Optimization of a dual cycle cogeneration system based on a new exergetic performance criterion

Ust Y., Sahin B., Kodal A.

APPLIED ENERGY, vol.84, no.11, pp.1079-1091, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 84 Issue: 11
  • Publication Date: 2007
  • Doi Number: 10.1016/j.apenergy.2007.04.004
  • Journal Name: APPLIED ENERGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1079-1091
  • Yıldız Technical University Affiliated: Yes


An ecological performance analysis for an irreversible dual-cycle cogeneration system has been performed. The objective function is called as the exergetic-performance coefficient (EPC) and defined as the ratio of total exergy output to the loss rate of availability. The general and optimal performances of the irreversible dual-cycle cogeneration system, having a finite-rate of heat transfer, heat leak and internal irreversibilities based on the EPC objective function have been investigated. Comparisons with respect to the optimal total-exergy output are also provided in order to establish the utility of the new exergetic-performance coefficient. The analyzed results of the dual-cycle cogeneration system considered, working at maximum EPC conditions, have a significant advantage in terms of entropy-generation rate and can be used for the selection of optimal design parameters. (c) 2007 Elsevier Ltd. All rights reserved.