Title: Work density analysis and thermoeconomic optimisation of modified Carnot cycle engine

Authors: Asim Sinan Karakurt; Guven Gonca; Bahri Sahin

Addresses: Naval Architecture and Marine Engineering Department, Yildiz Technical University, 34349 Besiktas/Istanbul, Turkey ' Naval Architecture and Marine Engineering Department, Yildiz Technical University, 34349 Besiktas/Istanbul, Turkey ' Department of Aeronautical Engineering, Istanbul Gelisim University, 34310 Avcilar/Istanbul, Turkey

Abstract: The modified Carnot cycle, a novel thermodynamic cycle, is introduced, and the cycle's performance is analysed in order to more accurately depict the performance and design parameters of actual heat engines. Work output, thermal efficiency, and work density are all considered in conjunction during the performance analysis. In terms of maximum pressure, maximum volume, work density, thermal efficiency, and size, the results demonstrate that the modified cycle performs better than the classic Carnot cycle at simulating the real heat engine. In the performance analysis framework, a thermoeconomic optimisation has been carried out based on an objective function defined as the total cost per unit work output, which depends on an economic parameter, work density, and thermal efficiency. The findings might be used to select the modified cycle's ideal design and operation parameters, which can be applied to actual engines.

Keywords: Carnot cycle; modified cycle; work density; performance analysis; thermoeconomic optimisation.

DOI: 10.1504/IJEX.2023.131485

International Journal of Exergy, 2023 Vol.41 No.2, pp.167 - 181

Received: 07 Oct 2022
Received in revised form: 24 Dec 2022
Accepted: 15 Jan 2023
Published online: 14 Jun 2023 *

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