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Thread: Deep freeze,Help please!
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25-04-2010, 06:12 PM #1
Deep freeze,Help please!
Hi,
I have one problem and i need Your help,Please!
I want to cool one small volume 5x5 inch only at
-70C,-90C will be great.For this deep freze i need two stage refrigeration units.R404a cant do this job?Second stage refrigeration units cool the liquid for the first stage.First stage compressor work on suction line in low pressure(vaccum ?),second stage compressor work in suction line in high pressure.
Becose its talking about 5x5 inch volume only, hermetic compressor R404a use in domestic refrigeration cant do this job?
I add to first stage compressor on high pressure line one oil separator becose of low presure in suction line make the oil from the compressor to be easy lost in the high pressure line and prevent the compressor failure.
Sorry for my very bad English,please.
Correct me Please if im wrong.
Thank You for Your time,
Respectfully,
mouse.
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