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Thread: CO2 Or N20?
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08-09-2008, 11:46 AM #1
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CO2 Or N20?
Just a quick one. I have looked at the properties of these two gasses and cant find why we don't use N20 (nitrous oxide) instead of CO2?
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08-09-2008, 12:33 PM #2
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Re: CO2 Or N20?
Because everyone would steal it?
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09-09-2008, 12:22 AM #3
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Re: CO2 Or N20?
Originally Posted by HallsEngineer
To do what?
Act as a refrigerant?
I do not know the properties of N20 but I imagine it is
dearer than C02, but in truth I do not know.
taz.
.
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09-09-2008, 07:59 AM #4
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Re: CO2 Or N20?
Can you imagine how fast your van would go.zooooooooooom
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09-09-2008, 08:48 AM #5
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Re: CO2 Or N20?
Here's a quote from the United States EPA
Nitrous oxide (N2O) is a clear, colorless gas, with a slightly sweet odor. Due to its long atmospheric lifetime (approximately 120 years) and heat trapping effects —about 310 times more powerful than carbon dioxide on a per molecule basis — N2O is an important greenhouse gas....and she said "give it to me you big fridgie"
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16-09-2008, 09:24 PM #6
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Re: CO2 Or N20?
750Valve. This doesn't look right.
R22 has a GWP of someting like 1600 and R410A (a current replacement for R22) is even higher. So, this can't be the reason.
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16-09-2008, 09:26 PM #7
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Re: CO2 Or N20?
Sorry, I just noticed that it hangs about for 120 years; much more than the others I mentioned.
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16-09-2008, 10:47 PM #8
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Re: CO2 Or N20?
N20 is a good refrigerant. The triple point is at -90°C, over 36° lower then CO2, and the critical point is 6°C higher than CO2.
It has similar pressures, so it can be a drop in substitute for CO2 in very low temperature or transcritical criogenics.
The only drawback is a GWP of 240.
