Energy and exergy analyses of a hydrogen added wet-ethanol fuelled HCCI engine-based cogeneration of power and refrigeration
by Tawfiq Abdul-Aziz Al-Mughanam; Abdul Khaliq
International Journal of Exergy (IJEX), Vol. 44, No. 1, 2024

Abstract: This study aimed to propose and investigate a novel system that combines organic Rankine cycle and ejector refrigeration cycle with hydrogen production and on-site utilisation in HCCI engine. Energy and exergy analyses shown that using R134a as working fluid and elevation of pressure ratio by 40% results in enhancement of cogeneration efficiency by 4.63%. Promoting vapour generator pressure (P_VG) decreases the cooling capacity by more than 2% for R134a systems, while this decrease becomes 1.9% for R600a. Increasing evaporator pressure (P_evap) greatly improves performance and cooling capacity. Exergy destruction in HCCI engine dropped from 90.09% to 89% with 20% hydrogen.

Online publication date: Wed, 29-May-2024

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