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03-03-2009, 04:40 PM #1
Correct Evaporator TD Calculation
Hello everyone. In commercial refrigeration (walk-in freezers/coolers), we typically estimate the evaporator TD by dividing condensing unit capacity by evaporator capacity (x10)...
But I would like to know the most accurate way to calculate this TD. Or if not calculation, must I find the saturated suction temp at which evaporator capacity is closest to condensing unit capacity (and then TD is room temp - that SST)?
Thanks in advance for your insights.
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03-03-2009, 05:53 PM #2
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Re: Correct Evaporator TD Calculation
What is purpose of that estimation?
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03-03-2009, 08:20 PM #3
Re: Correct Evaporator TD Calculation
Hi nike123. The purpose is to make sure the condensing unit to evaporator capacities are within acceptable range, to ensure correct humidity in the room. So for a storage freezer, a TD of 11 may be fine, but for a flower cooler, a TD of 8 or 9 would be more appropriate. Thanks in advance.
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03-03-2009, 08:32 PM #4
Re: Correct Evaporator TD Calculation
PS: Those examples were in deg F... So the freezer TD was 6.1 deg K and the flower cooler was 4.4-5 deg K.
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