Question for Refrigeration A/C gurus

Brandon · Post by **Brandon** » Mon Nov 22, 2004 11:13 pm

Is it ok to oversize the evaporator coil? What happens if this is oversized?
The evaporator coil in this instance is for a chiller, so humidity wouldn't be a factor.. Will it shorten the life of the compressor?

This is what I am thinking of:
These units state 2 horsepower - 24,000 btu, That is way more than I need and don't want to run a 220 compressor, would like something in the 8000btu range to match it with.

Will this work?

Coil: http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... RK:MEWA:IT

Phisher · Post by **Phisher** » Tue Nov 23, 2004 11:52 am

Are you wanting to run that 24,000btu heat exchanger with an 8,000btu compressor and condensor coil?

I don't think it will work well. You can use an oversized (maybe 20% larger) evap with not much problem. But with one 3x the size I don't think you will get much cooling from the coil, the compressor may just not have enough ass for the coil.

Joe

Kart Racer · Post by **Kart Racer** » Tue Nov 23, 2004 11:54 am

I would be scared of it flooding liquid refrigerant back on the compressor and destroying it. That is a lot of difference in capacity.

Brandon · Post by **Brandon** » Tue Nov 23, 2004 12:50 pm

Thanks guys, I was afraid that might be the case.. I can get a smaller exchanger from S&W Wilson Ent., but it's higher.. 1/3hp is $250, 1/2hp is $285. Gonna have to poke around some more to find a cheaper alternative.