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Reheat Rankine Cycle

Reheat Rankine Cycle. P M V Subbarao Professor Mechanical Engineering Department. Means to Eliminate Hurdles while Adopting high Live Steam Pressures ……. Structure of Modern Rankine Cycle Power Plant. Historical Progress in Rankine Cycle.

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Reheat Rankine Cycle

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  1. Reheat Rankine Cycle P M V Subbarao Professor Mechanical Engineering Department Means to Eliminate Hurdles while Adopting high Live Steam Pressures ……

  2. Structure of Modern Rankine Cycle Power Plant

  3. Historical Progress in Rankine Cycle

  4. Blade Damage in LP Stage of Steam Turbine due to Erosion

  5. Ill-effects of High Wetness • A secondary limiting effect, was characterized by Baumann as early as 1910. • The efficiency, of wet stages of the LP decreases approximately 1% for every 1% increase in wetness in the stage. • The level of allowable moisture in the last stages of the LP turbine has been a practical limit on the usable temperatures and pressures of steam since 1958 turbine designs. • Severe erosion was found in LP blades of early turbine designs and lead to the imposition of a limitation of about 12% on exit wetness.

  6. Enhanced Irreversibility due to Wetness Baumann Rule Field Test Results

  7. Modern Wetness Loss Region

  8. Few Low Temperature Resources and Their Capacities

  9. Ill-Effects of High Pressure Cycles ???? Tmax = 546C &Tmin=40 C Why should an isentropic expansion lead to condensation??? This demands high Live steam temperature x Pressure, MPa

  10. Characterization of Vapour Domes for Engineering of Rankine Cycle

  11. Working Fluids for Low Temperature Resources Working Fluids must be selected in accordance to the heat source temperature level (Tcr < Tin source)

  12. Family of Rankine Cycles

  13. World Installed Capacity of ORC Plants • Total installed capacity : 2701 MW, in 1754 power plants

  14. Subcritical Vs Supercritical Rankine Cycle Wet Fluids

  15. Historical Progress in Rankine Cycle

  16. Reheating of Steam to Enhance Quality at the Turbine Exit Single Turbine drum

  17. Cost to Benefit Ratio of Reheat Cycle

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