The reason for the high pressure of the condenser what is the phenomenon of the condenser being blocked The-reason-for-the-high-pressure-of

The reason for the high pressure of the condenser what is the phenomenon of the condenser being blocked The-reason-for-the-high-pressure-of Components of the condenser system   Refrigeration After the liquid refrigerant absorbs the heat of the cooled object in the evaporator, it vaporizes into high-temperature and low-pressure steam, is sucked in by the compressor, and is compressed into high-pressure and high-temperature steam, and then discharged into the condenser. ) The refrigerant that releases heat, condenses to high pressure liquid, and throttles to low pressure and low temperature through the throttle valve, enters the evaporator again to absorb heat and vaporize, and achieve the purpose of circulating refrigeration. In this way, the refrigerant completes a refrigeration cycle through the four basic processes of evaporation, compression, condensation, and throttling in the system. The main components are compressor, condenser, evaporator, expansion valve (or capillary tube, supercooling control valve), four-way valve, double valve, check valve, solenoid valve, pressure switch, fusion plug, output pressure regulating valve, pressure It consists of controller, liquid storage tank, heat exchanger, heat collector, filter, dryer, automatic switch, globe valve, liquid injection plug and other components.   Electric The main components are motors (for compressors, fans, etc.), operation switches, electromagnetic contactors, interlocking relays, overcurrent relays, thermal overcurrent relays, temperature regulators, humidity regulators, and temperature switches (defrost, preventing freezing) Etc.). Compressor crankcase heater, water cut-off relay, computer board and other components.   Control    is composed of multiple control devices, they are:   Refrigerant controller: expansion valve, capillary, etc.   Refrigerant circuit controller: four-way valve, one-way valve, double valve, solenoid valve.   Refrigerant pressure controller: pressure switch, output pressure regulating valve, pressure controller.    Motor protector: overcurrent relay, thermal overcurrent relay, temperature relay. temperature regulator:   Temperature position regulator, temperature proportional regulator. Humidity regulator: Humidity position regulator.    Defrost controller: defrost temperature switch, defrost time relay, various temperature switches.   Cooling water control: water cut-off relay, water volume regulating valve, water pump, etc.    Alarm control: over-temperature alarm, over-humidity alarm, under-pressure alarm, fire alarm, smoke alarm, etc.    Other controls: indoor fan speed controller, outdoor fan speed controller, etc. Causes and solutions of excessive condenser pressure    1. The increase of condensing pressure will cause the compression function to increase, the cooling capacity to decrease, the cooling coefficient to decrease, and the energy consumption to increase. It is estimated that under other conditions unchanged, each time the condensing temperature corresponding to the condensing pressure increases by 1°C, the power consumption will increase by about 3%. It is generally considered that the more economical and reasonable condensation temperature is 3 to 5°C higher than the outlet temperature of the cooling water.    Causes and solutions for the pressure rise of the condenser:    1. The condenser is too small. Replace or add condenser.    2. The number of condensers put into operation is small. Increase the number of running units.    3. Insufficient cooling water flow. Increase the number of pumps running and increase water flow.    4. The temperature of the cooling water is too high. Supplement low-temperature water (tap water or well water); use frost-washing water; ensure the cooling effect of the cooling tower.    5. The heat exchange area of ​​the condenser is reduced.    6. The water distribution of the condenser is uneven.    7. There is scale on the condenser pipe.    8. There is air in the condenser. 2. Excessive exhaust temperature will deteriorate the lubrication of the compressor, increase friction and increase energy consumption; at the same time, excessive exhaust temperature will also enhance the heat exchange between the refrigerant gas and the cylinder wall, resulting in compressor efficiency decline.   Causes and solutions of excessive exhaust temperature:    1. Poor cooling of the compressor cylinder. Increase cooling water and improve cooling conditions.    2. The suction superheat of the compressor is too large, improve the heat insulation of the suction pipe or increase the liquid supply of the evaporator.    3. Inspiratory pressure is too low. The solution is the same as "Prevent the evaporation temperature from being too low". 4.Condensation pressure is too high. The solution is the same as "prevent excessive condensation pressure". What happens if the condenser is blocked   What happens if the air conditioner condenser is blocked? The pipeline of the air source takes refrigerant, and the blocked condenser is quite a liquid reservoir. The amount of refrigerant flowing into the evaporator is small, the low pressure is low, and the cooling effect is not

. The pipeline of ground source has refrigerant and water. The refrigerant is the same as the air source. The water is generally the compressor current is too high, the exhaust temperature is too high, the high pressure is too high, and the low pressure is also high , The cooling effect is also not

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