DIY solar water heater - taking heat from the sun. Hot water supply in the house (DHW) Warming up the water

Today is New Year's Eve, so let's just rejoice. And, since it’s winter now, it would be nice to warm up a little. Therefore, today's article is unconventional water heating in winter and other lack of electricity. , so to speak.

Unconventional water heating is necessary when hot water is needed, but there are no water tanks or conventional energy sources - or you want something original. Usually you don’t want something original, so a little handicraft and humor, we hope, will be on topic.

Let's start with the theory. So, everyone knows that fire can be produced using friction. This is due to the fact that friction accelerates the movement of water molecules more and more. Therefore, if water molecules are forced to move faster in one way or another, its temperature will increase. Therefore, the first unconventional recipe for heating water:

  1. Let's say you're cold.
  2. Take a half-liter jar of water.
  3. Wrap with foam rubber (thermal insulation is an important point here).
  4. Make a small hole in the lid
  5. Place a whisk (hand or mixer) there.
  6. Insulate the lid.
  7. Wrap the structure in foil (you can use foil tape).
  8. If you have a mixer, then start whisking the water.
  9. If you have a hand whisk, then start whisking the water.
  10. After some time, the water will heat up.
  11. Yes, and you will warm up.

Like this one original version. We guarantee that it will be so :)

  1. Go to the pharmacy.
  2. Buy 20 jars of 90% alcohol (per liter of water).
  3. Wrap a two-liter jar with foam rubber and foil (insulation).
  4. Pour water into the jar.
  5. Pour alcohol into the jar.

According to the laws of chemistry, the water will heat up. If the water temperature is not sufficient, add 200 grams of concentrated sulfuric acid to the mixture. The heating will become more intense.

Both options are designed for a small volume of water. What to do if you need to heat more water? For example, here's what:

That is, candles, coasters, containers. Heating will go faster, and candle consumption will decrease if you insulate the pan (at least wrap it with foil tape).

But what to do if there are no candles, but you need even more? hot water? Here's how many, many people deal with this in an elementary way:

The only thing is that it is necessary to organize good mixing of the water, otherwise the temperature will be uneven.

And here is an improved, hotter version with organized stirring:

Second option:

Third option:

Please note: having girls without clothes raises the temperature much faster than any other option :)

Happy New Year with unconventional water heating!

If you have built a swimming pool in your country house, then it is important to decide a number of technical problems, which are aimed at servicing this structure. One of them is heating the pool water. There are many methods for heating pool water. In this article we will look at the most common techniques.

Considering that the volume of water in the pool can be large, it will require a lot of energy to heat it. And here it is important not to overdo it by installing too powerful equipment. The temperature of the water affects not only the comfortable stay in it, but also the health of swimmers. For this reason, the temperature indicator is normalized sanitary rules, along with the content in water chemical substances and microorganisms that can harm the human body.

Based on SanPiN 2.1.2.1188-03 for water quality control in swimming pools, the water temperature should be from 24 to 28 ° C, in health pools - from 26 to 29 ° C, for children under 7 years old - from 30 to 32 ° C, for children over 7 years old - from 29 to 30°C, in hot tubs– from 35 to 39°C.

Based on these numbers, you should make sure that the temperature is within the specified recommendations.

As mentioned at the beginning of this article, today there are many ways to warm up the water in a pool, here are some of them:

Does anything influence the choice of technology? Yes, there are several factors that should be taken into account, namely:

  • customer preferences;
  • volume of water in the pool;
  • features of existing communications;
  • the amount of water to be heated.

To decide which method is right for you, you should familiarize yourself with each technology in more detail.

One of the most simple ways and relatively inexpensive water heating for small pools - the use of flow-through electric heaters. Their operating principle is that they heat a continuous flow of liquid with a small pressure drop. The dimensions of the equipment are quite compact, so there is no need to additionally equip the technical room. A small booth will be enough.

