Comment on 'The effects of heat transfer on the exergy efficiency of an air-standard Otto cycle' by Hakan Özcan, Heat and Mass Transfer (2011) 47:571–577

Autor: A. Mousapour, Mohammad Mehdi Rashidi, A. Hajipour
Rok vydání: 2014
Předmět:
Zdroj: Heat and Mass Transfer. 50:1177-1183
ISSN: 1432-1181
0947-7411
Popis: In this letter, it is shown that the applied relations in the paper by Hakan Ozcan [H. Ozcan, The effects of heat transfer on the exergy efficiency of an air-standard Otto cycle, Heat and Mass Transfer (2011) 47:571–577] are erroneous and thus the reported results are invalid. These incorrect relations [Eqs. (8), (9), (10), (14) and (16) of HO2011] are replaced by correct ones. Moreover, the obtained results (graphs and tables) are modified based on the correct relations. Finally, to achieve more realistic results, the internal irreversibility described by using the compression and expansion efficiencies is added to the analysis.
Databáze: OpenAIRE
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