$($c$)$ A room is maintaned at $26C$ and $50\%$ RH with $70\%$ recirculation. The outdoor condition is of $34C$ DBT and $28C$ WBT$.$ The cooling coil of the AC system handles mixed air at a rate of $100\frac{m3}{\text{m}\text{i}\text{n}}.$ The coil ADP is $10C.$ If the coil bypass is $10\%,$ estimate the cooling load on $($b$)$ A server room is maintained at $20C$ and $50\%RH.$ The outdoor condition is $30C$ DBT

and $40\%RH.$ The cooling coil ADP matches the dew point of the room indoor air. If the

room only has a sensible heat gain of $2\mathrm{.}4$ kW $,$ estimate the flow rate of conditioned air,

assuming that the cooling coil exit temperature same as ADP and assuming $100\%$

recirculation of indoor air. If$,$ instead of indoor air, $100\%$ outdoor air is cooled to the coil

ADP $,$ calculate the increase in the required cooling capacity of the coil. Use a psychrometric

chart and show the relevant process lines.

the coil and the supply air temperature for the conditioned space.