As for the electric heater itself, its body is made of high-quality of stainless steel, titanium or plastic. Heating elements are able to withstand high temperature and this is achieved thanks to the stainless steel alloy.

When choosing this heater, keep in mind that its power must be equal to the volume of water. For example, if you have a shallow pool that is located in a heated room, then most likely a power of 3 kW will be sufficient.

The maximum that instantaneous electric heaters can produce is 18 kW, which is not a lot. Therefore, for a large outdoor pool, you will have to look for an alternative, and in particular if the pool has more than 36 cubic meters of water. Plus, the wiring in the house may not be able to handle such a powerful heater.

So, if we talk about the advantages of this unit, it is quite fast warming up, the ability to control the water temperature, set the automatic control mode, as well as the presence of a sensor that, in the absence of circulation, turns off the heating system. Well, we have already discussed some of the disadvantages, namely low power, high energy consumption and restrictions for houses with weak wiring.

This equipment, unlike the previous one, has more advantages, in particular in terms of energy consumption. Water is heated by connecting a heat exchanger to the heating system of a residential building. In appearance, it resembles a flask with a coil inside. Water moves along it. During circulation, the water is heated to the required temperature. As for the flow of water into this flask, it is regulated by a pump and valve. This valve is controlled by a thermostat. The coil is washed with chilled water from the pool. As you can see, everything is quite simple.

If you install such a water heating system, then the desired temperature is set on the thermostat and the automation will do the rest.

Let's talk about power. It can range from 13 to 200 kW. Accordingly, the choice of power depends, in this case, on the volume of water in the pool. The more it is, the more powerful the equipment is needed. This also affects the duration of water heating.

The principle of the heating system is as follows:

  • At the very beginning, the water is heated by a heat exchanger for two days at maximum power.
  • This is important, otherwise instrumental collapse may occur, which implies a structural change in the heater body and individual elements.
  • After this, the equipment will only need to maintain the water temperature.

The heat exchanger itself is installed between the disinfection system and pumping station. This will completely avoid equipment breakdowns due to the presence of chlorine in the water. If the water has excessive chlorine levels, it is recommended to install a titanium heat exchanger.

As can be seen from this description, the heat exchanger is much more economical, easier to operate, and also has high power. The only downside is that it takes a long time to wait for the water to heat up. desired temperature.

If you are looking for the most inexhaustible source of energy, then it is, of course, the sun. The main thing is to tame its energy so that you can heat the water in the pool. One of the easiest ways to do this is to install solar panels. Although under open air, the water itself can warm up from the sun’s rays; a completely different picture is in the case of an indoor space. Just the same, solar and solar systems will direct the energy of the sun in the direction you need.

This system consists of separate modules consisting of screens, tubes or cones. Each individual module can heat up to 30 cubic meters of water. If there is more water, then more such modules are needed.

The operating principle of solar panels is described below:

  • The collector receives the sun's rays. The collector itself is usually black.
  • The collector completely absorbs the rays.
  • The collector located inside heats up to 140°C.
  • After this, the circulation pump starts. It is installed in a storage tank.
  • In just a short time, the water in it quickly becomes hot.
  • As a result, it can be used for a swimming pool.

More expensive collector models include sensors and three-way automatic valves. Due to this, water is sent to the heat exchanger automatically. Thus, continuous circulation of water is organized.

If you select positive sides this technology means very fast heating of water, simple system management. But if the weather is cloudy, then the efficiency of such a system will decrease significantly.

If you are interested in heating speed and power, then heat pumps are the new and most popular way to heat water. The only thing that scares many buyers is the high price. The principle of operation is as follows (the action resembles the operation of a coolant that uses condensates, etc.):

  1. The primary source of heat can be industrial or domestic wastewater that has been treated.
  2. The external pipeline is located underground.
  3. The working fluid is pumped through it using a circulation pump.
  4. Due to the temperature of the soil, at the outlet this liquid increases in temperature by several degrees.
  5. Next, the mixture is sent to the heat exchanger.
  6. In it, the liquid gives up its heat to the refrigerant, which quickly boils. Even a low temperature is enough for it.
  7. As a result of boiling, steam is formed, which enters the compressor and is compressed to 25 atm.
  8. During this process the temperature rises to 55°C.

