An engine that uses the Rankine cycle to operate. Know that the steam leaves the boiler at 20 bar and 350oC. The turbine efficiency is 75% and the steam outlet pressure is 1 bar. Assume there is no pressure change in the boiler and condenser and that the water leaving the condenser is saturated water. a. Determine working temperature of condenser, find cycle efficiency Carnot operates within the range of boiler and condenser temperatures b. Determine the real efficiency of the Rankine cycle and compare it with the Carnot cycle. Explain the if there is a difference

3 (a) A simple Rankine cycle uses water as the working fluid (Figure Q3). IA 9 in 4s 4 gout Figure Q3. Rankine Cycle The boiler operates at 7,000 kPa and the condenser at 100 kPa. At the entrance to the turbine, the temperature is 450 °C. The isentropic efficiency of the turbine is 90%, pressure and pump losses are negligible, and the water leaving the condenser is subcooled by 9.6 °C. The boiler is sized for a mass flow rate of 20 kg/s. Determine, (i) The rate at which heat is added in the boiler, (ii) The power required to operate the pumps, (iii) The net power produced by the cycle, (iv) The thermal efficiency. (b) After a long walk in the 14 °C outdoors, a person wearing glasses enters a room at 25°C and 60% relative humidity. (i) What is the difference between specific and relative humidity? (ii) Please explain whether the glasses will become fogged or not and why. An

A steam turbine is supplied with steam at a pressure of 100 bar, and exhausts to a condenser at a pressure of 0.10 bar. The turbine efficiency is at 70%. Detemine the Rankine cycle efficiency when the initial steam condition is superheated to 400°C.

In a steam power cycle, the steam supply is at 15 bar and in a dry and saturated condition.The condenser pressure is 0.4 bar. Calculate the Carnot and Rankine efficiencies of the cycle.Ignore the work of the pump.