Heating scheme (with natural circulation) of a private house with own hands

If you decide to equip the heating system for a cottage or a country house, you need to think about economy, maximum reliability and ease of work.

Features of the arrangement

If it is a question of compulsory circulation of the coolant in the pipeline system, then during the work it will be necessary to install a pump, which should be located on the section of the heating main. Thanks to such an interaction, it will be possible to provide a more rapid and constant movement of water. As a disadvantage in this case, you can allocate the cost of installing additional equipment. If you are interested in the heating scheme (with natural circulation) of a private house, there will be no need to install a pump. This is due to the fact that the density of hot water is much lower than that of cold water. Due to this, one liquid is ejected by the other. Heat carrier, moving along the highway, gives a certain part of the heat to the batteries, gradually cooling down. Returning back, the cold liquid displaces the hot and light water back into the pipes. This cycle is repeated constantly. The process can not be suspended until the boiler is heated. If necessary, the scheme of heating with natural circulation (private house, this applies in the first place) can be supplemented at any time by a pump, which the owners can use if necessary to quickly and evenly warm the home.

Main positive characteristics

The presence of the pump entails additional costs for electricity. While his absence, on the contrary, allows you to save well. Such systems are absolutely noiseless and do not cause unnecessary vibrations. The system of heating a private house (with natural circulation) "Leningradka" has a lot of advantages, among them there is a unique ability to self-regulation, a very long period of trouble-free operation, which is 30 years, thermal stability and high maintainability.

Preparation for work

If you decide to do the installation yourself , then you should consider the heating scheme (with natural circulation) of a private house. The outline will contain a specific set of elements. Among other things, it has: an expansion tank, located at the highest point; Pipeline, which can be single or double; Heating radiators, as well as boiler equipment. The latter will heat the coolant. Before starting work it is important to remember that the speed and force with which water will move through the heating system depend on the volume, weight, and density of the hot fluid. No less important is the internal diameter of the pipes, the coefficient of resistance depends on this parameter, as well as the height of installation of the heating radiators in relation to the boiler. The master must know that special requirements are imposed on horizontally oriented pipelines. They need to be installed with a mandatory slope, which is 5 millimeters per meter, turning the pipes in the direction of travel. Only so cold water will tend to the boiler. The scheme of heating (with natural circulation) of a private house presupposes the installation of fewer elements in the coolant path that would be capable of increasing the resistance.

Calculation of power before installation

If you have chosen the scheme of heating a private house with natural circulation, then before starting the arrangement of the system it is necessary to determine the capacity of the boiler equipment. Such calculations can be carried out in any of the ways listed below. The first involves the use of volume, the second - the area. Master should remember that each of these options allows you to get only approximate results under the most ideal conditions. If the building is not insulated, you should purchase equipment with a small margin. While for energy-efficient buildings it will be sufficient to take a figure of 60 watts as the power per square meter.

Determination of capacity by volume

If you are implementing a scheme for heating a private house with natural circulation, the calculation of the volume of the heated room will be the most accurate. Initially, we must determine this value by multiplying it by 40 W. The next step is to add correction factors. If it is a private house, and the premise borders on the street from above and below, then multiply the result by 1, 5. In the presence of a room that is located near the insulated wall, the value should be multiplied by 1.1. In the presence of an unheated wall, multiplication is performed at 1.3. As for every door that faces the street, you need to add 200 watts for them. For the window it is necessary to add 100 W, as the minimum value is the figure equal to 70, the coefficient in each particular case will depend on the dimensions of the opening.

Determination of the capacity by area

If the private heating system of a private house with natural circulation is equipped, then it is possible to calculate the capacity and area. The simplest method is to determine the boiler's power based on the SNiP recommendations. It is assumed that 10 square meters requires 1 kW of power. The total area of the house must be multiplied by 0.1. It is important to take into account the different coefficients, each of which is used for certain territorial areas. For example, for the Far North, this indicator can vary from 1.5 to 2. For the middle band, these figures vary from 1.2 to 1.4. If it is a question of southern areas of the country, then the coefficient can be equal to 0,8-0,9.

