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International Journal of Energy for a Clean Environment
SJR: 0.195 SNIP: 0.435 CiteScore™: 0.74

ISSN 印刷: 2150-3621
ISSN オンライン: 2150-363X

International Journal of Energy for a Clean Environment

Formerly Known as Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.2017014404
pages 99-111

WASTE ENERGY RECOVERY SYSTEM FOR AUTOMOBILE ENGINE EXHAUST GAS AND COOLANT

Mohammed S. Mayeed
Department of Mechanical Engineering, Kennesaw State University, Marietta, GA 30060, USA
S. Mostafa Ghiaasiaan
Department of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA

要約

In this study, the key components of combined cycles designed for waste energy recovery from automobile engines have been virtually designed for being light weight, small sized without compromising strengths, and based on integration with the existing components of an automobile. A simulation was performed to examine the amount of waste energy that could be recovered and the consequential increase in the overall thermal efficiency through the use of Kalina, ethanol, and steam cycles using the Engineering Equation Solver soft ware under typical engine operating conditions. It was observed that the steam cycle was better for recovering energy from the exhaust gas in the higher temperature range (689°C to 160°C) and the Kalina cycle was better for recovering energy from the exhaust gas and the cooling water in the lower temperature range (122°C to 80°C) among the three cycles. It was found that using this combination of cycles, about 5 kW of power could be extracted from the waste energy. The next thing was to determine the amount of space, weight, and design to incorporate a system of cycles like this with an automobile. The combined cycle generation, a process widely used in existing power plants, has become a viable option for automotive applications due to the advances in the materials science, nanotechnology, and MEMS (Micro-Electro Mechanical Systems) devices. Critical components of the best performing cycles have been designed using computer-aided engineering for the minimization of weight and space, and integration with the typical components of an automobile.