Current Attempt in Progress

Steamenters a counterflow heat exchanger operating at steady state at $0\mathrm{.}06$ MPa with a quality of $0\mathrm{.}9$ and exits at the same pressure

as saturated liquid. The steam mass flow rate is $1\mathrm{.}5k\frac{g}{m}in.$ A separate stream of air with a mass flow rate of $100k\frac{g}{m}in$ enters at $30C$

and exits at $60C.$ The ideal gas model with $c_p=1005k\frac{J}{k}g*K$ can be assumed for air. Kinetic and potential energy effects are

negligible.

Determine the temperature of the entering steam, in $C$ :

For the overall heat exchanger as the control volume, what is the rate of heat transfer, in kW $.$

Step $1$

Determine the temperature of the entering stearn, in $C.$

$T_1=$

$C$

Hint