Principle
a. The chiller generates low-temperature cooling water and delivers it to the equipment or space to be cooled by the circulating water pump.
b. The low-temperature cooling water absorbs waste heat in the heat exchanger and then returns to the evaporator of the chiller, where it is again absorbed by the refrigerant and cooled down.
c. At the same time, the refrigerant is pressurized by the compressor and then enters the condenser, where the absorbed heat is transferred to the cooling tower for cooling.
d. The cooling water after heat dissipation re-enters the evaporator of the chiller, and the cycle repeats.
Cooling tower types
Open cooling tower: cooling water directly in contact with the air for heat exchange. Has a high cooling efficiency, but is susceptible to external pollutants.
Closed cooling tower: cooling water in the closed pipe flow, heat transfer to the outside air through conduction. Not susceptible to external pollution, but relatively low heat dissipation efficiency.