Outside air at $39\backslash$deg C DB and $35\%$RH is mixed with return air at $24\backslash$deg C DB and $18\backslash$deg C WB$.$ fhe mixture is cooled by passing it through an air cooler and is cooled and dehumidified to supply temperature of $18\backslash$deg C before being delivered to space. The space sensible and latent cooling loads are $60$ and $60$ KW$,$ respectively. The flow rate of the outside air ventilation is $10000$ m$^3/$h$.$

Sketch the air conditioning plant, and processes on the peychrometric chart and find the following: $($use SHR method$)$

$($i$)$ Mass flow rate of supply air

$($ii$)$ Wet bulb temperature of supply air

$($iii$)$ Cooling coil capacity