Gravity heating system for a small house without electricity

Advantages and disadvantages of gravity heating system

main advantage of gravity heating system is its independence from the mains.This makes it possible to use in homes with no electricity.The same applies to the benefits of a more uniform distribution of heat on the premises to be heated.Unfortunately

disadvantages in such a system are much greater than the advantages.

Disadvantages:

1. low efficiency;
2. complex installation with a constant slope of compliance;
3. Large flow tubes;
4. Restricted area of ​​heated space.For the system to function properly, the heated floor area should not exceed 100 square meters, and the radius of the system more than 30 meters.Otherwise, the coolant can not be circulated through the tubes themselves.
5. unaesthetic appearance.Associated with this drawback inability to use of modern materials, namely polypropylene pipes, since the installation is recommended to use metal counterparts.

elements of the system and their choice

Gravity system consists of: boiler, pipes, radiators and radiator expansion tank and taps, valves and fasteners.

Choosing the boiler for gravity heating system, it should be borne in mind that, most likely in a house without electricity and gas, and hence boilers fueled by gas and electricity, we do not fit.From this perspective, the most suitable boiler to solid fuel, coal-fired and wood.With such gravity flow boiler heating becomes completely dependent on electricity.

better to choose metal pipes, since they may be analogs of polypropylene melt under the influence of boiling water.

-pipe circuit heating systems

Consider the features of the installation on the example of one-pipe heating system.This system is ideal for heating a small one-story house.

When pipe heating scheme, all the elements are connected in series.That is why there is no possibility to adjust the temperature of each radiator.Also in case of failure of one of the heating elements, the entire system must be off, since a separate off part is not provided in this type of design.

heating medium passes through the pipes, series heating panels and radiators.First, the way it is more hot and gradually cooling down.To achieve the same temperature in all areas, it is necessary to take into account when installing this factor at the beginning and coolant set smaller batteries and radiators, and the smaller diameter tube and in the following areas to increase the number of batteries and the diameter of the tubes.

heating scheme

consider in detail the simplest single-pipe heating circuit with natural circulation.

With this scheme, you need to install an expansion tank at the highest point of the whole structure.

All pipes are mounted with a slope along the water movement.This technique is necessary to ensure water pressure.In order not to reduce, during the installation of the system to avoid turns and corners, as well as reduce the number of obstacles.

sequence coolant flow is clearly seen in the diagram below:

Conclusions

have gravity heating systems more disadvantages than advantages.But if the house is not connected to electricity, it is the only heating option, and, despite all its shortcomings, is a long time to serve, warming up all the room evenly.