The energy resulting from such actions is sent to the pool to heat the water. The work of the entire system is carried out in a closed circle, according to the principle of circulation. As a result, power heat pump can also be used for other household needs. For example, you can provide heat to a house up to 300 m2.

An important advantage is expressed in the high power and speed of heating the water. Free energy sources are also used: earth heat, exhaust gases, Wastewater etc.

We looked at options for heating a pool that are quite expensive. Now we bring to your attention heating options from do-it-yourselfers. The main advantage of these techniques is minimum costs. Consider one of the many options homemade unit for heating the water in the pool.

Firewood has been and remains the most affordable source of fuel. Strange, but there are no industrial units using this fuel. That's why it was invented homemade system heating water. The essence of this idea is that a metal coil is installed inside the firebox. Water is supplied to the inlet using a pump. Through the second hose, the heated water in the coil enters the pool.

The main thing in this method is to select the speed of water movement. Otherwise, the water may either boil or not warm up enough.

Another option is to install a coil inside which a fire is built. A risky method, but it has its place. You can easily use it on a hike. The only thing that needs to be considered is the removal of hot water. To do this, you can use a heat-resistant hose or metal-plastic pipe. In this case, heating will be realized without electricity.

It's one thing to heat water, but without good heat retention, you will have huge energy costs. It is a known fact that large quantities heat goes away at night. To reduce losses, you can build a canopy over the pool. In this case, the canopy can be:

  • Folding.
  • Sliding.
  • Stationary, etc.

If it is not possible to install a canopy, then you can use a blanket or film that floats on the surface of the water. The film must be straightened at night and removed in the morning, then the water will have enough comfortable temperature, and the cost of heating it will be reduced.

Instead of film, you can use awnings that cover the entire surface of the pool. But the disadvantage of this option is that it will be inconvenient to put even a small awning over the pool alone. However, they are quite effective.

For example, if you have a rectangular pool, then straightening the awning is as easy as shelling pears. On one side, at a distance of 1.5 m, attach light planks. Holding on to them will make it easier for you, even alone, to straighten the awning.

So, we discussed how you can quickly heat the water in the pool. Choose the technology that is available to you. We and our readers will be interested to know how you heat your pool at the dacha, so leave comments at the end of this article.

Summer, dacha, swimming pool - the dream of city dwellers. And many, trying to realize it, choose to be closer to nature during the hot season. But here’s the problem: the main equipment has been purchased street version, and its kit does not include a heating device. Therefore, let’s take a closer look at ways to heat water in a pool. First, let’s look at what types of swimming structures exist.

Types of pools

For summer cottages and country houses, seasonal outdoor models are very popular:

  • Inflatable. Such designs have become famous due to their low price, ease of installation/disassembly, and mobility. Most often they are purchased for children. Small volumes and low sides ensure safety for children.
  • Frame. The types and volumes of such models are numerous. They differ affordable price, easy installation, mobility. Purchased for family holidays.
  • Bowls. This option applies to stationary ones. The shape and size can be very diverse. Buy for the whole family. Installation is simple, the price is quite high compared to previous options. Requires communications.
  • Concrete. The most expensive of the above and technologically difficult option. But the design, volume, dimensions are made to suit any request. When constructing such structures, a heating system is thought through at the design stage.

As you can see, the modern market offers a wide range of models.

Can be purchased a budget option or start a major construction of an outdoor covered structure.

Temperature standards

There are a number of indicators of a comfortable stay in the pool. One of them is the optimal temperature regime. For an adult it should be within 24-28 °C, for a child - 29-32 °C. Such temperatures are intended for active water recreation without harm to health. Therefore, how to heat and maintain heat in a pool is one of the hot topics of the summer.

