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Evaporator Selection at 17F Design TD
Ok. I'm trying to understand how to select an evaporator. The industry uses a 10F TD as the nominal rating condition for evaporator units I see. I would like to run 17F TD (for wine) with a 1800btu/hr wine room load at 38F SST, so the wine room ambient is 55F.
So, it would it be:
Effective 17F TD coil rating = (evap 10F rated TD/target 17F TD) * (10F TD coil rating).
So 0.588 * 1800btu/hr is 1059btu/hr. So I would select a 10F TD rated coil of capacity around 1058btu/hr to run with my 1800btu/hr, 38F SST @ 90F ambient condenser.
Does this sound right?