Refrigeration circuit pipes freezing
Refrigeration circuit pipes freezing
(OP)
Hi there,
My background is electrical. Out of curiousity, why do the refrigeration circuit pipes (outer circumference) freezes ( i.e pipe circumference covered with ice) now and then?
Thanks in advance
My background is electrical. Out of curiousity, why do the refrigeration circuit pipes (outer circumference) freezes ( i.e pipe circumference covered with ice) now and then?
Thanks in advance





RE: Refrigeration circuit pipes freezing
There will be expansion of high pressure liquid refrigerant after TXV and partial flashing of the liquid into gas. So heat is again absorbed from the atmosphere and moisture forms dew on the pipeline.
PS: Provided, the lines are uninsulated.
Regards,
RE: Refrigeration circuit pipes freezing
RE: Refrigeration circuit pipes freezing
Hunting occurs during periods of system unbalance (low loads), when temperatures and pressures become unstable.
The TXV tends to overfeed and underfeed in response to these rapidly changing values until the system conditions settle out, and the TXV can stabilize.
It is this overfeeding condition that hurts compressors. Too low evaporator superheat setting also causes the TXV to hunt.