Title: Performance assessment of trigeneration system based on a renewable fuelled HCCI engine for the efficient production of power, heating, and cooling

Authors: Eydhah Almatrafi; Mohd Asjad Siddiqui

Addresses: Department of Mechanical Engineering, Faculty of Engineering at Rabigh, King Abdulaziz University, Jeddah, 21589, Saudi Arabia; Center of Excellence in Desalination Technology, King Abdulaziz University, Jeddah, 21589, Saudi Arabia ' Department of Mechanical Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi, 110025, India

Abstract: This study conducted a comparative thermodynamic assessment of an integrated system that utilises a wet-ethanol fuelled HCCI engine to meet energy needs in a sustainable way. Utilising the waste heat from HCCI engines in conjunction with the Kalina cycle and NH₃-H₂O-based absorption refrigeration cycle (ARC), the system can simultaneously provide power, cooling, and heating. Various parameters were used to analyse the integrated system's performance. Results show that incorporating Kalina and ARC cycles effectively utilises the waste heat from the HCCI engine, increasing the thermal efficiency of combined cycle by 23.78% to 52.0% and exergy efficiency by 14.55% to 39.60%.

Keywords: wet-ethanol; HCCI engine; waste heat recovery; Kalina cycle; absorption refrigeration cycle; ARC; exergy.

DOI: 10.1504/IJEX.2025.143805

International Journal of Exergy, 2025 Vol.46 No.1, pp.49 - 66

Received: 13 Jun 2024
Accepted: 23 Oct 2024
Published online: 07 Jan 2025 *

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