you are thinking about the question of how to cool an apartment during the renovation or construction stage, and there is no way to install an air conditioner, install special energy-efficient windows with a polarized coating applied. They guarantee warmth and comfort in winter, and coolness and freedom from the summer heat in summer.

Moisture

Moist air can reduce the effect of heat in an apartment. Stuffiness, dry air combined with elevated temperatures can greatly ruin the life of even a lover of hot climates. An installed household air humidifier, of course, will not replace an air conditioner, but it will make your apartment a pleasant place to spend time. In general, this device is quite universal, since it solves the problem with indoor humidity in winter, and with temperature in summer. A humidifier is especially important if you have small children.

Even if you are very meticulous and thoroughly wet cleaning, in the summer, especially in the heat, dust particles easily rise from the floor and move from shelves and hard-to-reach places. It is for this reason that many allergy sufferers and asthmatics experience an exacerbation during this period. Humid air can reduce the impact of dust.

Modern developments make it possible to use such a device in the home as an air washer. This device performs several functions at once:

1. Humidification – the ultrasonic membrane is intensively capable of moisturizing a fairly large internal volume. You just have to remember that the device works effectively only in the room where humidification is needed.
2. Cleaning the air from dust, fungal spores, viruses - in the summer heat, dust rises from the floor and moves to the middle layers of the room volume, and is suspended. Air washing will allow a large volume of air to pass through a mechanical and water filter to remove contaminants.

Even if you have such a device, you need to wash the floors more often, wet-clean surfaces, and wipe down furniture and shelves.

Additional heat sources

Despite the hot season, we cannot always refuse to use devices that produce heat. This means that in addition to the natural elevated temperature, additional heating occurs inside the room.

Turn off heated towel rails if they are connected to hot water or electric ones if there are no thermostats. Such a heating device, firstly, is not needed, and secondly, it is capable of generating a fairly large amount of heat, equal to 100-400 W. In winter, this is enough to heat a small bathroom, but why is it warm in summer?

It is worth remembering that every electrical device, to one degree or another, produces heat. If you have regular incandescent lamps installed, add up their number and calculate the power. More than 5 lamps can produce thermal energy comparable to a small radiator. Not only does this lead to increased energy consumption, but it also causes additional discomfort in the summer.

Hot air spreads very quickly indoors. If you have to cook for a long time, close the doors tightly and open the windows. It would be better to reduce the use of the stove, electric kettle, and cook and heat food in the microwave.

Misconceptions

Contrary to obvious misconceptions, a fan is not capable of cooling the air; on the contrary, it heats it. Why is it used then? Just for the sake of feeling cool, creating forced ventilation in the room. Our sweat glands actively release fluid onto the surface of the skin, and it evaporates. In this case, an exothermic process occurs that cools us.

The fan is not capable of cooling, but if you install it in close proximity to the workplace, you can breathe a sigh of relief. You can use the fan effectively only by installing it in the direction of a window or front door. It must move hot air masses from the room to the street if the room is located on the sunny side and is very overheated.

Excessive humidity is also bad. Many people unknowingly hang large amounts of laundry inside the apartment and hang wet curtains. The result is a not very pleasant and comfortable climate, very similar to the tropics. Humidity plays a crucial role in summer. Firstly, curtains that are hung directly in the sun dry instantly, secondly, they can become damaged because of this, and thirdly, one curtain can contain up to 5 liters. water, which will evaporate almost instantly and saturate the internal volume. It will become difficult to breathe, you may suddenly break out in profuse sweat, which will dry out more slowly due to the saturation of moisture in the air. Not a very happy prospect, especially in the heat.

Purchasing an air conditioner

Buying an air conditioner, although expensive, is beneficial from a comfort point of view. Depending on where you live, the heat may be easy to bear or require significant effort. For example, located in close proximity to the road, an apartment on the sunny side will be very susceptible to temperature influence.

Air conditioning cooling

On average, in summer, unbearable heat can last for no more than a month. In this short period, you can get by with the above tips. If you want the maximum level of comfort, you will have to fork out money and buy an air conditioner.