Chapter 8, Problem 8.32P

Water is the working fluid in a regenerative Rankine cycle with one closed feedwater heater. Steam enters the turbine at 1400 lbf/in.2 and 1000°F and expands to 120 lbf/in.2, where some of the steam is extracted and diverted to the closed feedwater heater. The remaining steam expands through the second-stage turbine to the condenser pressure of 5 lbf/in.2 Each turbine stage and the pump have isentropic efficiencies of 80%. Flow through the condenser, closed feedwater heater, and steam generator is at constant pressure. Condensate exiting the feedwater heater as saturated liquid at 120 lbf/in.2 undergoes a throttling process as it passes through a trap into the condenser. The feedwater leaves the heater at 1400 lbf/in.2 and a temperature equal to the saturation temperature at 120 lbf/in.2 The net power output of the cycle is 1 x 109 Btu/h.Determine for the cycle:(a) the mass flow rate of steam entering the first stage of the turbine, in lb/h.(b) the rate of heat transfer, in Btu/h, to…

Water is the working fluid in a regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1600 lbf/in² and 1100°F and expands to 120 lb/in.2, where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lb/in.2 The remaining steam expands through the second-stage turbine to the condenser pressure of 2 lb-/in.2 Each turbine stage and both pumps have isentropic efficiencies of 85%. Flow through the condenser, open feedwater heater, and steam generator is at constant pressure. Saturated liquid exits the open feedwater heater at 120 lbf/in.2 The mass flow rate of steam entering the first stage of the turbine is 2.42x106 lb/h. Determine the net power output of the cycle, in Btu/hr. W cycle = i Btu/h

Water is the working fluid in a regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1800 lb-/in² and 1200°F and expands to 120 lb/in.², where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lb-/in.² The remaining steam expands through the second-stage turbine to the condenser pressure of 2 lb-/in.² Each turbine stage and both pumps have isentropic efficiencies of 85%. Flow through the condenser, open feedwater heater, and steam generator is at constant pressure. Saturated liquid exits the open feedwater heater at 120 lb/in.² The mass flow rate of steam entering the first stage of the turbine is 2.42x106 lb/h. Step 1 * Your answer is incorrect. Determine the net power output of the cycle, in Btu/hr. W cycle Hint Save for Later 1203000000 Btu/h Attempts: 3 of 4 used Submit Answer Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above. Step 3 The…