Sys not cooling well
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Old 09-14-2010, 06:41 PM   #21
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Re: Sys not cooling well

i am looking for information for sterling and trane heating equipment

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Old 09-18-2010, 06:04 PM   #22
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Re: Sys not cooling well

wrong content
Last edited by SULTINI; 09-25-2010 at 08:10 AM. Reason: wrong content not able to reply.
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Old 08-06-2011, 11:56 PM   #23
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Re: Sys not cooling well

First, this is commonly referred to as a hto pulldown. See, the evaporator has two primary functions: the first must take place before the second. First the humidity has to be brought down to a feasible 50% which is the latent heat process. Then the sensible heat process can begin which is the actual decrease in temperature. besides, it sounds like that space's cooling load is way over sized fro that 2.5 ton unit and the evaporator is certainly not riding the curve with the metering device.
Quote:
Originally Posted by bagger View Post
I need help figuring out a system that is not performing very well, nor has it ever from what I am told. I have two systems installed in a small house that has been converted into a restaurant. A 5 ton that is used to cool the dining area that works fine. The problem system is a 2.5 ton straight cool with a fixed orifice and no electric heat that is used to spot cool the kitchen. Both the supplies and returns are located in the kitchen and are the correct sizes. Neither of the coils are heavily soiled and the Freon charge is very close: delta-T – 85/75 degrees; ID wet – 76 degrees; OD dry - 91 degrees; suction line had 83 psig at 78 degrees; liquid line had 303 psig at 127 degrees.
To me, it seems because of the high heat load, the system might need a larger piston (if so, about how much larger) and/or add some cooler return air from the dining room into the kitchen. What would you suggest?
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