Exergy analysis of compression and expansion processes |
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| Affiliation: | 1. Department of Chemical and Biological Engineering, The University of Sheffield, Sheffield S1 4AA, United Kingdom;2. Shell Global Solutions International B.V |
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| Abstract: | The thermodynamics of compression and expansion processes in turbomachinery are examined. Rational efficiencies are defined and their relation to isentropic and polytropic efficiencies are discussed. Multistage turbines with extractions are optimized. This approach yields expressions that are independent of the concept of thermodynamic irreversibility. |
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