Title: Effects of various long-chain alcohols as alternative fuel additives on exergy and cost in a spark-ignition engine
Authors: Battal Doğan; Murat Kadir Yeşilyurt; Derviş Erol; Hayri Yaman
Addresses: Department of Energy Systems Engineering, Faculty of Technology, Gazi University, 06500, Ankara, Turkey ' Department of Mechanical Engineering, Faculty of Engineering-Architecture, Yozgat Bozok University, 66200, Yozgat, Turkey ' Department of Automotive Technology, Kırıkkale Vocational School, Kırıkkale University, 71450, Kırıkkale, Turkey ' Department of Automotive Technology, Kırıkkale Vocational School, Kırıkkale University, 71450, Kırıkkale, Turkey
Abstract: This paper deals with exergy and exergoeconomic analyses of gasoline-hexanol and gasoline-heptanol blends as alternative additives were performed in a spark-ignition engine at a constant speed (1,600 rpm). Fuel cost rate, cost per unit of exergy for power, cost rate of total exergy loss, exergonomic factor, and relative cost difference were calculated. The lowest cost of the power acquired from the engine for G100, HEX20 and HP20 at 5 kW was $0.122/MJ, $0.656/MJ and $1.042/MJ, respectively, and the corresponding fuel cost rates were $1.07/h, $5.2/h and $8.26/h, respectively.
Keywords: spark-ignition engine; hexanol; heptanol; exergy; exergoeconomic.
International Journal of Exergy, 2022 Vol.38 No.1, pp.27 - 48
Received: 29 Mar 2021
Accepted: 16 Jul 2021
Published online: 19 Apr 2022 *