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Topic: Refrigerant with high critical temperature!  (Read 6630 times)

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Offline galey

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Refrigerant with high critical temperature!
« on: April 01, 2008, 10:24:25 PM »
I am thinking of making a refrigeration system for my submarine to cruise around volcanic vents where the temperatures can reach 160 degrees celsius  ??? :o ???

I am just stuck  ;) in finding an apprpriate refrigerant... It needs a critical temperature above 160 degrees celsius and a boiling point below 10 degrees celsius  :-\ does anyone know of a refigerant that fits this description or knows where i could find one?  ??? ??? ??? I dont care if it has CFC's.  Also i need the acentric factor from said refrigerant.
Any help would be appreciated  :-* :-* :-* :-* :-* 8)
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Offline galey

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Re: Refrigerant with high critical temperature!
« Reply #1 on: April 01, 2008, 10:27:31 PM »
****UPDATE: The critical temperature needs to be above 200 degrees celsius!
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Offline galey

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Re: Refrigerant with high critical temperature!
« Reply #2 on: April 02, 2008, 12:24:10 AM »
 :) ;) :D ;D >:( :( :o 8) ??? ::) :P :-[ :-X :-\ :-* :'(

el oh el
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Offline Brews

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Re: Refrigerant with high critical temperature!
« Reply #3 on: April 18, 2008, 05:26:11 AM »
R718 - aka water?

Vapour pressure at 10°C is 0.01 bar, critical temperature 374°C. Evaporator pressure might be a bit low for a practical system.

n-pentane

Critical temperature 196°C, Boiling point 36°C at 1 bar?
« Last Edit: April 21, 2008, 06:41:02 AM by Brews »
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