Heat saving elements

Before considering the question of how to heat water in a pool, you should familiarize yourself with heat saving methods. There are several options:

  • Covering material. Typically, the structure is covered at night to prevent severe cooling. The same material will help warm the water by several degrees if the pool is left covered during the day. The most effective option is bubble wrap.
  • Sometimes a pavilion is built over the pool. Some craftsmen use old greenhouses. This option amazingly retains heat at night and allows you to heat water during the day.
  • Select or arrange structures for swimming with color design bottom, which will absorb heat. This will significantly speed up the process of natural heating of water from sunlight.

The measures considered can be applied comprehensively; they will significantly reduce the cost of heating liquids using electricity.

How to quickly heat water in an inflatable pool

Such structures have a small volume, so one of the popular ways to increase the temperature is to heat water in containers using a separate heat source (gas, electric stove, Electric kettle, fire, sauna).

After that, it is carried and poured into the pool, achieving the desired temperature. The method is one of the simplest and safest. But it is suitable for small volumes, for example, children's structures.

Some people try to heat the water in the pool with a boiler. Yes, it can be done. But don't forget about safety. If this method is used in a place where there are children, then they should not be left unattended even for a second. The consequences can be very sad, given children's spontaneity and curiosity. Therefore, think several times about the safety of this method before using it.

We looked at two options for how to heat water in an inflatable pool, now let’s take a look at other, more powerful equipment for such purposes.

Flow heater

Used for structures no more than 35 cubic meters. m. The operating principle is based on the circulation of water through a container with a built-in heating element. The recommended temperature of the incoming liquid should not be lower than 18 °C. The cost of such equipment is low, but significant energy costs arise. The power consumption of the installations is from 3.5 to 18 kW. By using covering material, these costs can be partially reduced.

Heat exchanger

“How to heat water in a swimming pool without electricity?” - this is one of the popular questions. Heat exchangers are just such devices that operate from the heating system. They are presented in which there is a coil inside. This equipment also includes circulation pump, thermostat, valve. Liquid from the heating system is supplied to the coil, and water for heating is supplied to the cylinder itself. Having reached the desired temperature, it enters the pool. Operating parameters are set using a thermostat. The power of such installations reaches 200 kW, which is suitable for heating large volumes of water.

The disadvantage of the heat exchanger is that it depends on the heating of the house. In summer it is usually irrelevant. Therefore, a separate operating circuit will be required to heat the pool. And this will entail reworking the project gas heating and unnecessary financial costs.

Solar collectors

How to heat water in a pool at your dacha using natural resources? This issue is especially relevant in areas where there is no gas connection and the electricity supply is unstable. Solar collectors in such cases become ideal option solving the problem.

Nowadays, such equipment is purchased in stores that sell swimming pools. The units are quite compact and can be placed near the swimming structure. When heated, the collectors transmit thermal energy water in the storage tank, after which it enters the pool. This method will allow you to quickly reach the desired temperature in sunny weather, but this will not work in cloudy weather. One collector module can heat up to 30 cubic meters of water, respectively, their quantity is adjusted to the required volume.

Such equipment should not be purchased in regions where cloudy weather prevails. It will not be economically justified because additional heating devices will have to be used.

Solar mats

This type of solar collector is presented in the form of two pieces of black film, soldered in such a way that internal space channels for water circulation are formed. Such a system is connected to a conventional pump included in the basic equipment package. How to heat water in a pool with such a device? Quite simple: it is launched onto the surface of the water, and the pump is placed on the bottom, from where it will supply liquid for heating.

This design operates from a regular network. Minus - it is intended for small volumes and depends on sunny weather.

Heat pumps

This is a fairly new, and therefore expensive, way to heat water in a pool. This equipment is interesting because it can be used in two ways at the same time: as a home air conditioner and a water heater.

