$2$ kg$/$s of air at $27$oC$,100$ kPa is cooled in a chiller. Assume a value of exit temperature between $-5$ and $5$oC and determine the needed heat transfer in $($kW$).$ State all the needed assumptions$\mathrm{.}2$ kg$/$s of air at $27$oC$,100$ kPa is cooled in a chiller. Assume a value of exit temperature between $-5$ and $5$oC and determine the needed heat transfer in $($kW$).$ State all the needed assumptions.