文章
  • 文章
Search
Home >> news >>Company dynamics >> Puli Instruments tells you what parameters are needed to choose an industrial chiller
Details

Puli Instruments tells you what parameters are needed to choose an industrial chiller

æœa标题-1.jpg

  Evaporation temperature and evaporation pressure


  The evaporation temperature of industrial chillers can be reflected by the evaporation pressure indicated by the pressure gauge installed at the end of the compressor suction shut-off valve. The evaporating temperature and the evaporating pressure are determined according to the requirements of the refrigeration system. Too high cannot meet the cooling needs of the chiller, and too low will reduce the cooling capacity of the compressor, and the operation economy is poor.


  Condensing temperature and condensing pressure


   The condensation temperature of the refrigerant can be based on the reading of the pressure gauge on the condenser. The determination of the condensation temperature is related to the temperature and flow rate of the coolant and the form of the condenser. In general, the condensing temperature of air-cooled chillers/water-cooled chillers is 3~5℃ higher than the cooling water outlet temperature and 10~15℃ higher than the forced cooling air inlet temperature.


  The suction temperature of the compressor


  The suction temperature of the compressor refers to the refrigerant temperature read from the thermometer in front of the compressor suction shut-off valve. In order to ensure the safe operation of the air-cooled chiller/water-cooled chiller heart-compressor and prevent the occurrence of liquid hammer, the suction temperature should be higher than the evaporation temperature. In the air-cooled chiller/water-cooled chiller of Freon refrigeration with regenerator, it is appropriate to maintain the suction temperature of 15℃. For the air-cooled chiller/water-cooled chiller of ammonia refrigeration, the suction superheat is generally 10℃ about.


   Compressor discharge temperature


  Air-cooled chiller/water-cooled chiller compressor discharge temperature can be read from the thermometer on the exhaust pipe. It is related to the adiabatic index, compression ratio and suction temperature of the refrigerant. The higher the suction temperature and the higher the compression ratio, the higher the exhaust temperature, and vice versa.


   Subcooling temperature before throttling


   The liquid subcooling before throttling can achieve high cooling effect. The subcooling temperature can be measured from the thermometer on the liquid pipe before the throttle valve. In general, it is 1.5~3℃ higher than the outlet temperature of the subcooler cooling water.

Technical Support: 灯火科技 | Admin Login