TallCotton
Industrial
- Jan 1, 2004
- 6
Our 2000 ton York centrifugal chiller will begin operating at very low load conditions now that the temps here are beginning to fall into the high 30's at night. We experienced surging last winter and my solution was to lower the condensor water temperature to 65F from 70F. I hope some kind soul here can answer the following questions in very simple terms (thanks.)
What is surging?
What exactly is happening in the chiller while it's surging?
Why does lowering the condensoer water temp eliminate the noise the chiller makes at very low loads?
What is changing in the operation of the chiller when the condensor water temperature is dropping?
I also noticed that the evaporator saturation temperature falls when the condenser water temperature is dropped. I haven't pushed it but I've seen less than 34F. Is there a chance that this temp could go below 32F and cause icing of the evaporator tubes?
Also, is this the right way to eliminate this surging problem?
Thanks, TC
What is surging?
What exactly is happening in the chiller while it's surging?
Why does lowering the condensoer water temp eliminate the noise the chiller makes at very low loads?
What is changing in the operation of the chiller when the condensor water temperature is dropping?
I also noticed that the evaporator saturation temperature falls when the condenser water temperature is dropped. I haven't pushed it but I've seen less than 34F. Is there a chance that this temp could go below 32F and cause icing of the evaporator tubes?
Also, is this the right way to eliminate this surging problem?
Thanks, TC