Introduce the condensing unit for cold room in a refrigeration cycle.
According to the refrigeration principle, the refrigeration compressor, condensing unit for cold room, valves and controllers are connected into a complete refrigeration device to form a closed system.
Working principle of cold storage unit compressor: a kind of driven fluid machinery that can lift low pressure gas to high pressure. It is the heart of the refrigeration system. It sucks the refrigerant gas of low temperature and pressure from the suction pipe, drives the piston to compress it through the motor operation, and then discharges the refrigerant gas of high temperature and pressure to the exhaust pipe to provide power for the refrigeration cycle, so as to realize the refrigeration cycle of compression, condensation, expansion and evaporation (heat absorption).
Condensing unit for cold room: the compressor draws in the working medium steam with lower pressure from the evaporator, and sends it to the condenser after the pressure rises. The liquid with higher pressure is condensed in the condenser. After throttling by the throttle valve, it becomes the liquid with lower pressure, and then it is sent to the evaporator. In the evaporator, it absorbs heat and evaporates to become the steam with lower pressure, and then it is sent to the inlet of the evaporator, so as to complete the refrigeration cycle.
The throttle valve acts as a throttling and depressurizing valve. When the high-pressure refrigerant liquid condensed by the condenser passes through the throttle valve, the pressure drops due to obstruction, leading to the vaporization of part of the refrigerant liquid. At the same time, it absorbs the latent heat of vaporization, and its own temperature also decreases accordingly, becoming a low-temperature and low-pressure wet steam, which then enters the evaporator.
Evaporator: the evaporator is also a kind of heat exchanger, which makes the low-pressure and low-temperature refrigerant liquid absorb the heat of the cooling medium (air, water, brine or other refrigerant) during the boiling process, so as to achieve the purpose of refrigeration.