Expansion tanks are an important part of the HVAC system and a necessary part of vehicle conversions.
Expansion tank for closed water circulation system, played a role in balancing the amount of water and pressure, to avoid frequent opening of the safety valve and automatic replenishment valve frequent replenishment. Expansion tank to accommodate the role of expansion water, but also play the role of water tank, expansion tank filled with nitrogen, to obtain a larger volume to accommodate the expansion of water, high and low pressure expansion tanks can be used in parallel to the pressure regulator system to make up for the water pressure. The control of the device at all points are interlocked reaction, automatic operation, pressure fluctuation range is small, safe and reliable, energy saving, good economic results.
The main function of the expansion tank in the system
(1) Expansion, so that the fresh water in the system has room to expand after being heated
(2) replenishment, replenish the system due to evaporation and leakage of water loss and to ensure that the fresh water pump has sufficient suction pressure.
(3) Air venting, to vent the air in the system.
(4) Dosing, dosing chemicals to chemically treat the chilled water.
(5) Heating, if a heating device is provided, the chilled water can be heated to warm up the tank.
(2) Expansion, so that the fresh water in the system has room to expand after being heated.