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Thread: Refrigeration 101
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28-07-2009, 06:52 PM #1
Re: Refrigeration 101
Your indication comes from the condenser. Given a normal load, and assuming good condenser airflow, the SCT should be 20-35F/11-19K above the ambient (condenser air in) temperature (20-35F/11-19K cond TD), depending upon the relative coil sizing. If the heat load being rejected by the condenser is normal, then the heat load being absorbed by the evaporator must also be normal.
Last edited by Gary; 28-07-2009 at 08:32 PM.
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28-07-2009, 07:36 PM #2
Re: Refrigeration 101
Thanks Gary, thats great help thanks.
could you confirm what happens if you have a high load and a low load??
I'm assuming with a high load the SCT will reduce below 11-19K above air on to condenser and with a low load the SCT will increase to more than 11-19k above air on to cond.
I'm also assuming that under high conditons your subcooling will be less and with low load conditions your subcooling will more
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28-07-2009, 07:42 PM #3
Re: Refrigeration 101
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28-07-2009, 09:17 PM #4
Re: Refrigeration 101
If the ambient air onto the condenser remains the same and the sct decreases with low load then the cond td must get bigger.
If the ambient air onto the condenser remains the same and the sct increases with high load then the cond td must get smaller.
do you mean that with a high load the cond td would be around 11k (smaller) and low load would be around 19k (larger)
CB
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28-07-2009, 09:27 PM #5
Re: Refrigeration 101
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04-10-2010, 04:01 PM #6
Re: Refrigeration 101
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28-07-2009, 07:46 PM #7
Re: Refrigeration 101
Last edited by Gary; 28-07-2009 at 07:53 PM.
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