Heating system with natural circulation for a private house: simple and economical

Advantages of using a heating system with natural circulation for the house

1. Low cost. Low price for materials, installation and operation. The design works without a pump, which means that the costs for its purchase and payment for electricity are reduced.
2. Easy to install. Installation can be done independently, without the involvement of specialists, since special skills are not required.
3. Long service life. With proper installation it is able to serve more than 30 years.

Functioning principle

The heat carrier is heated under the influence of the boiler temperature, its density decreases, and it rises, starting its movement through the pipes. Passing pipes and radiators, the temperature of the liquid is constantly lowered, and when, completing the circle, reaches the boiler, then its temperature is again below the water in the boiler. Accordingly, the density is higher and it again pushes out the hot liquid with a lower density. This happens continuously. The heat carrier does not stop its movement while the boiler is running.

Basic elements of the house heating system with natural circulation

The standard set of elements is:

1. Boiler;
2. Pipes;
3. Batteries and radiators;
4. Expansion tank;
5. Taps, valves;
6. Fasteners.

How to install a house heating system

When installing a heating with natural circulation, you need to know and adhere to these rules:

1. All pipes should be located under a slope in the direction of water movement.

In order for the coolant to move independently along the pipes, they must be located under a slope. The optimum gradient is 0.005 m.per meter of running pipe.

2. In order to optimize the pressure in the pipe, it is necessary to reduce the number of valves, cranes, filters and rotations, as they provide additional resistance to gravity pressure. Or increase the diameter of the pipes.

Two-pipe wiring of the heating system

Two-pipe heating wiring uses two lines: a supply, with hot water and a discharge, with a chilled. The mains are connected in parallel, allowing you to adjust the temperature in each heated room. Two-pipe wiring can be upper and lower.

Installation of two-pipe heating wiring: stages

1. Upstream from the boiler we conduct the main and connect it to the expansion tank;
2. Expansion tank is installed at the top point of the entire structure( attic);
3. At the outlet of the expansion tank, the supply line is connected to the pipeline layout;
4. We lead pipes from wiring to radiators and batteries;
5. From radiators and batteries, we remove the pipes in the return line, and from it to the boiler;
6. The return line is mounted parallel to the supply line along its entire length;
7. Expansion tank is equipped with a pipe to drain excess liquid into the sewer.

Features of installation of single-pipe heating system

Single-pipe heating distribution is more simple and economical, by reducing the number of pipes and heating appliances.

The functioning of such a structure is not affected by the location of the boiler and batteries. Even if they are placed at the same height, the system will still function.

The volume of the expansion tank in this design can be only 25 liters. Fill it with water by ¾ full volume and constantly monitor the water level.

Conclusions

The installation of a heating system with natural circulation in a small private house is an excellent solution. Simultaneously, a practical and convenient system is ready to serve for many years.