Chapter 8, Problem 8.13P

Water is the working fluid in a Rankine cycle. Steam exits the steam generator at 1500 Ibf/in.? and 1100°F. Due to heat transfer and frictional effects in the line connecting the steam generator and turbine, the pressure and temperature at the turbine inlet are reduced to 1400 Ibf/in.? and 1000°F, respectively. Both the turbine and pump have isentropic efficiencies of 90%. Pressure at the condenser inlet is 2 lbf/ in.?, but due to frictional effects the condensate exits the condenser at a pressure of 1.5 Ibf/in.² and a temperature of 110°F. The condensate is pumped to 1600 Ibf/in.2 before entering the steam generator. The net power output of the cycle is 1x 10° Btu/h. Cooling water experiences a temperature increase from 60°F to 76°F, with negligible pressure drop, as it passes through the condenser. Determine for the cycle: (a) the mass flow rate of steam, in Ib/h. (b) the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. (c) the percent…

Water is the working fluid in a Rankine cycle. Steam exits the steam generator at 1500 lbf/in.? and 1100°F. Due to heat transfer and frictional effects in the line connecting the steam generator and turbine, the pressure and temperature at the turbine inlet are reduced to 1400 Ibf/in.? and 1000°F, respectively. Both the turbine and pump have isentropic efficiencies of 85%. Pressure at the condenser inlet is 2 Ibf/ in.?, but due to frictional effects the condensate exits the condenser at a pressure of 1.5 lbf/in.? and a temperature of 110°F. The condensate is pumped to 1600 lbf/in.² before entering the steam generator. The net power output of the cycle is 5.5 x 10³ Btu/h. Cooling water experiences a temperature increase from 60°F to 76°F, with negligible pressure drop, as it passes through the condenser. Determine for the cycle: (a) the mass flow rate of steam, in Ib/h. (b) the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. (c) the percent…

Water is the working fuld in an Ideal Rankine cycle. Steam enters the turbine at 1400 bin² and 1000°F. The condenser pressure is 2 Iben. The net power output of the cycle is 250 MW. Cooling water experiences a temperature Increase from 60°F to 76*F, with negligible pressure drop, as it passes through the condenser. Step 1 Determine the mass flow rate of steam, In lb/h. Hint Step 2 Your answer is correct Step 3 Determine the rate of heat transfer, in Btu/h, to the working fuld passing through the steam generator. Hint Your answer is correct. 1536198.045 Step 4 2144195010 Your answer is correct Hint Determine the thermal efficiency of the cycle. 39.78 Stu/h % Determine the mass flow rate of cooling water. In lb/h 1b/h Attempts: 3 of 4 used Attempts: 1 of 4 used Attempts: 1 of 4 used