Low outlet temperature of the air separation pre-cooler
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Hello, I have a question: If ice forms on the drain valve of the air separation pre-cooler, how should it be adjusted? Air inlet temperature is 22, outlet temperature is 3. The refrigerant bypass valve is fully open. The high pressure of the refrigerant is 17.5, and the low pressure is 4.2. I seek advice from experts.
The drain valve is clogged, causing water to accumulate; the low temperature at which the water comes into contact with the evaporator coils leads to freezing.
1. Increase the compressor outlet temperature. 2. Increase the frequency of drainage; it is advisable to have manual drainage, opening it slightly to keep the drainage system unobstructed. 3. Low temperatures cause freezing, which damages the evaporator; in severe cases, this can lead to leaks in the evaporator and result in a shutdown due to malfunction.
Reduce the flow of water in the air compressor’s cooling system slightly, to ensure that the outlets at various stages of the compressed air do not exceed their temperature limits, and that the oil temperature and pressure remain within normal ranges. It is appropriate to mention the air outlet temperature as well. It would be best to clean the water separator of the pre-cooler.