7. A superheat steam Rankine cycle has turbine inlet conditions of 17.5 Mpa and 530℃ expands in a turbine to 0.007 Mpa. The turbine and pumps polytropic efficiencies are 0.9 and 0.7 respectively, pressure losses between pump and turbine inlet are 1.5 Mpa. What should be the pump work in KJ/kg?
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