High Pressure Side of the Cooling Room

  • The section from the compressor outlet through the condenser to the expansion valve is called the high pressure side of the Cooling Room ; the pressure in this section is equal to the saturation pressure of the refrigerant at the condensing temperature. High-pressure side is characterized by: refrigerant to the surrounding environment is condensed into a liquid heat, refrigerant flows out of the condenser, the temperature dropped into supercooled liquid.

    The section from the outlet of the expansion valve to the return air into the compressor is referred to as the low pressure side of the refrigeration system and its pressure is the saturation pressure of the evaporation temperature within the evaporator. The low-pressure side of the refrigerant first showed a wet steam state, and the refrigerant gradually changed from wet steam to vapor refrigerant after absorbing heat in the evaporator.

    At the evaporator exit, the temperature of the refrigerant is returned to the superheated gas state. When the supercooled liquid refrigerant passes through the expansion valve, the pressure is reduced from high pressure to low pressure (but no power is consumed and there is no heat exchange in the outside world) due to the throttling effect. At the same time, a small amount of liquid refrigerant is vaporized and the temperature decreases. Refrigerant into the evaporator after evaporation (vaporization) endothermic. Low temperature and low pressure gas refrigerant is sucked into the compressor, and through the compressor into the next refrigeration cycle.

    Advantages of choose chinacoldroom.com for cooling room:

    1.Electrical parts are integrated, including main electrical appliance, main control panel, cold room temperature control panelwhich are all optional for customers.

    2.With main control panel equipping, compressor isautomatically switched on and off based on system presser;

    3.With all abovecontrol panels equipping, compressor is automatically regulated and have control function for cold room temperature and defrosting.

    4.Multi-protectionfor such situations as phase loss, overcurrent, compressor frequent starting, exhaust temperature, compressor module, oil presser (especially for compressor with oil pump), high or low systems pressure, etc.

    5.Fans speedis controllable and the condenser fans speed is adjusted based on condensing temperature chang

    6.With failure alarm and inquiry function, users will be warned by buzzer when equipment failure

    7.The control panel shows all the related temperatures, working status and has failure alarm function. It can be installed separately where is easy tooperate and monitor for users.

    In the refrigeration cycle, the heat flow per kilogram of refrigerant circulating from the object to be cooled is called the unit weight capacity, expressed in symbol q, in kcal / kg. The unit weight capacity is a special parameter that indicates the effect of the refrigeration cycle. This is determined by the nature of the refrigerant, circulating temperature and other conditions, the lower the evaporation temperature, the higher the condensation temperature, the smaller the value, the greater the contrary. The cooling capacity of the refrigeration unit is the quantity of heat absorbed by the object to be cooled and released in the condenser per unit time, indicated by the symbol Q in kcal / kg. The value of Q is equal to the product of the cold weight flow rate G and the unit weight capacity q, ie, Q = G·q.

    Zhaoxue Cooling Room Manufacture Refrigerated Cold Room