Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation
Patent
1997-09-29
1998-12-01
Kamen, Noah P.
Power plants
Motive fluid energized by externally applied heat
Process of power production or system operation
423237, F01K 2506
Patent
active
058423451
ABSTRACT:
Work is recovered from a first process stream in a high temperature range by heating and vaporizing a condensate-containing mixed component working fluid, expanding the vapor in an expansion turbine to generate work, and condensing the turbine exhaust by indirect heat exchange with a second process stream in a low temperature range to provide the condensate-containing mixed component working fluid. The composition of the working fluid is changed in response to a change in the high temperature range, a change in the low temperature range, or changes in both temperature ranges in order to maintain the efficiency of the work recovery step. The working fluid can be a mixture of ammonia and water. The first and second process streams can be process streams in a combined cycle power generation system or an ammonia synthesis plant.
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Air Products and Chemicals Inc.
Fernbacher John M.
Kamen Noah P.
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