In closed loop systems such as air conditioners, solar thermal systems, boilers, and floor heating, expansion tank is to absorb the expansion volume of this system due to temperature changes in order to prevent system's pressure from changing rapidly, reduce the number of pressure reliefs of the safety valve and the number of water feeding of filling valve.

With the improvement of people's living standards, users with swimming pools and underfloor heating in homes are becoming more and more common. Traditional heating generally uses boilers or electric heating. These facilities not only consume conventional energy, but also run expensive. Users want to use solar water heating systems instead of traditional heating methods.

Nowadays, solar energy technology has been widely used, and the most suitable solar energy product for people to live in is the solar water heater. Not only that, solar technology has been cited in home heating. Every family wants to have a good heating effect in the winter, and they will buy a variety of different heating equipment to heat the room. The cost of electricity generated over time also puts a burden on the family. The solar household heating system just helps people solve this problem, and efficiently uses solar energy to convert into heat energy to meet the needs of people's home heating. Let's take a look at the solar heating system.