7. In a heat-engine cycle, steam changes from a saturated liquid to a saturated vapor at a

constant temperature of 270 °C. The maximum possible efficiency of the cycle is 40 %. Determine

(a) the temperature at which heat is rejected, and (b) the net power output in kW if the mass

flow rate of steam is 2 kg/s. (Watch "Carnot Flow-Example 1")