1. The floating-point type electric heating valve should be set on the backwater pipe of the fan coil, and the traditional electric two - way valve or the electric two - way regulating valve can be used. Compared with the latter two, the former has the advantages of high control accuracy, strong operation stability, no noise and small volume. The dynamic balancing electric control valve or electric two way regulating valve should be set up on the return pipe of the new air unit and the combined air conditioner. The former is only controlled by the temperature setting of the room, which is not affected by the pressure fluctuation of the external network, and has better regulation characteristics and longer service life than the latter.
2. There is a bypass pipe and a bypass electric regulating valve controlled by pressure difference. The bypass pipe diameter should be determined according to the freezing water flow rate of 1 chillers.
3. A one-to-one corresponding connection should be adopted between the cold water set and the frozen water circulating pump. When the way connection is difficult, the common collector pipe connection can be used, but at this time, the electric partition valve should be installed on the inlet or outlet piping of each chiller, and should be connected with the corresponding chiller and water pump interlocking switch.
4, we should closely cooperate with electrical equipment and do automatic control design, so that the system can automatically control the running number of chillers and circulating pumps according to the change of air conditioning load.
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