A steam power plant is designed based on the Rankine cycle (Figure 1). The steam emerges from the boiler at 50 bar and 500 °C. The condenser pressure operates at 0.1 bar. You can assume that the condensate (stream 4) contains only saturated liquid. The isentropic efficiency of the turbine is 80%.
The pump increases the internal energy of the stream by 10%. The flow of water in this cycle is 10kgs

a)What are the specific enthalpies of streams 1, 2, 3 and 4? [4 marks]
b) What is the actual duty (in kW) of the turbine? [1 mark]
c) What is the quality of steam after the expansion process? [1 mark]
d) Label streams 2 and 3 on the Mollier diagram provided. [2 marks]
e) What is the duty (kW) of the boiler? [1 mark]