Organic motive fluid based waste heat recovery system
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United States of America Patent
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Jun 17, 2014
Grant Date -
Oct 27, 2011
app pub date -
Apr 22, 2010
filing date -
Apr 22, 2010
priority date (Note) -
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Abstract
A waste heat recovery system includes a closed fluid circuit through which an organic motive fluid flows, and a heat exchanger for transferring heat from waste heat gases to the motive fluid. A first flashing unit flashes the motive fluid which exits the heat exchanger into a high pressure flashed vapor portion. Another flashing unit flashes liquid non-flashed motive fluid, producing a low pressure flashed vapor portion. A high pressure turbine module receives the high pressure flashed vapor portion to produce power, and a low pressure turbine module receives a combined flow of motive fluid vapor comprising the low pressure flashed vapor portion and discharge vapor from the high pressure turbine module whereby additional power is produced.
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