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Part-load optima in bottoming-cycles

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  • Woodward, John B.

Abstract

It is assumed that optimal steam conditions for a Rankine bottoming-cycle are those that produce the greatest power output. It is then demonstrated that optimal steam conditions are a function of steam-generator pinch-temperature difference, leading to the assumption that a designer of bottoming-cycles may begin with a chosen pinch-temperature difference. Further demonstration is given that the pinch-temperature difference must change in response to primary engine load changes, so that such load changes upset the optimal bottoming-cycle conditions found at primary engine-rated power. The consequences to the bottoming-cycle in terms of lost power capability are demonstrated and are found to be of small magnitude.

Suggested Citation

  • Woodward, John B., 1987. "Part-load optima in bottoming-cycles," Energy, Elsevier, vol. 12(7), pages 523-530.
    • Handle: RePEc:eee:energy:v:12:y:1987:i:7:p:523-530
    DOI: 10.1016/0360-5442(87)90093-4
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