Refrigerant 134a at 10 bars, 38oC flows at 10.0 kg/s through a heat exchanger, leaving at 9.0 bars and 80oC. It exchanges heat with a stream of steam entering at 1 bar and 200oC.
Find:
i) If the steam leaves the heat exchanger as a saturated vapor at 1 bar, determine its mass flow rate (kg/s).
ii) If the refrigerant flow rate is cut to 5.0 kg/s but it still leaves at the same state, and the steam flow rate stays the same, what is the exit temperature of the steam?