Parameters for judging whether industrial chillers are in good condition

Parameters for judging whether industrial chillers are in good condition

Industrial chillers will have certain parameters for users to refer to during operation, which can be displayed through relevant instruments. It is possible to control and observe the various parameters of the industrial chiller during operation, allowing users to judge whether the industrial chiller is operating well. These parameters have a great impact on the economy and safety of the equipment, making the equipment within the normal range. Within the lower limit, economical and reasonable operation can achieve the effect of large cooling capacity and low energy consumption, greatly improving the life of the chiller. Here are some operating parameters of industrial chillers for your understanding.

　　1, 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 stop valve. The evaporating temperature and 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.

　　2, condensation temperature and condensation pressure

　　 The condensation temperature of the refrigerant in the industrial chiller 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 condensation temperature of industrial chillers is 3-5°C higher than the cooling water outlet temperature and 10-15°C higher than the forced cooling air inlet temperature.

　　3, the suction temperature of the compressor

　　The compressor suction temperature 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 heart-compressor of the industrial chiller and prevent liquid hammer, the suction temperature should be higher than the evaporation temperature. In Freon refrigerated industrial chillers with regenerators, it is appropriate to maintain a suction temperature of 15°C. For ammonia refrigerated industrial chillers, the suction superheat is generally about 10°C.

　　4, compressor discharge temperature

　　The compressor discharge temperature of the industrial chiller can be read from the thermometer on the discharge 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.

　　 5. Subcooling temperature before throttling

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

The above is the introduction of the main operating parameters of the industrial chiller. The user can make a judgment on the operating conditions of the industrial chiller by observing and adjusting the operating parameters. It can also make the industrial chiller the most economical and most economical under the user’s requirements. Reasonable operation helps users reduce energy consumption and save production costs.