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The schematic diagrams of two suggested designs for a boiling water reactor are shown in the figures. One uses a direct cycle and the other a dual cycle. The outlet conditions for both designs are the same. In both designs, steam leaves the steam separator assembly with a quality of 95% to enter the high pressure turbine (HPT) while the saturated liquid with 95 weight percent being recirculated to the reactor. The vapor is expanded successively in the HPT, the intermediate pressure turbine (IPT), and the low pressure turbine (LPT) before entering the condenser being at a 64 mm-Hg. Moisture separators between the HPT and IPT and between the IPT and LPT reduce the steam moisture to 1%; the separated liquid is used to heat the feedwater in an open feedwater heater. The heated condensate and the recirculated water from the steam separator are pumped through the reactor. Assume 100% efficiency in all pumps, and neglect pressure losses in the moisture separators. Take all turbine efficiencies as 75%. In the dual cycle design, an additional steam generator is used. The 6.6 MPa saturated liquid from the steam separator produces saturated steam at 3.4 MPa in the secondary steam generator, its enthalpy being reduced to 1163 kJ/kg. The 3.4 MPa steam is introduced to the HPT at the appropriate stage with perfect mixing. Sketch the T-s diagram for the direct and dual cycles.

The schematic diagrams of two suggested designs for a boiling water reactor are shown in the figures. One uses a direct cycle and the other a dual cycle. The outlet conditions for both designs are the same. In both designs, steam leaves the steam separator assembly with a quality of 95% to enter the high pressure turbine (HPT) while the saturated liquid with 95 weight percent being recirculated to the reactor. The vapor is expanded successively in the HPT, the intermediate pressure turbine (IPT), and the low pressure turbine (LPT) before entering the condenser being at a 64 mm-Hg. Moisture separators between the HPT and IPT and between the IPT and LPT reduce the steam moisture to 1%; the separated liquid is used to heat the feedwater in an open feedwater heater. The heated condensate and the recirculated water from the steam separator are pumped through the reactor. Assume 100% efficiency in all pumps, and neglect pressure losses in the moisture separators. Take all turbine efficiencies as 75%. In the dual cycle design, an additional steam generator is used. The 6.6 MPa saturated liquid from the steam separator produces saturated steam at 3.4 MPa in the secondary steam generator, its enthalpy being reduced to 1163 kJ/kg. The 3.4 MPa steam is introduced to the HPT at the appropriate stage with perfect mixing. Sketch the T-s diagram for the direct and dual cycles.

Refrigeration and Air Conditioning Technology (MindTap Course List)
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter22: Condensers
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44. The schematic diagrams of two suggested designs for a boiling water reactor
are shown in the figures. One uses a direct cycle and the other a dual cycle. The
outlet conditions for both designs are the same. In both designs, steam leaves the
steam separator assembly with a quality of 95% to enter the high pressure turbine
(HPT) while the saturated liquid with 95 weight percent being recirculated to the
reactor. The vapor is expanded successively in the HPT, the intermediate pressure
turbine (IPT), and the low pressure turbine (LPT) before entering the condenser
being at a 64 mm-Hg. Moisture separators between the HPT and IPT and between
the IPT and LPT reduce the steam moisture to 1%; the separated liquid is used to
heat the feedwater in an open feedwater heater. The heated condensate and the recirculated
water from the steam separator are pumped through the reactor. Assume
100% efficiency in all pumps, and neglect pressure losses in the moisture
separators. Take all turbine efficiencies as 75%.

In the dual cycle design, an additional steam generator is used. The 6.6 MPa
saturated liquid from the steam separator produces saturated steam at 3.4 MPa in
the secondary steam generator, its enthalpy being reduced to 1163 kJ/kg. The 3.4
MPa steam is introduced to the HPT at the appropriate stage with perfect mixing.
Sketch the T-s diagram for the direct and dual cycles.

