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Thread: R401A table
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13-06-2013, 05:02 PM #1
R401A table
I have doubts about R401A table below:
http://mrmech.com/technical-referenc...4a-r401a-r401b
For example: For R12 at -15 degrees celsius I have 11.8PSI in sucction line.
I confuse because the table has 2 columns for the same refrigerant.
So what what be the correct equivalent for R401A, 16 ir 10 PSI ?
Moises
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13-06-2013, 05:31 PM #2
Re: R401A table
Moises,
R401a is a Zeotropic blend, the components in it boils off at different temperatures/pressures.
Therefore the pressure will depend on if the refrigerant is in it's liquid phase or in it's gas phase. In your example above where you are looking at a suction line you therefore need to read the vapor pressure.
.
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13-06-2013, 06:01 PM #3
Re: R401A table
Thank you. So, is it correct to calculate the subcooling by the liquid column of the table and superheat by the gas column ?
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13-06-2013, 08:56 PM #4
Re: R401A table
Yes.
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