Achieving Sustainable Development in Small Communities via Combined Heat and Power Systems


The design of a feasible Combined Heat and Power plant for a small community is presented. Of the many alternatives solid-waste disposal methods available, incineration of solid waste is recommended due to its potential energy recovery of the heat released during solid waste incineration and recovery of valuable by-products that can either be reused, re- cycled or marketed, among other advantages. Hence, an attempt is made to use the heat energy released during incin- eration of solid waste to produce steam in a boiler, which in turn powers a turbine for eventual generation of electricity. The two processes involved in the generation of electricity for in-plant use or for a small community via a steam turbine-generator combination and a gas compressor-gas turbine-generator are presented. The analysis of the amount of energy produced from the solid waste energy-conversion system using an incinerator-boiler-steam turbine-electric generator combination with a capacity of 4.5 tons/day is also presented. The net electric power for a small community was found to be 148.24 kW with an overall efficiency of about 21% having taken cognisance of the process power needs and unaccounted process heat losses. Moreover, exergy analysis of the proposed CHP plant was carried out whereby the respective energy and exergy efficiencies of 83.2% and 62.1% were obtained.

Share and Cite:

O. Olafadehan, L. Salami, B. Adeoye and T. Ajayi, "Achieving Sustainable Development in Small Communities via Combined Heat and Power Systems," Engineering, Vol. 4 No. 3, 2012, pp. 160-169. doi: 10.4236/eng.2012.43021.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] O. Iyiola, “Effective Solid Waste Management: Integrated, Decentralised, Cost-Effective and Market-Based Approach,” The Workshop on Effective Solid Waste Management, Lagos, Au-gust 2009.
[2] O. A. Olafadehan, “The Design of a Solid-Waste Management System with Material and Energy Recovery,” Master’s Thesis, University of Lagos, Lagos, 1994.
[3] Y. Okunubi, “Fundamentals of Solid Waste Management Policies and Practices,” The Workshop on Effective Solid Waste Management, Lagos, Nigeria, August 2009.
[4] T. Howard and B. Odum, “Concept and Methods of Ecological Engineering,” Environmental Engineering Sciences, University of Florida, Gainesville, 2008.
[5] L. Theodore and J. Reynolds, “Introduction to Hazardous Waste Incineration,” Wiley, New York, 1987.
[6] L. V. Ralph, “Practical Guide to Industrial Boiler System,” McGraw-Hill Inc., New York, 2001.
[7] M. S. Peter, K. D. Timmerhaus and R. E. West, “Plant Design and Economics for Chemical Engineers,” McGraw- Hill Chemical Engineering Series, New York, 2003.
[8] B. Clive, “Energy Management, Supply and Conser-vation,” British Library Cataloguing in Publication Data, London, 2002.
[9] G. Tchobanoglous, H. Theisen and Eliassen, R. “Engineering Principles and Management Issues,” McGraw-Hill, New York, 1972.
[10] I. Dincer and M. Rosen, “Exergy, Environment and Sustainable Development,” Khiwer, Academic, 2007.
[11] B. K. Adeoye, “Achieving Sustainable Development in Combined Heat and Power System—An Exergy Analy- sis,” Master’s Thesis, University of Lagos, Lagos, 2010.

Copyright © 2024 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.