Will a Mixed Refrigerant Separate in a Tank?

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VR1 Participant Join Date: Jul 2010 Posts: 3	Will a Mixed Refrigerant Separate in a Tank? 07/20/2010 3:48 PM
	Will a mixture of r-22 and r-410a in a tank separate and will the 410a pool in the lowest part of a tank? I pulled a sample off a 1000 Lbs tank 80% full of reclaimed r-22 and when I tested for purity got 100% R-22 off the vapor side of the 2 way valve. I pulled a sample off the liquid side of the valve which comes via the dip tube which pulls from the bottom and lowest part of the tank and got 98.5% r-22 and 1.5% " other" refrigerants mostly R-410a. Could R-410a pool at the lowest part of a tank if mixed with R-22? The tank is brand new and I used new hoses.
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energygod Guru Join Date: Apr 2006 Location: Cincinnati, Ohio, USA Posts: 662 Good Answers: 49	#1 Re: Will a Mixed Refrigerant Separate in a Tank? 07/20/2010 11:23 PM
	I am at a loss regarding WHY you would want to mix these products. First- they have totally different densities and boil points. Second- their active pressures are totally mismatched. R 410 operates at MUCH higher pressure than R 22 at any given temperature. __________________ NO MATTER HOW WELL YOU HAVE DONE SO FAR, ALWAYS TRY TO BE BETTER TOMORROW.
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VR1 Participant Join Date: Jul 2010 Posts: 3	#3 In reply to #1 Re: Will a Mixed Refrigerant Separate in a Tank? 07/21/2010 11:42 AM
	I don't know how you got the idea that I mixed these refrigerants. I'm trying to figure out how to get the 410a out of the tank. But thanks for the input.
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#2 Re: Will a Mixed Refrigerant Separate in a Tank? 07/21/2010 3:23 AM
	Welcome to the world of liquid/vapour equilibria! No, the liquids will not separate by gravity alone. However, wherever there is a liquid/vapour interface in a 2-component mixture, the vapour will be richer in the lighter component and the liquid richer in the heavier, as one might expect, because of the difference in their boiling temperatures at the given pressure. To carry out a detailed analysis, mug-up on a bit of distillation theory. Perry, "The Chemical Engineer's Handbook", any edition, perhaps? __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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VR1 Participant Join Date: Jul 2010 Posts: 3	#4 In reply to #2 Re: Will a Mixed Refrigerant Separate in a Tank? 07/21/2010 12:01 PM
	So if I pull only vapor out of the tank with the mix to another tank and as the 2nd tank fills will the 2nd tank be a more pure mix than the 1st? If I pull say 75% out of 1st tank out via vapor side then stop. Will tank 2 still contain the heavier 410a? Thanks for your input and the tip on the book.
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