Draw the T-S and H-S diagram. 8. A binary-vapour eycle operates on mercury and steam. Saturated mercury vapour at 4.5 bar is suppliedto the mercury turbine, from which it exhaust at 0.04 bar. The mereury condenser generates saturatedsteam at 15 bar which is expanded in a steam turbine to 0.04 bar.(i) Find the overall efficiency of the ceycle.(ii) If 50000 kg/h of steam flows through the steam turbine, what is the flow through the mercuryturbine ?(ii) Assuming that all processes are reversible, what is the useful work done in the binary vapour eyelefor the specified steam flow ?(iv) If the steam leaving the mereury condenser is superheated to a temperature of 300°C in a super-heater located in the mercury boiler, and if the internal efficiencies of the mercury and steam tur-bines are 0.85 and 0.87 respectively, caleulate the overall efficiency of the eycle. The properties ofsaturated mercury are given below :p (bar) tCC)(kJ/ kg)(kJ / kg K)(m'/kg)4.545063.93355.980.13520.539779.9 x1040.0680.04216.929.98329.850.08080.692576.5 x 10-5.178|Ans. (i) 52.94%, (i) 59.35 × 10' kg/h, (iii) 28.49 MW, (iv) 46.2%)

Givenfor Mercury cycleh1=355.98kj/kgs1=0.5397 kj/kgk

8. A binary-vapour cycle operates on mereury and steam. Saturated mercury vapour at 4.5 bar is supplied to the mercury turbine, from which it exhaust at 0.04 bar. The mercury condenser generates saturated steam at 15 bar which is expanded in a steam turbine to 0.04 bar. () Find the overall efficiency of the cycle. (i) If 50000 kg/h of steam flows through the steam turbine, what is the flow through the mercury turbine ? (ii) Assuming that all processes are reversible, what is the useful work done in the binary vapour cycle for the specified steam flow ? (iv) If the steam leaving the mercury condenser is superheated to a temperature of 300°C in a super- heater located in the mercury boiler, and if the internal efficiencies of the mereury and steam tur- bines are 0.85 and 0.87 respectively, caleulate the overall efficiency of the eycle. The properties of saturated mercury are given below : p (bar) tCC) (AJ/ kg) (hJ /hg K) (m'lhg) 450 63. 93 355 98 0 1362 0 6397 799 v10 0068

8. A binary-vapour cycle operates on mereury and steam. Saturated mercury vapour at 4.5 bar is supplied to the mercury turbine, from which it exhaust at 0.04 bar. The mercury condenser generates saturated steam at 15 bar which is expanded in a steam turbine to 0.04 bar. () Find the overall efficiency of the cycle. (i) If 50000 kg/h of steam flows through the steam turbine, what is the flow through the mercury turbine ? (ii) Assuming that all processes are reversible, what is the useful work done in the binary vapour cycle for the specified steam flow ? (iv) If the steam leaving the mercury condenser is superheated to a temperature of 300°C in a super- heater located in the mercury boiler, and if the internal efficiencies of the mereury and steam tur- bines are 0.85 and 0.87 respectively, caleulate the overall efficiency of the eycle. The properties of saturated mercury are given below : p (bar) tCC) (AJ/ kg) (hJ /hg K) (m'lhg) 450 63. 93 355 98 0 1362 0 6397 799 v10 0068

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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