Question

a space has a sensible cooling load of 200,000 btu/h and latent cooling load 70,000 btu/h. the space is mantained at 74F DB and 50% RH. ventilation is required at a rate of 2000CFM. outside conditions are that of Cincinnati, OH. supply air is 60F DB.

a) sketch the equipment, showing known information

b) determine the room CFM

c) determine the supply air WB

d) determine the DB and WB of the air entering the AC unit

e) determine total coil load due to ventilation in Btu/lb

f) calculate coil total cooling load in Btu/lb

g) determine the EST

h) calculate the CF and BF

i) attach a psych chart clearly showing all the point in the system and the process lines as well as the EST