Closed heating system : pros and cons

Components of the closed heating system

Heating closed type has a fully sealed structure, and the coolant movement is performed by means of a circular pump, so the main components are:

1. boiler;
2. sealed diaphragm expansion tank;
3. circulation pump;
4. batteries and radiators;
5. pipes;
6. Fittings;
7. valves, cranes;
8. Filters;
9. Clamps.

The heating system of closed type there is no possibility to lose the excess liquid.To prevent accidents, the design must be equipped with a pressure gauge.The volume of the expansion tank is selected so that its volume was not less than 60% of the heating system.

Operating principle

When the temperature in the batteries and pipes increases, the expanding, the liquid enters the sealed expansion tank, which is a capsule, divided into two parts (water and air) membrane.When the temperature drops, the fluid under the influence of the pump is returned.

Closed system: especially in the construction

In designing this type of heating is necessary to consider a number of features:

1. expansion tank and a pump installed in the same room.This will reduce the yardage pipes, and accordingly and reduce costs.
2. pipes can be installed without any particular inclination and diameter as opposed to the open-type systems.This simplifies installation.
3. pump and tank better mount in the return pipe.This method will protect them from too hot water and significantly increase their service life.

Advantages and disadvantages of a closed heating system.Advantages

1. High speed coolant, depending on the technical characteristics of the circular pump;
2. Large heat;
3. Easy to install, you can make your own hands;
4. can use any heat transfer fluid: water, anti-freeze;
5. no contact with the air, which means that there is no corrosion, due to this design would be a long time;
6. no air pockets and quietly;
7. suitable for rooms with different area and number of floors.

Disadvantages

1. dependence on electricity supply;
2. necessity of safety features;
3. large volume of the expansion vessel (60% of the entire volume of the liquid heating system).

Making a closed heating on an open system

It is possible to convert an open heating with natural circulation in a closed system.To do this, you must replace the conventional expansion tank on the sealed membrane.This can be done by hand.Such a system would be workable and independent of the power supply.

Basic Principles

installation Before starting the installation you need to determine the materials, namely the boiler (it must be suitable for the power and volume), batteries, radiators, pipes and pumps.

installation design is carried out so that at any moment could turn off each of the elements of the system, without draining the fluid.To do this, use the shut-off ball valves are installed upstream and downstream in the apparatus.

security group consisting of a pressure gauge, safety valve, air vent, it is necessary to mount on the boiler.

can clearly see the basic principles of the heating system of the apparatus of mud on the scheme:

Conclusions

Closed heating system has the features pros and cons.But considering all of the above it is clear that the benefits of using this design is much more than the disadvantages.