The potential of exhaust waste heat recovery (WHR) from a diesel-gen-set via rankine cycle
Date
2024
Authors
Yee Ng, W.
Christopher, S.
Bari, S.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
4th IEEE International Conference on Electrical, Computer, and Energy Technologies, ICECET 2024, 2024, pp.1-6
Statement of Responsibility
Conference Name
2024 International Conference on Electrical, Computer and Energy Technologies (ICECET) (25 Jul 2024 - 27 Jul 2024 : Sydney, Australia)
Abstract
Approximately one-third of fuel energy in internal combustion engines dissipates as exhaust gas heat, posing a significant obstacle to electricity generation. Interest in recovering this waste heat is growing, and this paper proposes a solution by utilizing surplus heat from a diesel engine to enhance power generation through a Waste Heat Recovery (WHR) system. The main objectives are to improve power generation efficiency by simulating and optimizing the WHR system using Engineering Equation Solver (EES), focusing on maximizing power output and freshwater production while minimizing costs. For a 1.1 MW diesel-gen-set, the system achieves a remarkable net additional power production of 131.0 kW, with an expected payback period of 4.8 years. Additionally, the WHR system can produce 8.56 ML/year of freshwater with a payback period of 4.63 years. Combining additional power and freshwater production reduces the payback period to just 2.0 years. Key parameters such as maintaining a 100 kPa absolute exhaust pressure, an aspect ratio of approximately 3, and a pinch temperature of 20 K provide valuable operational insights. Sensitivity analysis of these parameters enhances understanding of their impact on system performance, guiding future research toward more efficient and sustainable WHR systems.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
Copyright 2024 IEEE