need help to mark my working and answer and provide explanation if wrong

Image transcription text

A power plant operates with a high-pressure steam of 50 bar and has a boiler exit temperature of 600
"C. The exhaust steam from a turbine has a quality of 95%, is then condensed into saturated liquid
water at 10 kPa, and finally pumped into the boiler. The efficiency of pump is 0.80. Using st... 

 

Image transcription text

Hoz 3664.5 KZlug 532 7. 25 78 KJ/K.kq = Sa Ha ": Qar = 7. 2578- 0-6493 2 0. $8 09 4. 1511 -
0.6493 1 14" = 1:4909x [ 2584.8 - 191. 832] + 191-832 - 2299. 48499 17 / kg We = 2299, 8499 -
3664. 5 = - 1364. 6500 1x] /lag Ha = 0.95 [ 2584 . 8 - 191 . 832 ] + 191. 832 = 2465 . 1516 6 ... 

Image transcription text

AH,2 = 5. 0399 4 0.4 = 6. 299875 k]/kg 3 3 ) 21 2 4' 4 Temperature after adiabatic compression -
temperature after condenser - 45. 83 'L sat . Water at Lokpa and 45.832 Hi : 191 832 H2 : ( 91 832 + 6 .
299875 = 198 . 131 9 1 7/ kg Hoz 3664.5 KZlug H2-73 - 3664.5 - 198-1319 = 3466. 3681k] / kg

 
 
 

 
 

 
 

A power plant operates with a high-pressure steam of 50 bar and has a boiler exit temperature of 600 C. The exhaust steam from a turbine has a quality of 95%, is then condensed into saturated liquid water at 10 kPa, and finally pumped into the boiler. The efficiency of pump is 0.80. Using steam table and/or Mollier diagram, estimate: (1) The efficiency of the turbine. Sketch the expansion process of the turbine in Mollier diagram below. (2) The work supplied into the pump. (3) The amount of heat transfer in the boiler. (4) The amount of heat transfer in the condenser. Enthalpy -h - (kJ/kg) 3000 2500 3500 2000 5 5.5 4000 500 bar 2.85 800 C 750C 700 650C 600 C 650C 500C 450C 4000 350C 3000 250 C 200C A 150C 100% 50% 0.05 0.03 0.02 X1.00 0.01 bar 0.1 95 0.90 6.75 6.5 8.80 8 7 7.5 engineeringtoolbox.com 8.5 9 Entropy s (kJ/K kg)