What is the difference between an open tank and a closed tank?
1. Different properties: the constant pressure of the open expansion water tank is 2-3 meters above the higher point of the heating system. The method of setting a water tank to maintain the constant pressure at the constant pressure point is called the constant pressure of the expansion water tank. It is an open system. . On the basis of solving the problems of the first and second generation products, the atmospheric pressure constant pressure device absorbs and improves the experience of developed countries, and successfully developed the third generation intelligent atmospheric constant pressure device in line with the Chinese market.
2. Different expansion capacity: If an open expansion tank is used, it is generally set at a higher place in the building, 1m to 2m higher than the system. The access point is at the inlet of the circulating pump, but sometimes the machine room is far away. It is not necessary to connect the expansion pipe to the machine room, so connect the expansion pipe to the outdoor return water main pipe. Of course, the expansion amount is selected, which is generally 1~3% of the system capacity.
3. Different characteristics: The height of the open expansion tank is limited. When the taller buildings have higher floors and are far away from the heat source, or provide heat for high-temperature water, the erection height of the expansion tank is difficult to meet the requirements. Closed tank as long as the medium temperature changes. Such as heating, you need to consider expansion. The initial water filling is about 10°C, and the operation is 80 degrees or 60 degrees, which requires expansion. It is necessary to set up an expansion tank or an expansion tank.
