Closed heating system: advantages and disadvantages

Components of the closed heating system

The heating of the closed type has a completely hermetic structure and the circulation of the heat carrier is carried out by means of a circular pump, therefore the main components are:

1. Boiler;
2. Sealed Expansion Membrane Tank;
3. Circular pump;
4. Batteries and radiators;
5. Pipes;
6. Fittings;
7. Valves, valves, taps;
8. Filters;
9. Fasteners.

In a closed-type heating system, there is no way to lose excess fluid. To prevent emergencies, the design must be equipped with a manometer. The volume of the expansion tank is selected so that its volume is not less than 60% of the volume of the heating system.

Principle of operation of the

When the temperature in the batteries and pipes rises, expanding, the liquid enters the hermetically sealed expansion tank, which is a capsule, divided into two parts( water and air) by the membrane. When the temperature decreases, the liquid, under the influence of the pump, comes back.

Closed system: features in the

design When designing this type of heating it is necessary to take into account a number of features:

1. Expansion tank and pump set in one room. This will reduce the pipe footage, and therefore reduce costs.
2. Pipes can be installed without a certain slope and any diameter, unlike open systems. This simplifies installation.
3. The pump and the tank are better to be mounted in the return pipe. This method, protect them from too hot water and significantly increase their service life.

Advantages and disadvantages of a closed heating system. Advantages of

1. High speed of the heat carrier, depending on the technical characteristics of the circular pump;
2. High heat dissipation;
3. Easy installation, you can do it yourself;
4. Any heat carrier can be used: water, antifreeze;
5. There is no contact with air, which means there is no corrosion, due to this the design will serve for a long time;
6. No air congestion and unnecessary noise;
7. Suitable for rooms with different area and number of floors.

Disadvantages

1. Dependent on the supply of electricity;
2. The need for equipment security system;
3. Large volume of the expansion tank( 60% of the volume of the entire heating system).

We make a closed heating system based on the open

It is possible to convert an open heating system with natural circulation into a closed system. To do this, replace the usual expansion tank with a sealed membrane tank. You can do it yourself. Such a system will be efficient and independent of electricity supply.

Basic installation principles

Before starting the installation, it is necessary to determine the materials, namely with the boiler( it should be suitable for capacity and volume), batteries, radiators, pipes and a pump.

Installation of the structure is carried out so that at any time it is possible to disconnect each of the elements of the system, while not draining the liquid. To do this, cut-off ball valves are used, installed at the inlet and outlet of the instruments.

A safety group consisting of a pressure gauge, safety valve, air vent, must be installed at the outlet of the boiler.

The basic principles of the heating system of this type are clearly visible on the diagram:

Conclusions

The closed heating system has its own peculiarities of pluses and minuses. But considering all of the above, it is clear that the advantages of using this design are much greater than the disadvantages.