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Analysis of Rankine Cycle with Multiple OFWHs

Analysis of Rankine Cycle with Multiple OFWHs. P M V Subbarao Professor Mechanical Engineering Department I I T Delhi. Translation of an Engineering solution into Mathematical Model ..…. Analysis of Regeneration through OFWH. Workoutput of bleed Steam. h5-h6. Progress in Rankine Cycle.

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Analysis of Rankine Cycle with Multiple OFWHs

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  1. Analysis of Rankine Cycle with Multiple OFWHs P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Translation of an Engineering solution into Mathematical Model ..…..

  2. Analysis of Regeneration through OFWH

  3. Workoutput of bleed Steam h5-h6

  4. Progress in Rankine Cycle

  5. Open (Direct Contact) Feed Water Heater

  6. Closed Feed Water Heater (Pumped Condensate)

  7. Closed Feed Water Heater (Throttled Condensate)

  8. Closed Feed Water Heater (Expanded Condensate)

  9. Thermodynamic Analysis of A Power Plant

  10. A MATHEMATICAL MODEL A Turbine B SG Yj-11,hbj-1 yj, hbj Yj-2,hbj-2 C OFWH OFWH OFWH C 1- yj hf (j-1) 1 ,hf (j) 1- yj –yj-1 hf (j-2) 1- yj –yj-1- yj-2 hf (j-3) n number of OFWHs require n+1 no of Pumps…..

  11. ANALYSIS OF ‘ith’ FEED WATER HEATER Mass entering the turbine is STEAM IN STEAM TURBINE STEAM OUT • Mass of steam leaving the turbine is y(i-1) hb(i-1) yi, hbi y1, hb1 mie , hfi mi,i, hf(i-1)

  12. OPTIMIZATION METHODOLOGY The power developed by the bleed steam of ith heater before it is being extracted is given by hs TURBINE yi hbj

  13. OPTIMIZATION METHODOLOGY (Contd..) The work done by the all the feed water heaters is given by:

  14. ANALYSIS OF ‘ith’ FEED WATER HEATER yi , hbi ith heater hfi h f i-1 Mass balance of the heater at inlet and exit is given by:

  15. Energy balance of the feed heater gives: yi , hbi ith heater hfi h f i-1

  16. Neglecting pump work

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