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Optimal Unit Sizing of Biogas-Fuelled Micro Gas Turbine Cogeneration Systems in a Sewage Treatment Plant

F., Basrawi and Hassan, Ibrahim and Yamada, Takanobu (2015) Optimal Unit Sizing of Biogas-Fuelled Micro Gas Turbine Cogeneration Systems in a Sewage Treatment Plant. Energy Procedia, 75. pp. 1052-1058. ISSN 1876-6102

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Abstract

This paper investigates the optimum size of Micro Gas Turbine Cogeneration Systems (MGT-CGSs) in a sewage treatment plant in relation to its economic performance. A sewage treatment plant in a cold region was adopted as a model, and three units of MGT-CGS with power output capacity of 30, 65 and 200 kW were simulated to utilize biogas produced in-house in the plant. The energy balance of the system was first studied, and economic performance using Net Present Value method was carried out. It was found that a configuration with optimum combination of 3 types of MGTs (MGT-Combined) stated above had the highest power generation efficiency. However, MGT-Combinedneededmore units of MGT resulting in higher capital investment. Although all configurations of MGT-CGSs studied can generate Net Present Value (NPV) in the range of US$2,640,000-3,100,00, MGT-200had the highest NPV. MGT-200 had15% higher NPV compared to the lowest one,MGT-30. MGT-200 can generate the highest NPV because it had thelowest capital investment cost, while having high power cost savings.

Item Type: Article
Uncontrolled Keywords: Micro gas turbine; Cogeneration System; Sewage treatment plant; Biogas; Economic analysis; Sizing effect
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 09 Sep 2015 06:14
Last Modified: 01 Feb 2018 04:16
URI: http://umpir.ump.edu.my/id/eprint/10209
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