Determination of the installation position of the circulating water pump in the open or closed expansion water tank system

Install the circulating water pump in a system with an open or closed expansion water tank, so that the pump should be in the best position, so that the pump is used to maximize the expansion water tank.

(1) The concept of open or closed expansion water tank system

The expansion water tank in the heating circulation path of heating water furnace is connected with the atmosphere, called the "open expansion water tank system"; the expansion water tank in the heating water heating circulation channel is isolate the atmosphere, which is called the "closed expansion water tank system".

(2) The role of open or closed expansion water tank in the water system

The expansion water tank is one of the main equipment of the mechanical ring thermal heating system. Its role is mainly the pressure of the constant system, the increase in water in the system and compensation system, and also has the effect of exhausting. Usually expanded water tanks are connected to the backwater pipe near the circulating water pump.