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Thread: low temp refriger superheat
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02-08-2009, 04:51 PM #1
low temp refriger superheat
Hi, I have a question on superheat for low temp walk in freezer. when using negetive numbers what is the proper way to calculate the compressor and evap superheat. Example: I have a suction pressure temp at evap of -18 and temp at bulb is -12 do I have a 6degree superheat? If compressor suction temp is -18 and I have a pipe temp of +10 would that be a 28 degree superheat. Example at compressor: -25 and -5 om pipe ? would that be 20 degree superheat?? Thanks for all replys Paul
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02-08-2009, 06:45 PM #2
Re: low temp refriger superheat
Correct... correct... and correct.
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02-08-2009, 10:24 PM #3
Re: low temp refriger superheat
Correct, correct and correct . A part is useful superheat the rest is non useful superheat.
To make progress is never good enough, I want to do better and better and better
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03-08-2009, 03:19 PM #4
Re: low temp refriger superheat
Thank you all for the confirmation!! I sometimes second guess myself and it is nice to get confirmation that I am on the right track. Thanks again Paul
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04-08-2009, 12:47 PM #5
Re: low temp refriger superheat
When temp measured at suction valve & tex outlet , it becomes total system superheat which has a bearing on discharge end temp of compressor . Neither high superheat nor total superheat is desireable
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04-08-2009, 09:50 PM #6
Re: low temp refriger superheat
To make progress is never good enough, I want to do better and better and better
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