Regenerative Rankine Cycle P M V Subbarao Professor
Regenerative Rankine Cycle P M V Subbarao Professor Mechanical Engineering Department Carnotization of Practicable Cycles for PGS…. .
h mfuel n o i t ra m c a e t al S i t i r rc upe S Vapo ur Carnotization of Rankine Cyce ne e G r u o ap V + d i u q i L L id u iq s
Reassessment Thru Carnot Model 4500 C 3110 C ~2500 C
Diagnosis of Heat Addition Rankine Cycle
Diminishing Local Work Conversion
Diminishing Marginal Work Generation h 3 wturbine
Diminishing Local Efficiency
What about a Non-Isentropic Expansion !!! 4 A Macro Carnot Cycle !!!! 3 T 2 1 5 6 7
Ideal Regenerative Cycle 4 5 6 7 3 2 1
Regenerative Turbine 4 T 7 Regenerative heat transfer. Change in kinetic and potential energies are negligible Assuming a single fluid entering and leaving…
Analysis of Regeneration Cycle 4 3 T 5 2 6 1 7 s
Regeneration Cycle with Bleeding Turbine & Mixer (Open Feed Water Heater)
Analysis of mixing in OFWH Constant pressure mixing process Constraint: Maximum allowable value of h 3 is hsat @ p 3 Conservation of energy:
Analysis of Regeneration through OFWH
Cost to Benefit Ratio for Regenerative Rankine Cycle
Performance of OFWH Cycle ~ 12 MPa hreg pbleed, MPa
Clues for Optimal Location of FWH
Comparison of Performance of Bleed & Condensing Steams hcond hbleed Pregen, MPa
Gross Work output of bleed Steam wbleed ~ 12 MPa pregen, MPa
Fractional specific output Workoutput of bleed Steam Fraction of Bleed Steam
wbleed Workoutput of bleed Steam
Progress in Rankine Cycle 1907 1919 1938 1950 1958 1959 1966 1973 1975 MW 5 20 30 60 120 200 500 660 1300 p, MPa 1. 3 1. 4 4. 1 6. 2 10. 3 16. 2 15. 9 24. 1 Th o. C 260 316 454 482 538 566 565 538 T r o. C -- -- 538 566 565 538 FHW -- 2 3 4 6 6 7 8 8 5. 1 4. 5 3. 4 3. 7 4. 4 5. 1 ~17 27. 6 30. 5 35. 6 37. 5 39. 8 39. 5 40 Year Pc, k. Pa 13. 5 h, % --
Thermodynamic Analysis of A Power Plant
Block Diagram of A Large Steam Turbine Main Steam Reheat Steam HP IP LP Steam for Reheating OFWH 4 CFWH 6 CFWH 5 LP CFWH 3 CFWH 2 CFWH 1 Condenser
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