Installation work: two-pipe system

The water heating system of a private house with natural circulation can be arranged according to a two-pipe scheme. Despite the fact that the installation works in this case are more complex, this scheme has spread. With its implementation, the liquid will move through two pipes, one of which is to be laid from above, where heated water will flow; While the second one should be located from the bottom, there will flow a cooled liquid.

Technology of work

If you are considering the scheme and features of heating installation (with natural circulation) of a private house, then a two-pipe system can be used. Carrying out these works requires compliance with a specific instruction. At the first stage, the master must choose the location where the storage unit will be located.

Above the boiler an expansion tank is mounted, and these elements can be connected together by a vertical pipe, which after installation must be wrapped with a heater. Approximately at the level of the third of the expansion tank, it is necessary to cut the upper pipe, intended for transportation of the heated liquid. We measure the distance from the top point to the floor, then connect to the wiring. The work data is produced at a height of 2/3. Closer to the top of the expansion tank, another pipe is cut, which will be overflow. With the help of it, the surplus will be removed to the sewer system. At the next stage, the pipes are connected to the radiators. Batteries need to be connected to the lower pipeline, which is installed parallel to the upper one.

Council of the master

When the heating system of a private house (with natural circulation) is arranged by one's own hands, it is important to try to arrange the pipes as accurately as possible. At the same time, the optimal height difference between the boiler and the radiators must be ensured. The first must be mounted below the heating devices, so it is best to purchase a floor-standing device that will be conveniently located in the basement or special cavity.

Nuances of works

The attic space must be insulated. If the temperature in it is excessively low, then there is a possibility that the liquid in the pipes will freeze. It is important to adhere to several rules, one of which assumes the location of the upper tube with a certain slope, which should be about 7 degrees. If possible, the boiler equipment should be located much lower than the heating appliances. When you visit the store before starting work, you should choose pipes made of metal or polymers. The inner diameter of the products should be 32 millimeters. Balancing of two-pipe heating, if the pipes were selected correctly, do not have to produce. However, it will be necessary to install throttles on the pods to each radiator.

It should be noted that a lot of money will be spent on laying out two circuits. The master will take a long time, but such a system is more efficient and preferable.

Installation of a single-pipe system

If you are building a private house heating system (with natural circulation), it is advisable to consider the photo of such schemes before the work begins. If you decide to use a single-pipe system, you can cut installation costs. Thus it will be necessary to lay only one pipe. The system will have a circular closed loop, which assumes the location of the radiators parallel to the main ring. It is not necessary to tear it at certain points. You can equip each radiator with a radiator. Such a solution will provide an opportunity to get rid of air at each of the individual sites. To equalize the temperature it will be necessary to mount chokes and thermal heads. Today, one-pipe closed heating system is quite popular. In some cases, you can neglect the presence of the expansion tank, thus isolating the coolant. As is known, in the forced system, the speed of movement of the coolant through the piping system depends on the capacity of the pumping equipment. With the natural circulation of things are different. To increase the speed of movement of water, you must adhere to certain rules. The shut-off valves should be selected as correctly as possible, it is important to monitor the diameters. It is not necessary to supply the system with numerous turns, which can become an insurmountable obstacle to the coolant. The master must minimize any obstacles, trying to make the sections as straightforward as possible.

Recommendations for work

Such a heating system (with natural circulation) of a private house, the scheme of which assumes the presence of only one pipe, is equipped with products whose internal diameter can vary from 32 to 40 millimeters. The internal surface of the pipes should be as flat as possible, ideal, only this way it will be possible to exclude the accumulation of deposits, but metal counterparts should not be considered at all.

Conclusion

The heating system of a private house with natural circulation, without radiators, will allow you to save a lot of money. However, before carrying out these works, it is worth considering the feasibility of their implementation.