Ideal temperature drop trough the cooling coil
Ideal temperature drop trough the cooling coil
(OP)
I have difficuilty to determine the ideal temperature drop through the airconditioning coil. I have the passibility to measure temperature differnce (DB)trough the coil,RH of incoming air and CFM.I need something to compare this delta T with.Is it possible to get this information from the psychometric chart?Do I need any other information (air conditioning size, atmosveric pressurre...)?
Thanks
Thanks





RE: Ideal temperature drop trough the cooling coil
So your max temmp diff is on coil minus your refrigerant temperature. Than you have got to look at the efficiensy of the coil so get your real off coil temperature.
RE: Ideal temperature drop trough the cooling coil
http://www.udarrell.com/ACBasicsProctor1.pdf
RE: Ideal temperature drop trough the cooling coil
I saw the chart. It's nice. The only concern is the CFM. This chart is made for 400 CFM/Ton. In the field we have different CFM per ton - usualy from 350 to 450 sometimes even more. From my previous experience with CFM increasing and delta T decresing. Do you have any idea how they made this chart? Maybe I can modify it.
P.S. Is it meter? What is the size of the A/C when we calculate these valuas.
Thanks.
RE: Ideal temperature drop trough the cooling coil
and Yes the delta T decreases with an increase in CFM because the by pass factor increases and the sensible heat
increases and latent heat decreases.AS far as I can determine 400 cuft/min/ton is an ARI standerd for a wet coil
RE: Ideal temperature drop trough the cooling coil