What is the cause of the high exhaust pressure of the compressor?
The problem of air in the high-pressure system: air (or ammonia decomposed into non-condensable gases at high temperatures, such as nitrogen, hydrogen, etc.) is harmful in the refrigeration system, which can increase the working pressure of the condenser. If the condensing temperature is +35 ° C at that time, the corresponding condensing pressure is 12.5 Kg / CM2 gauge pressure, the pressure on the actual pressure gauge is 14 Kg / CM2 gauge pressure, which is more than 1.5 Kg / CM2 gauge air occupancy It is condensing (theoretical basis is Dalton's law). As the exhaust pressure is increased, the exhaust gas temperature is also increased, the cooling capacity is reduced, the power consumption is increased, the condensing pressure is increased by 1 Kg/cm2, and the power consumption is increased by 6 to 8%, so it is necessary to frequently remove the air of the high-pressure system, ammonia. Air vents or air separators in the system are specifically designed to vent air. If the Freon system is not enough vacuum when it is put into production, it will be mixed with air when it is added. After the parking is cooled, the venting port is slightly opened and the gas is discharged. The venting is based on the atmospheric temperature after cooling or cooling. The water temperature counts back the condensing pressure and deflates to near the condensing pressure.