The operating principle is based on the operating technology of conventional air conditioners, only in the opposite direction. Swimming water is heated in the condensate system, and the refrigerant cools due to this. The heat itself is taken from the surrounding air.

The power consumption of such a device is three times lower than instantaneous water heater. Therefore, the high purchase price will justify the reduction in energy costs. This equipment is also notable for the fact that it can operate effectively at temperatures environment+5 °С. Having dealt with factory instruments, it is worth familiarizing yourself with what folk crafts offer in this area.

Rubber manifold

For this type of water heater, take a regular watering hose, preferably black, and lay it flat in the shape of a snail. One end is connected with clamps to the hole in the pool, the other to the pump filter. Circulating through the formed system, the water is heated. This method is good for sunny days. This is one way to quickly heat the water in the pool.

Wood heating

A coil is taken; the performance depends on the size of its spiral. It is better to prefer stainless steel. One end is connected to the hole in the pool, the other to the pump. The coil itself should be mounted in a container in which firewood will be burned. This is enough effective option how to heat water in a frame pool.

For greater effect, you can make a coil - a container for burning. That is, the firewood will burn in the internal space formed by the tubes. This is an even more efficient device for heating water.

This method distinguishes low price, independence from energy resources, high speed, independence from weather conditions. The disadvantages include the need to control heating. Overheating can cause the pool to deform.

A few important points

Since heating water in a pool using electricity and heating is quite an expensive task, the field for activity of folk craftsmen is quite wide. Interesting direction- is the use of natural resources such as wind, sun. By “taming” them, you can get a free and high-quality source of energy, which is suitable not only for but also for other needs.

You should be careful with homemade electric heaters. All safety measures should be observed during their creation and operation, this process should not be ignored and children should not be allowed into it.

If we consider factory-made heating products, then the choice depends, first of all, on the financial component. You should pay attention not only to the initial price of the equipment, but also to the costs that will be necessary to connect and operate it.

Swimming in pools is one of the popular recreational activities for Russians. Therefore, the topic of heating water is always relevant. What choice will be made depends on the weather conditions of the region, the parameters of the pool, financial opportunity. The main thing is to follow the installation technology and safety precautions during operation.

There are two main ways to prepare hot water. First, the water is heated while moving through the heater and supplied to the water tap. Such a heater is called a flow-through heater.

The second method is to heat a large volume of water in a thermally insulated container, then gradually consume it. Such a heater is called a storage heater. The energy source is usually gas, electricity or heated coolant from the heating system.

Flow-through – high peak power

The instantaneous heater must be relatively powerful in order to provide the required flow of hot water to the tap. For a shower head, a power of at least 10 kW is required, for filling a bath - from 15 kW, for two hot water taps - from 20 kW.

Heating water with an electric instantaneous heater is not cheap. In addition, it is necessary three-phase connection(over 6 kW) and special permission for greater power.

It is optimal to provide several taps by installing a compact electric flow-through heater on each of them. At the same time, protection is installed against their simultaneous operation, so as not to overload the network.

A cheaper option is heating water using gas. Are used geyser, or the second circuit of the heating boiler. The power of such devices can be enough for two taps, and hot water is cheaper.

Disadvantages of flow-through


With a flow-through circuit, the heater should be located as close to the tap as possible in order to drain less water until it gets hot. The recommended distance is no more than 5 meters. But in any case there will be excessive consumption of water and energy. A similar drawback is typical for a storage heater.

Another drawback flow circuit DHW (hot water supply) - inability to pick up some hot water. Each device has its own minimum power. Therefore, when water flow is low, it simply does not turn on.
This also results in waste of water and energy.

Pressure surges in the system cause discomfort because they change the outlet water temperature.

IN retail outlets in order to sell an unsuitable flow-through electric heater, they simply indicate that it produces so many liters of water at such a temperature, for example, +50 degrees, which at first glance is acceptable. But it is not indicated at what temperature the water is heated. The key characteristic of such a device is the temperature difference. After all cold water usually +6 - +10 degrees, not +15 or +20.

