How to choose the appropriate model of expansion tube warm air water tank?

2026-10-31 08:48:18

　　Choosing the appropriate expansion tube warm air water tank model requires consideration of multiple factors to ensure that it can meet the specific needs of the system and operate effectively. Here are some key steps and suggestions to help you make a selection:

1、 Clarify system requirements

　　Heating system type: First, determine whether your heating system is a low-temperature water heating system or another type of system, as different types of systems may have different requirements for the warm air tank.

　　Temperature range: Understanding the operating temperature range of the heating system will directly affect the material and temperature resistance performance of the heating water tank.

　　Water capacity: Calculate the water capacity (Vc) within the system, which is the basis for determining the effective volume (V) of the warm air tank.

　　2、 Calculate the volume of the water tank

　　Calculate the effective volume of the warm air tank using the corresponding formula based on the temperature range and water capacity of the heating system. For example:

　　For heating systems at 95-70 ° C, V=0.031Vc (or may vary based on the latest data, such as 0.034Vc).

　　For heating systems at 110-70 ° C and 130-70 ° C, calculate using formulas such as V=0.038Vc and V=0.043Vc, respectively.

　　Here, V represents the effective volume (L) of the expansion tank, and Vc represents the water capacity (L) within the system.

　　3、 Consider the type and specifications of the water tank

　　Type selection:

　　Open high-level expansion water tank: suitable for small and medium-sized low-temperature water heating systems, with a simple structure, but attention should be paid to preventing air from entering the system and corroding pipelines and radiators.

　　Pressure tank: When it is difficult to install a high-level open expansion water tank on the top of a building, the pressure tank method can be used. The pressure tank can not only solve the problem of water expansion, but also be combined with automatic boiler water replenishment and system stabilization.

　　Specification selection:

　　Select the corresponding specification of warm air tank based on the calculated effective volume V. Different specifications of water tanks have different external dimensions and effective capacities, which need to be selected according to installation space and actual needs.

　　Refer to relevant standards or product catalogs to understand the specific parameters and performance characteristics of different models of water tanks.

　　4、 Consider other factors

　　Installation location: The installation location of the expansion tank should consider preventing the freezing of water in the tank and taking into account insulation measures. If the water tank is installed in a non heating room, insulation should be strengthened.

　　Pipeline connection: The connection of expansion pipes, overflow pipes, and circulation pipes must comply with regulatory requirements, and it is strictly prohibited to install valves on these pipelines. Valves should be installed on drainage and signal pipes for easy operation and maintenance.

　　System constant pressure: In a mechanical circulation system, the expansion pipe should be connected to the system constant pressure point, usually before the inlet of the water pump. Connect the circulation pipe to the horizontal return water main pipe before the system pressure point, and maintain a certain distance to ensure stable operation of the system.

　　5、 Refer to professional advice and case studies

　　In the selection process, one can refer to the advice of professional designers or engineers to understand their selection experience and cases in similar projects. This helps you to have a more comprehensive understanding of the advantages, disadvantages, and applicability of different models of water tanks.

　　In summary, selecting a suitable expansion tube warm air water tank model requires comprehensive consideration of system requirements, tank capacity, type specifications, and other relevant factors. By carefully comparing and evaluating the advantages and disadvantages of different options, you can choose the most suitable model of warm air tank for your heating system