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Thread: r404a
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23-11-2010, 11:42 AM #1
r404a
Is there anyone wants to explain me,why r404a is always charge at liquid?and not in gas,pls.help me.....thanks
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23-11-2010, 12:21 PM #2
Re: r404a
As with all belnded refrigerants which are identified with the 4 at the start of the R number are either zeotropic or aziotopic blends which are at different states at the same temp/pressure you need to charge as a liquid to ensure that the blend is kept correct
by blends means several different refrigerants comined to make 1
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23-11-2010, 01:35 PM #3
Re: r404a
If you have sure that you will evacuate all the refrigerant that is inside the vessel you don't need to charge on the liquid phase. However I think that for R404A (near azeotropic) if you charge on the vapor even if you let refrigerant on the vessel the consequences wouldn't be great.
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