Storage water heating system

The main advantage of an electric storage tank with a power of 1.5-2.0 kW is that it can be installed anywhere, in any house or apartment where there is a 220 V power supply. Its volume is usually 25 - 150 liters (running volume 50 - 100 liters) . The water in it is heated gradually to a predetermined temperature, and when withdrawn it is possible high consumption, the temperature decrease occurs gradually.


It is cheaper to heat water with a gas storage heater with a low-power burner (up to 3 kW). The fact is that such a heater does not require a special chimney. But it can only be installed in agreement with Gorgaz, probably on a separate project. Provided with air from the room (with an exhaust system).

Disadvantages of savings

  • Limited amount of water, which can create difficulties. For example, if one portion of the tank volume is consumed for bathing, then it takes a lot of time to prepare the next volume.
  • The heater must be installed next to the water supply; if the bathroom and kitchen are separated, then a separate storage tank must be installed on each tap.
  • Energy is wasted due to cooling of unused hot water in the heater.
  • Excessive consumption of water when draining water from the tap, which has cooled in the pipeline.

Indirect heating boiler - stable hot water system

Boiler advantage indirect heating The point is that heating uses the energy of the heating system, which is abundant and usually not expensive. Therefore, there can be a lot of hot water, its temperature is stable, and water is cheaper.

An indirect heating boiler is storage capacity for 100 - 300 liters. Heating is carried out by a spiral pipeline through which the coolant heated to 80 - 90 degrees moves.

Heating systems are created in such a way that when the hot water supply cools below a threshold value, for example +50 degrees, the boiler switches to heating the boiler. At the same time it issues elevated temperature operates at full power, heating the hot water supply to the upper threshold value, for example, +60 degrees. After which it switches back to heating.

With buffer capacity – the largest energy reserve

IN buffer capacity the opposite is true - a large volume container is used, about 1 ton or more filled with coolant, and the heated water moves in a spiral, i.e. direct-flow heating occurs. But when additional taps are opened, its temperature changes slightly, since the design has a large reserve in terms of the amount of transmitted energy.

The temperature of the hot water will be the same as that of the heating fluid. Sometimes this is not suitable, so the water supply scheme also includes mixing unit to reduce temperature...

Heating systems with solid fuel boilers are mainly supplied with a buffer tank.

Other features of heating water by heating

Single-circuit gas or liquid boilers are often equipped with a boiler.

Another feature of the system is the ability to create constant circulation of water through a ring water supply pipeline. Then, when you open the tap, you immediately get hot water. Cooling of water is not considered a loss of energy, because it is spent on heating the house.

There is still an opportunity to save - an additional heating coil is placed in the boiler and connected to the solar collector. The sun's energy is called free energy; it is spent on solar collectors in this case it pays off. This makes it possible to heat water in the summer; if there is not enough energy, the boiler is connected.

Layered heating boiler

The main disadvantages of a conventional direct-flow heating system with gas heater(second circuit of the boiler) or electric is solved by installing a layer-by-layer heating boiler. One or more per tap. It is a heat-insulated container into which hot water is supplied from above. Its fence is also carried out from the same level.

Such a boiler makes it possible to simultaneously obtain a lot of hot water at a stable temperature. With it you can pick up “a little water” and also ensure the least amount of cold drainage. A conventional heating boiler can also be used as such an intermediate storage tank.

Error - incorrect connection of the DHW boiler

One of the common mistakes when creating a hot water supply system in a house is connecting an indirect heating boiler to the second circuit of a double-circuit boiler. This circuit itself is designed for preparing hot water, and therefore has a limitation maximum temperature at +60 degrees to prevent thermal burns.

Now the most comfortable and economical solution for creating a hot water supply system is to install an indirect heating boiler, where this can be done. Rest DHW schemes can be considered forced decisions that are dictated by circumstances, for example, savings when creating...