$(2$ points total$)$ A building with a cooling load of $q_c^{}=117\mathrm{.}2k{W}_{th}$ has $SHF=0\mathrm{.}5.$ The

building is to be maintained at design conditions of $T=25C$ and $T_{wb}=18C.$ The supply

temperature of the air entering the space must be $T18C.$ Determine the following:

a$.(1$ point$)$ The minimum supply mass air flow to the space, $m_a^{}(k\frac{g}{s})$

b$.(1$ point$)$ The wet$-$bulb temperature of the supply air $(C)$