REFRIGERATION UNIT is a water cooling equipment, which can provide a cooling equipment with constant temperature, constant current and constant pressure. During the operation of the chiller, changes in temperature will cause changes in condensing pressure. The high condensing pressure will lead to the continuous increase of the power consumption of the compressor, and the refrigerating capacity will gradually decrease, which will indirectly make the circulation of the low-temperature chiller worse. It is necessary to appropriately reduce the condensing pressure.
If the condensing pressure of the low-temperature chiller is too low, the throttle valve has insufficient liquid supply power, and the high-pressure liquid pipe is affected by heating factors, which will reduce the capacity of the throttle valve. It is imperative to control the condensing pressure throughout the year. The pressure of the condenser can be controlled by adjusting the heat exchange capacity of the condenser. When the heat exchange of the condenser increases, the gas discharged from the compressor (scroll, piston) is fully condensed, and the condensing pressure gradually decreases; if the heat exchange performance of the condenser is weakened, the condensing pressure continues to rise. Next, take a look at the detailed operation steps of REFRIGERATION UNIT:
REFRIGERATION UNIT regulates the cooling water flow to control the condensing pressure. Install a regulating valve on the condenser cooling water outlet pipe. There are two modes for the water volume control valve: one is a temperature type water volume control valve that uses the temperature at the outlet of the cooling water of the condenser to indirectly send a letter. It has a temperature sensor that is inserted into the condensate outlet. When the water temperature rises, the valve opens large; when the water temperature decreases, the valve closes small. The other is a pressure-type water volume control valve that uses the condensation pressure to directly send a signal, and the pressure signal is drawn from the condenser. When the condensing pressure gradually increases, the valve opens large; when the condensing pressure decreases, the valve closes small, thereby changing the cooling water flow of the condenser.