Problem $05\mathrm{.}086-$ Heat exchanger

Refrigerant$-134$a at $1$ MPa and $90\backslash$deg C is to be cooled to $1$ MPa and $30\backslash$deg C

in a condenser by air. The air enters at $100$ kPa and $27\backslash$deg C with a

volume flow rate of $600($m$^(3))/($m$)$in and leaves at $95$ kPa and $60\backslash$deg C$.$

Determine the mass flow rate of the refrigerant. The gas constant of

air is $0\mathrm{.}287$kPa$*($m$^(3))/($k$)$g$*$K$.$ The constant pressure specific heat of

air is c$\_($P$)=1\mathrm{.}005$k$($J$)/($k$)$g$*\backslash$deg C$.$ The enthalpies of the R$-134$a at the

inlet and the exit states are $324\mathrm{.}66$k$($J$)/($k$)$g and $93\mathrm{.}58$k$($J$)/($k$)$g$.($Round the

final answer to three decimal places.$)$

The mass flow rate of the refrigerant is

k$($g$)/($m$)$in$.$