Problem $3-9$ In an air$-$conditioning unit, $71,000cfm$ at $80FDB,60\%$ rh$,$ and standard atmospheric pressure, enter the unit. The air leaves the unit at $57FDB$ and $90\%$ relative humidity. Calculate the following:

Cooling capacity of the air$-$conditioning unit, in Btu$/$h

Rate of water removal from the unit

Sensible heat load on the conditioner, in Btu$/$h

Latent heat load on the conditioner, in Btu$/$h

Dew point of the air leaving the conditioner