water cooled precoil before evaporator coil?

gtojohn · 07-26-15, 12:51 PM

After re-reading your original post you're not using your evaporator condensate water. With your air precooling water coil you would be also preheating your water before it gets to your condenser. It would seem any gain precooling your air might be a loss by preheating your condensing unit. Your a/c coils are more efficient than water coils because of refrigerant's change of state. Because of this it might be more important to supply the a/c with the coldest water possible. I think it might be a wash. I'd still look at something to do with the cold condensation water we discard.

07-26-15, 12:51 PM	#11
gtojohn Journeyman EcoRenovator Join Date: Jul 2014 Location: Austin, TX Posts: 314 Thanks: 39 Thanked 50 Times in 45 Posts	After re-reading your original post you're not using your evaporator condensate water. With your air precooling water coil you would be also preheating your water before it gets to your condenser. It would seem any gain precooling your air might be a loss by preheating your condensing unit. Your a/c coils are more efficient than water coils because of refrigerant's change of state. Because of this it might be more important to supply the a/c with the coldest water possible. I think it might be a wash. I'd still look at something to do with the cold condensation water we discard.