Title: Performance assessment of a modified power generating cycle based on effective ecological power density and performance coefficient

Authors: Guven Gonca; Bahri Sahin; Mehmet Cakir

Addresses: Department of Naval Architecture and Marine Engineering, Yıldız Technical University, Besiktas, 34349, Istanbul, Turkey ' Department of Naval Architecture and Marine Engineering, Yıldız Technical University, Besiktas, 34349, Istanbul, Turkey ' Department of Marine Engineering Operations, Yildiz Technical University, Besiktas, 34349, Istanbul, Turkey

Abstract: Thermo-ecological performance optimisation and analyses of an engine running with a modified power generating cycle are carried out based on effective ecological power density (EFECPOD) and effective ecological performance coefficient (EFECPEC). They provide a unique value for combined characteristics of thermal efficiency, power, cycle volume, entropy generation and maximum combustion temperature. The impacts of design and operational parameters such as compression ratio, equivalence ratio, engine speed, exhaust temperature ratio, pressure ratio, cycle pressure ratio and cycle temperature ratio on maximum EFECPOD and EFECPEC have been examined for modified power generating cycle.

Keywords: internal combustion engine cycles; performance characteristics; EFECPOD; thermo-ecology.

DOI: 10.1504/IJEX.2020.109985

International Journal of Exergy, 2020 Vol.33 No.2, pp.153 - 164

Received: 25 Oct 2019
Accepted: 22 Mar 2020
Published online: 30 Sep 2020 *

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