Q12/Consider a reheat-regenerative Rankine power cycle (shown in Fig Q1) with two F.W.Hs, a closed F.W.H and an open F.W.H. Steam enters the H.P turbine at 8.0 MPa, 480 °C and expands to 0.7 MPa. The steam is reheated to 440 °C before entering the L.P turbine, where it expands to the condenser pressure of 0.008 MPa. Steam is extracted from the H.P turbine at 2 MPa and fed to the closed F.W.H at y'=0.169. Feed water leaves the closed heater at 205°C and 8.0 MPa, and condensate exits as saturated liquid at 2 MPa. The condensate is trapped into the open F.W.H. Steam extracted from the L.P turbine at 0.3 MPa is also fed into the open F.W.H, which operates at 0.3 MPa. The stream exiting the open F.W.H is saturated liquid at 0.3 MPa. The net power output of the cycle is 100 MW. Determine: (a) The performance characteristics (nth, HR,ssc). (b) The mass flow rate of the steam entering the first turbine, in kg/h. 71 10 11 8.0 MPa 12 20 MPa 13 0.7 MPa 3 0.3 MPa 0.008 MPa T₁ = 480°C T₁=440°C

Q12/Consider a reheat-regenerative Rankine power cycle (shown in Fig Q1) with two F.W.Hs, a closed F.W.H and an open F.W.H. Steam enters the H.P turbine at 8.0 MPa, 480 °C and expands to 0.7 MPa. The steam is reheated to 440 °C before entering the L.P turbine, where it expands to the condenser pressure of 0.008 MPa. Steam is extracted from the H.P turbine at 2 MPa and fed to the closed F.W.H at y'=0.169. Feed water leaves the closed heater at 205°C and 8.0 MPa, and condensate exits as saturated liquid at 2 MPa. The condensate is trapped into the open F.W.H. Steam extracted from the L.P turbine at 0.3 MPa is also fed into the open F.W.H, which operates at 0.3 MPa. The stream exiting the open F.W.H is saturated liquid at 0.3 MPa. The net power output of the cycle is 100 MW. Determine: (a) The performance characteristics (nth, HR,ssc). (b) The mass flow rate of the steam entering the first turbine, in kg/h. 71 10 11 8.0 MPa 12 20 MPa 13 0.7 MPa 3 0.3 MPa 0.008 MPa T₁ = 480°C T₁=440°C

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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