• megawatt-scale application of thermoelectric devices in thermal power plants

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 941
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     despite the recent investment in renewable and sustainable energy sources, over 95% of the uk’s electrical energy generation relies on the use of thermal power plants utilizing the rankine cycle. advanced supercritical rankine cycle power plants typically have a steam temperature in excess of 600°c at a pressure of 290 bar and yet still have an overall efficiency below 50%, with much of this wasted energy being rejected to the environment through the condenser/cooling tower. this paper examines the opportunity for large-scale application of thermoelectric heat pumps to modify the rankine cycle in such plants by preheating the boiler feedwater using energy recovered from the condenser system at a rate of approximately 1 mwth per °c temperature rise. a derivation of the improved process cycle efficiency and breakeven coefficient of performance required for economic operation is presented for a typical supercritical 600-mwe installation.

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