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sharond@its-eng
22-06-2008, 11:22 PM
Hi guys, I'm looking for a refrigerant that works 40C-200C safely, in relatively low pressures.

Thanks-
Sharon
Brian_UK
22-06-2008, 11:55 PM
That appears to be some cooling load expected.

What it the application ?
US Iceman
23-06-2008, 12:02 AM
Looks like something for an organic Rankine power cycle.
sharond@its-eng
23-06-2008, 07:49 AM
That appears to be some cooling load expected.

What it the application ?
I'm building a "heat machine" based on Carnot-Rankin cycle in order to produce mechanical power out of heat source at very high temperature. The power required is not so high
monkey spanners
23-06-2008, 08:13 AM
R718 water?
sharond@its-eng
23-06-2008, 11:44 AM
R718 water?
For water I'l need a vaccum chamber of 0.1Bar for reaching 50C
I dont know the details for R718
US Iceman
23-06-2008, 03:38 PM
Have you investigated this yet?

http://www51.honeywell.com/sm/chemicals/refrigerants/eu/en/products-n2/organic.html
Brian_UK
23-06-2008, 11:33 PM
R718 is water.
sharond@its-eng
24-06-2008, 11:22 AM
Thanks bery much!
That excactly what I needed.
Your an angle
mizun
01-01-2011, 12:59 PM
You dont need high heat to develop mechanical power. Our HIMM-The Cool Energy ORC turbines work on R245fa gas at 120C/10Bar and develops power.