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Abstract：
Organic Rankine cycles for low grade waste heat recovery are described with different working fluids. The effects of the thermodynamic parameters on the ORC performance are examined, and the thermodynamic parameters of the ORC for each working fluid are optimized with exergy efficiency as an objective function by means of the genetic algorithm. The optimum performance of cycles with different working fluids was compared and analyzed under the same waste heat condition. The results show that the cycles with organic working fluids are much better than the cycle with water in converting low grade waste heat to useful work. The cycle with R236EA has the highest exergy efficiency, and adding an internal heat exchanger into the ORC system could not improve the performance under the given waste heat condition. In addition, for the working fluids with non-positive saturation vapor curve slope, the cycle has the best performance property with saturated vapor at the turbine inlet. (c) 2008 Published by Elsevier Ltd.
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ENERGY CONVERSION AND MANAGEMENT
ISSN： 0196-8904
Year： 2009
Issue： 3
Volume： 50
Page： 576-582
1 . 9 4 4
JCR@2009
9 . 7 0 9
JCR@2020
ESI Discipline： ENGINEERING;
JCR Journal Grade：2
CAS Journal Grade：1
Cited Count：
WoS CC Cited Count： 567
SCOPUS Cited Count： 736
ESI Highly Cited Papers on the List： 31 Unfold All
WanFang Cited Count：
Chinese Cited Count：
30 Days PV： 8
