Wuxi Guanya Refrigeration Technology co., ltd
products
Contact
Tel: + 86 510 82303782
E-mail: sales@cnzlj.com
Add: No.203, Hongyun Road, Hongshan Street, Optoelectronics Park, Xinwu District, Wuxi City, Jiangsu Province,China
code chat

Large temperature difference freezer refrigerant charging instructions

In the development of modern industry, large temperature difference freezer is also important in cold treatment. In the whole process of large temperature difference freezer refrigeration, refrigerant charging is also more important. So how do you charge?

For large-temperature-difference freezer refrigeration systems without high-pressure reservoirs and low-pressure vapor-liquid separators, the control of refrigerant charge is particularly important. Because the refrigeration system is a condenser and also acts as a high-pressure reservoir, the refrigerant is stored in the condenser, and the condenser is cooled. The heat dissipation area is reduced and the condensing pressure is increased, resulting in a decrease in cooling capacity.

For the control of the refrigerant charge of such a large temperature difference freezer, during the charging process, the temperature of the condenser casing should be touched, the upper outlet of the condenser outlet is heated, and the outlet below the outlet is cool (heating) It is indicated that there is a high-temperature exhaust gas of the compressor condensing inside, and the cooling is cold, indicating that the water-cooled large temperature difference refrigerator is a liquid space). Secondly, look at the suction pressure, which corresponds to the temperature of the refrigerant water in the evaporator (that is, corresponds to the evaporation temperature). Then, depending on the return temperature of the compressor of the large temperature difference refrigerator, the return pipe of the high temperature unit should be cooled and dew, but it can be dew condensation to the compressor return valve. The return pipe of the low temperature unit should be frosted, but the frost is compressed. The machine return valve is fine. If condensation or frost builds up on the compressor casing, liquid refrigerant will enter the crankcase, causing the compressor to run oil and liquid. For hermetic compressors, the motor terminals are also shorted. Although most of the closed unit terminals are sealed with a sealant, the possibility of a short circuit still exists due to the uncertainty of the sealing effect.

The above is the refrigerant charging method of Wuxi Guanya LNEYA finishing, hope to help everyone to run a large temperature difference freezer.
Related News
Related Products
  • Direct-Cooled Ultra-Low Temperature Freezer -150 Degree

    Direct-Cooled Ultra-Low Temperature Freezer -150 Degree

    January 11, 2018InformationFreezerview
  • High-Low Temp. Test Chamber

    High-Low Temp. Test Chamber

    March 30, 2018Performance characteristics:1. In the refrigeration system, the condensation adopts air cooling mode, which has a wide temperature control range, which can meet the user's various needs.2. With a unique b...view
  • High-Low Temp. Humidity Test Chamber

    High-Low Temp. Humidity Test Chamber

    April 8, 2018Performance characteristics: 1. With wide temperature control range, can meet the user's various needs.2. With a unique balanced temperature control method, with stable and balanced heating capacity, high precision and high stable temperature control canview
  • SR TCU

    SR TCU

    April 10, 2018Working temperature range from -25℃to 200℃, other temperature range need to set to the widest temperature range(-50℃to 250℃) Centralized control of 2~20 reactors, each reactor's and jacket temperature can be set independently. One system control multipleview
  • ZLF TCU

    ZLF TCU

    April 10, 2018A set of cooling heat exchanger, heat exchanger, through proportional adjusting valve control cold heat into the heat exchanger, then through the uniform medium input to the reactor jacketed to do heat exchange and temp. Control, system has inside expansiview
  • Small Gas Condensing System

    Small Gas Condensing System

    April 10, 2018ModelHQ-0540HQ-1040HQ-2540HQ-5040HQ-0575WHQ-1075WHQ-2575WHQ-5075WGas flow5m3/h10m3/h25m3/h50m3/h5m3/h10m3/h25m3/h50m3/hLowest Temp.-40℃-40℃-40℃-40℃-75℃-75℃-75℃-75℃Primary Temp.There is no-20℃...view
  • TEL:+ 86 510 82303782
  • FAX:+ 86 510 88587187
  • EMAIL:sales@cnzlj.com
  • ADDRESS:No.203, Hongyun Road, Hongshan Street, Optoelectronics Park, Xinwu District, Wuxi City, Jiangsu Province,China