44. The schematic diagrams of two suggested designs for a boiling water reactor are shown in the figures. One uses a direct cycle and the other a dual cycle. The outlet conditions for both designs are the same. In both designs, steam leaves the steam separator assembly with a quality of 95% to enter the high pressure turbine (HPT) while the saturated liquid with 95 weight percent being recirculated to the reactor. The vapor is expanded successively in the HPT, the intermediate pressure turbine (IPT), and the low pressure turbine (LPT) before entering the condenser being at a 64 mm-Hg. Moisture separators between the HPT and IPT and between the IPT and LPT reduce the steam moisture to 1%; the separated liquid is used to heat the feedwater in an open feedwater heater. The heated condensate and the re- circulated water from the steam separator are pumped through the reactor. As- sume 100% efficiency in all pumps, and neglect pressure losses in the moisture separators. Take all turbine efficiencies as 75%. 6.6 MPa, x-95% 3150 kg's Steam HPT IPT LPT Generator Separator m Moisture Oc d Moist. Separator Reactor Sep. Pressure Cooling reducer water 7.1 MPa 6.6 MPa 80 kPa k Feedwater Heater 1,24 MPa %66 - 30 kPa %66 -: 64mm-Hg
Transcribed Image Text:44. The schematic diagrams of two suggested designs for a boiling water reactor are shown in the figures. One uses a direct cycle and the other a dual cycle. The outlet conditions for both designs are the same. In both designs, steam leaves the steam separator assembly with a quality of 95% to enter the high pressure turbine (HPT) while the saturated liquid with 95 weight percent being recirculated to the reactor. The vapor is expanded successively in the HPT, the intermediate pressure turbine (IPT), and the low pressure turbine (LPT) before entering the condenser being at a 64 mm-Hg. Moisture separators between the HPT and IPT and between the IPT and LPT reduce the steam moisture to 1%; the separated liquid is used to heat the feedwater in an open feedwater heater. The heated condensate and the re- circulated water from the steam separator are pumped through the reactor. As- sume 100% efficiency in all pumps, and neglect pressure losses in the moisture separators. Take all turbine efficiencies as 75%. 6.6 MPa, x-95% 3150 kg's Steam HPT IPT LPT Generator Separator m Moisture Oc d Moist. Separator Reactor Sep. Pressure Cooling reducer water 7.1 MPa 6.6 MPa 80 kPa k Feedwater Heater 1,24 MPa %66 - 30 kPa %66 -: 64mm-Hg
In the dual cycle design, an additional steam generator is used. The 6.6 MPa saturated liquid from the steam separator produces saturated steam at 3.4 MPa in the secondary steam generator, its enthalpy being reduced to 1163 kJ/kg. The 3.4 MPa steam is introduced to the HPT at the appropriate stage with perfect mixing. Sketch the T-s diagram for the direct and dual cycles. 6.6 MPa, x-95% 3150 ky/s Steam HPT IPT LPT Generator Separator m 수f Maisture De d Moist. Separator Reactor Sep. Socondary Steam Pressure Generator Cooling reducer water 34 MPa P- 80 kPa Feedwater Heater 6.6 MPa k 64 mm-Hg %66 TI 08 %66 - 125 MPa AN 9'9 7.1 MPa
Transcribed Image Text:In the dual cycle design, an additional steam generator is used. The 6.6 MPa saturated liquid from the steam separator produces saturated steam at 3.4 MPa in the secondary steam generator, its enthalpy being reduced to 1163 kJ/kg. The 3.4 MPa steam is introduced to the HPT at the appropriate stage with perfect mixing. Sketch the T-s diagram for the direct and dual cycles. 6.6 MPa, x-95% 3150 ky/s Steam HPT IPT LPT Generator Separator m 수f Maisture De d Moist. Separator Reactor Sep. Socondary Steam Pressure Generator Cooling reducer water 34 MPa P- 80 kPa Feedwater Heater 6.6 MPa k 64 mm-Hg %66 TI 08 %66 - 125 MPa AN 9'9 7.1 MPa
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