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Thread: Ammonia refrigerant poser!
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04-09-2006, 02:48 PM #1
robbiedapict GuestAmmonia refrigerant poser!
Hi,
I have a refrigerant related problem and I am hoping you can help me. The question is:
A vapour compression refrigerator with AMMONIA as refrigerant works between 2.908 bara and 12.37 bara. Temperature after isentropic compression is 82 degrees C and the condensate is undercooled by 8 degrees C in the condenser.
What is the COP (Coefficient of Performance) of the refrigerant?
Looking forward to the answer or any pointers you can give me...
Please help!
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04-09-2006, 07:22 PM #2
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Re: Ammonia refrigerant poser!
Assuming you mean HP of 12.37 bar and - 10 TV and 31° TC, 8K SC (what's the SH?) then COP of the compressor - not the refrigerant - will be something of +/- 3.9
Coolpack tells it allLast edited by Peter_1; 04-09-2006 at 08:40 PM.
It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.
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04-09-2006, 08:36 PM #3
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Re: Ammonia refrigerant poser!
Originally Posted by robbiedapict
Hi,
I have a refrigerant related problem and I am hoping you can help me. The question is:
A vapour compression refrigerator with AMMONIA as refrigerant works between 2.908 bara and 12.37 bara. Temperature after isentropic compression is 82 degrees C and the condensate is undercooled by 8 degrees C in the condenser.
What is the COP (Coefficient of Performance) of the refrigerant?
Looking forward to the answer or any pointers you can give me...
Please help!
This sounds like a college question???
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04-09-2006, 08:43 PM #4
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Re: Ammonia refrigerant poser!
Robbie, Originally Posted by robbiedapict
Hi,
I have a refrigerant related problem and I am hoping you can help me. The question is:
A vapour compression refrigerator with AMMONIA as refrigerant works between 2.908 bara and 12.37 bara. Temperature after isentropic compression is 82 degrees C and the condensate is undercooled by 8 degrees C in the condenser.
What is the COP (Coefficient of Performance) of the refrigerant?
Looking forward to the answer or any pointers you can give me...
Please help!
if I had such a question I would download Coolpack off the software section of RE and use it to calc.
Kind Regards Andy
We can check you answer, but you will need to do this yourself for the experience
If you can't fix it leave it that no one else will:rolleyes:
