Problem $3-32$ An air$-$conditioned space has a sensible heat load of $200,000$ Btu$/$h$,$ a latent

load of $50,000$Btw$//$h$,$ and is maintained at $78^($@$)$FDB and $60\%$m$.$ On a mass basis, $25\%$ outdoor air is mixed with retum air. Outdoor air is at $95^($@$)$F DB and $76^($@$)$F WB$.$ Conditioned air leaves the apparatus and enters the room at $60^($@$)$F DB$.$ The fan must produce a pressure increase of $3\mathrm{.}5$ in $.$ water to overcome the system pressure loss. Fan efficiency is estimated as $55\%.$ Draw and label the schematic flow diagram for the complete system. $($Hint; See Figure $3-1.)$

Complete the table below.

Plot and draw all processes on a psychrometric chart.

Specify the fan size, scfm$,$ and fan motor rating, hp$.$

Determine the size refrigeration unit needed, in Btu$/$h and tons.

What percent of the required refrigeration is for $(1)$ sensible cooling and $(2)$ for dehumidification?

What perecent of the required refrigeration is due to the outdoor air load?