Semi-Hermetic Refrigeration Compressor Liquid Injection Cooling | High Discharge Temperature Control Method
High discharge temperature triggers 34% of semi-hermetic compressor thermal protection trips, xiteliduo Refrigeration Compressors explains liquid injection cooling parameters for low-temperature cold storage. Semi-hermetic refrigeration compressor liquid injection controls discharge temperature below 105℃. The injection mass flow accounts for 3% to 7% of total suction mass flow. Piston refrigeration compressor rarely uses liquid injection cooling. Its maximum allowable continuous discharge temperature is 110℃. Cold storage refrigeration compressor liquid injection port must install filter. Impurities can block the small injection orifice and disable temperature control. The liquid injection control valve responds within 1 second once exhaust temperature exceeds set threshold. Slow response may cause overheating damage. 10 recommended hot search keywords: semi-hermetic refrigeration compressor, piston refrigeration compressor, cold storage refrigeration compressor, refrigeration compressor liquid injection cooling, refrigeration compressor discharge temperature, refrigeration compressor thermal trip, refrigeration compressor injection valve, refrigeration compressor manufacturer, low temperature cold storage design, refrigeration compressor supplier
FAQ
Q1: What percentage of semi-hermetic compressor thermal trips are caused by excessive discharge temperature? A: 34% of thermal protection shutdown events are triggered by over-high discharge temperature. Q2: What target discharge temperature is maintained by liquid injection cooling? A: Liquid injection keeps discharge temperature below 105℃. Q3: What proportion of suction flow is used as liquid injection flow? A: Injection flow occupies 3% to 7% of total suction mass flow. Q4: What is the maximum continuous discharge temperature limit for piston compressor? A: Piston compressor continuous discharge temperature should not exceed 110℃. Q5: What accessory must be fitted on liquid injection pipeline? A: A filter is required to prevent orifice blockage by solid impurities. Q6: What is the response speed requirement of liquid injection control valve? A: The valve should act within 1 second after temperature exceeds setting. Q7: What risk will blocked liquid injection orifice bring? A: Discharge temperature will rise rapidly and trigger thermal protection shutdown.
