Results 1 to 6 of 6
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31-03-2008, 10:54 AM #1
Re: R134a / Water Heat Exchanger Sizing
A 6,000 BTU coaxial condenser is the most commonly used with good success.
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31-03-2008, 01:30 PM #2
Re: R134a / Water Heat Exchanger Sizing
MG Pony thanks for your reply,
I'm building the HE myself so I need the required surface area of copper pipes in order to deliver to the water 500 Watts of cooling load.
Thanks.
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31-03-2008, 02:52 PM #3
Re: R134a / Water Heat Exchanger Sizing
If it is just for fun, research some of my old threads, other wise cheaper to simply buy a Hx.
http://www.refrigeration-engineer.co...ead.php?t=8150
Here you go.Last edited by The MG Pony; 31-03-2008 at 03:01 PM.
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01-04-2008, 01:03 AM #4
Re: R134a / Water Heat Exchanger Sizing
I followed your advice and read some of your older posts and I discovered Dan Cap. I need to clear some things in my mind about refrigeration terms since I new at cooling things! My job is to warm things up not cool them so I need some help.
When a manufacturer refers to evaporating temperature does it refer to the refrigerant temp. during evaporation or the cooling fluid temp.?
Thanks once again.
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01-04-2008, 02:15 AM #5
Re: R134a / Water Heat Exchanger Sizing
the refrigerant temp boiling inside the exchanger, it will need to be 6 or so degrees cooler then your desired fluid temp.
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08-04-2008, 11:52 AM #6
Re: R134a / Water Heat Exchanger Sizing
Thanks once again MG Pony
How can we calculate / predict the temperature of R134a at the different stages having an evaporating temp. of 10 C?
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