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Thread: Insulating hot gas lines
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26-07-2012, 09:53 PM #1
Insulating hot gas lines
Hi Everyone,
I was hoping you guys can help:
Is it common to insulate hot gas lines in industrial NH3 systems? A little bit of back ground, +25F/85F
NH3
Liquid Recirc
THANKS!
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27-07-2012, 05:25 AM #2
Re: Insulating hot gas lines
It depends. Defrost hot gas line should be insulated. Hot gas line between compressors and condensers shouldn't.
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27-07-2012, 08:57 AM #3
Re: Insulating hot gas lines
.
It does depend on what the hot gas line is used for.
Where is the hot gas going and will you still need it to be
hot when it gets there?
If you are using the hot has for defrost purposses or for
heat recovery then it would be recomended to insulate the
pipe, if the pipe is the discarge from the compressor to the
condenser then usualy no, do not lag the pipes.
Regards
Rob
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27-07-2012, 09:45 AM #4
Re: Insulating hot gas lines
Insulating the discharge line is sometimes specified where there is a risk of burns.
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27-07-2012, 10:13 AM #5
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27-07-2012, 04:14 PM #6
Re: Insulating hot gas lines
i don't think that desuperheating is bad. Actually, it helps to reduce heat rejection that required by the condenser. However, hot gas condensation in the discharge line is bad and insulation can help.
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01-09-2012, 12:24 AM #7
Re: Insulating hot gas lines
Defrost lines with the chance of condensing refrigerant should be to prevent Shock when a defrost started.