How to Choose an expansion tank for heating systems

Expansion tank - a container of special design, intended to provide compensation for thermal expansion of the working fluid filled in the brownie heating system. This element is very important for the proper functioning of the heating system. That is why we decided in today's article to tell how much the expansion tank volume with how to pick up and install it.

What type of heating tank must be selected to choose the right model of the expansion tank, should be based on the type you have installed a heating system, which can be:

* Open;

* Closed.

To choose the right heating system, you should determine the amount of heat needed by your home. Learn how to do it, you can read an article devoted to this subject.

open tank

Tanks of this type are designed for installation in heating systems in which the coolants are moved by gravity in the pipes. To properly install this expansion tank, should be to find the highest point of the pipeline and it is there to connect it. The simple design of the device provides compensation for thermal expansion of the heat transfer fluid and air from the retraction cavity system.

Since the liquid is able to evaporate from the reservoir, should regularly monitor the level to ensure timely gravy. Among the advantages of this device it should be noted:

- simplicity of design, which allows to perform the installation of its own; - the ability to create fully-volatile heating system.

Because gravity-fed heating systems are relatively low efficiency, tanks of this type are now used infrequently.

closed tank

These devices may be installed as part of the heating systems of all types. Since the capacity of the tank is closed, the likelihood of coolant contact with the atmosphere is completely excluded. Due to this reduced level of danger of corrosion for the elements included in the heating system, thereby substantially increasing their durability.

Sealed expansion vessels are characterized by the following important advantages:

- the absence of evaporation of the operating fluid, so fluid level can not follow, and the need for its sauces in no longer;

- operation of the system may be under pressure;

- the tank does not need insulation and protection from freezing, because its installation is performed most often in the boiler room.

Bleeding of the tank is made using a special manual or automatic valve. If there is a manual valve tank must have a pressure gauge allows you to check the level of pressure in the system.

How to perform a calculation of the amount of the required expansion tank

It is understood that the tank volume is a key parameter in the process of selection. Typically, designers assumed that the volume of the tank should be installed approximately 10-15% of the coolant volume located in the cavity system.

To perform a calculation of the total amount used in the coolant system, we recommend that you look at our article on this subject, which we have placed here.

To determine the optimal volume of the tank to be installed in the home heating system, you can use our calculator: https://www.allremont59.ru/inzhenerka/otopl/rasshiritelnyiy-bak-vyibor-i-tsena.html

Expansion tank: the price of devices of various sizes

Price expansion tanks depends on the volume and its brand. For example, the cheapest brand JEELEX tank 6 by 6 liters will cost 800 rubles, and the most expensive product brand JEELEX 700 to 700 liters costs 55 thousand rubles.