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Advanced Power Generation Using Multi-Component Working Fluids in Organic Rankine Cycles

This paper discusses innovative approaches in power generation cycles, particularly the Rankine cycle utilizing organic mixtures. Focusing on the integration of organic working fluids like siloxanes and their behavior in various thermodynamic contexts, it explores the benefits of superheat and supercritical cycles. The study includes the thermodynamic performance of mixtures (e.g., R22/R114, MM/ND2M) and analyzes the efficiency of Kalina cycles, emphasizing exergy destruction in ammonia-water cycles. Customized solutions are proposed for optimizing thermal efficiency.

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Advanced Power Generation Using Multi-Component Working Fluids in Organic Rankine Cycles

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  1. Advanced Power Generation Cycles Using Multi Component Working Fluids P M V Subbarao Professor Mechanical Engineering Department Indian Institute of Technology Delhi Customized Solutions for Maximum Benefits….

  2. Rankine Cycle with Organic Mixtures : Component Layout

  3. ORC with mixtures

  4. T-s plane for mixtures of R22/R114

  5. Mixtures of Organic Working Fluids • A siloxane is any chemical compound composed of units of the form R2SiO, where R is a hydrogen atom or a hydrocarbon group. • They belong to the wider class of organosilicon compounds. • Hexamethyldisiloxane is a chemical compound with the formula O[Si(CH3)3]2.

  6. saturation curves in the T-x plane for the MM/MD2M mixture xMM

  7. T-s diagram for MM (50%)/MD2M (50%)

  8. Simple Rankine Cycle with Organic Mixtures

  9. T-s plane for mixtures of MM/ND2M

  10. Superheat Cycles • For heat exploitation at comparatively high temperature, a saturated cycle requires a working fluid with a very high critical temperature which implies an unrealistically low condensation pressure.

  11. Supercritical cycles

  12. Kalina Cycle with Subcooler

  13. Effect of turbine inlet pressure on first law efficiency

  14. The Superheat Kalina Cycle

  15. Comparison of Exergy destruction in various components of the Ammonia water cycles

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