FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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The condensing pressure for a Rankine Engine is 1.6 bar. 200°C and the steam at the beginning of expansion is at 3.75 Mpa, 400°C. Calculate the efficiency of cycle and engine using mollier chart.
Can you show me the detailed step by step solution?
Saturation: Pressures
Specifie Volume
Sa
Internal Energy
Sal
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01 1.0002 206 136
1.89 1.0001 181 255
3.77 1.0001 159 675
5.45- 1.0001 142 789
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7.90 23700 2377.9
15.81 2364.7 23806
22.88 23600 2382.9
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7.91 24969 2504 8
15.81 2492.5 2508.3
22.89 2488 5 2511.4
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0288 9.0775 9,1064
0575 8.9999 9.0573
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6.98 1.0002 129 208
8.37 1.0002 118 042
9.66 LO003 108 696
10.86
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29.30 2355.7 2385.0
35.17 23518 2386.9
40.58 2348.1 2388.7
45.60 2344.7 23903
50.31 23416 2391.9
29.30 24849 2514.2
35.17 2481.6 2516.8
40.58 2478.6 2519.1
45.60 2475.7 25213
503I 2473.1 2523.4
1059.R8697 8.9756
1268 8.8140 8.9408
1460 8.7631 8.9091
1637 8.7162 8.8799
1802 8.6727 8.8529
1.0004 100 755
1.0005 93 922
54.71 2338.6 2393.3
58.87 2335.8 2394.7
62.80 2333.2 2396.0
66.53 2330.7 23972
70.09…
A reheat cycle with two stages of reheating is executed with steam expanding initially from 25 mPa and 600 C. The two reheater pressures are 4 and 1 mPa and the steam leaves each reheater at 600 C. Condesation occurs at 40 C.
Find QA,wNet,Cycle efficiency,Ec and engine efficiency
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- A reheat cycle with two stages of reheating is executed, with steam expanding initially from 90 bar and 530°C. The two reheater pressures are 10 bar and 0.6 bar, and the steam leaves each reheater at 480°C. Condensation occurs at 0.03 bar. For an ideal cycle, find the e in %.arrow_forwardA 300 MW steam power plant, according to the simple ideal Rankine cycle references Water vapor enters the turbine at a pressure of 10 MPa and a temperature of 500°C; 10 KPA expands to condenser pressure.Isanthropic of turbine and pumpaccording to the efficiency of 85%, the degree of dryness of steam at the turbine output, find the thermal efficiency of the cycle and the mass flow of water vapor circulating in the cycle.arrow_forwardSOLVE 4 KNLYarrow_forward
- When a steam boiler generates saturated steam at 2.5 mpa and the condenser pressure is 20 kpa, what is the Rankine cycle efficiency?Show complete step-by-step process and solution.arrow_forwardsolve for number 4arrow_forward0.2 m'af an ideal gas at 200 "K and 2 har is cumpressed at constant volume to 4 har by heat addition. Then it is compressed adiabatically to 8 har, finally it expands isothermally to the initial point.Assume ep= 14.3 kkg K and ev= 10.2 kIkg K. 1- Draw pv diagram of the cycle. 2. Find the heat added of the constant vuhume proces. 3. Find the work of the adiabatic proces 4 Find the heat rejected and work of the isothermal process.arrow_forward
- PLEASE SHOW COMPLETE SOLUTION (DRAW THE TS DIAGRAM)arrow_forwardin an absorption type refrigerator, the heat is supplied to NH, generator by condensing steam at I bar saturated. The temperature to be maintained in the refrigerator is -5°C. The temperature of the atmosphere is 27°C. Find max. COP of the refrigerator. If the refrigerator load is 30 Tons and actual COP is 80% of max. COP, find inass of steam required. Assume latent heat of steam at one bar 2250 kJ/kg.arrow_forwardrefer to the table below. Apply interpolation if necessaryarrow_forward
- 1.Give the TS and PV diagrams of Regenerative Rankine Cyclearrow_forwardExample 4.5: Stem expands in a turbine from 25 bar and 300°C to a condenser pressare of 20 KPa. Evaluate the Rankine cycle efficiency. What is the efficiency if the initial tempprature of steam is 500°C instead of 300°C ? Now if the boiler pressure is increased to 60 bar maintaining the steam temperature at turbine inlet at 500°C, calculate the efficiency. Assume the condenser pressure to rmain constant in all the cases. n-25 bararrow_forwardA reheat cycle with two stages of reheating is executed, with steam expanding initially from90 bar and 530 ̊C. The two reheater pressure are 10 bar and 0.6 bar, and the steame leaveseach reheater at 480 ̊C. Condensation occurs at 0.04 bar. For an ideal cycle, find (a) QA and e. (b) For the engine, ignore the pressure drop through the reheaters, let thee engineoperate through the same states and compute W and e. (c) What is the steam flowrate for an engine output of 20,000kW?arrow_forward
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