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Thread: just a couple of questions
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25-10-2010, 09:02 PM #1
just a couple of questions
hi, new to the forum but and have found some very helpfull advice all ready.
im mainly an ac engineer but have started doing a bit of refigeration serbvice work also.
just a couple of questions if anybody can help.
1. how long does a system have to be running for before you calculate superheat and subcooling.
i.e does the room or container have to down to desired temperature. to get accurate results??
&
2. for example, evaporator with air flow i.e fan motor.. you minus 12 degrees from evaporating pressure/temp on comparitor to find expected evaporating temp. how much do you minus to find evaporating temp for plate heat exchanger, say for a reach in freezer.
hope you can help with this
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