Sustainable Energy through Multigeneration Systems

By Ravi Prakash and Alex Henham.

Published by The Sustainability Collection

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Article: Print $US10.00
Article: Electronic $US5.00

Multigeneration (e.g. cogeneration and trigeneration) systems simultaneously produce power and useful heating/cooling effects. They have the advantage of very high efficiency of primary fuel utilization, and offer opportunities for significant reduction in carbon emissions compared to the single
generation (i.e. power only) mode. This paper focuses on the evaluation of overall performance of multigeneration systems using different prime movers for a comparative assessment. An ‘Electrical Equivalent
Efficiency’ of a multigeneration plant has been proposed. Such an overall efficiency has been evaluated for three major prime movers i.e. diesel/gas engine, gas turbine and steam turbine in the
multigeneration mode. An integrated system for production of fresh water, cooling and power (for tropical coastal areas) has also been proposed and analysed. In all cases, it was observed that there
is a significant improvement in primary fuel utilization efficiency (as high as 19%), leading to a significant potential (as high as 50%) for reducing carbon emissions.

Keywords: Sustainable Energy, Cogeneration, Trigeneration, Electrical Equivalent Efficiency, Carbon Reduction

The International Journal of Environmental, Cultural, Economic and Social Sustainability, Volume 7, Issue 4, pp.311-326. Article: Print (Spiral Bound). Article: Electronic (PDF File; 994.521KB).

Dr. Ravi Prakash

Assistant Professor, Department of Mechanical Engineering, Motilal Nehru National Institute of Technology, Allahabad, U.P, India

Dr. Ravi Prakash is a member of the Institution of Engineers (India) and of the Solar Energy Society of India. He is working as an Associate Professor in the Department of Mechanical Engineering at the Motilal Nehru National Institute of Technology, Allahabad, (UP), India. His professional interests include renewable energy, energy conservation, refrigeration & air-conditioning, life cycle analysis, and sustainability.

Dr. Alex Henham

University of Surrey, Guildford, Surrey, UK

Dr. Alex Henham is a Fellow of the Institution of Mechanical Engineers and of the Energy Institute, a Chartered Engineer in the UK and a European Engineer. He continues to work part-time in the University of Surrey’s Division of Mechanical, Medical and Aerospace Engineering where he was formerly Senior Lecturer in Applied Thermodynamics and Director of the MSc in Energy Engineering. He has acted as an Energy Consultant to government departments and large industrial companies and as an advisor on energy courses to universities in Asia.

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