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Techno-Economic Performance of Biogas-Fueled Micro Gas Turbine Cogeneration Systems in Sewage Treatment Plants: Effect of Prime Mover Generation Capacity

F., Basrawi and Thamir K., Ibrahim and Khairul, Habib and Yamada, Takanobu and D. M. N., D. Idris (2017) Techno-Economic Performance of Biogas-Fueled Micro Gas Turbine Cogeneration Systems in Sewage Treatment Plants: Effect of Prime Mover Generation Capacity. Energy, 124. pp. 238-248. ISSN 1876-6102

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Abstract

The optimum size of Micro Gas Turbine Cogeneration Systems (MGT-CGSs) in a Sewage Treatment Plant (STP) in terms of its economic performance was investigated. A STP operating in a cold region was adopted as a model and was scaled down to obtain different size ratios. It was also assumed to operate in different regions to obtain different heat demand patterns. MGT-CGSs with power output capacity of 30, 65 and 200 kW were simulated to utilize biogas produced by the STP. Instead of multiple units of the same size of MGT-CGSs, combination of different sizes of MGT-CGSs was also investigated. Life Cycle Cost Analysis was carried out to compare the economic performance of MGT-CGSs. It was found that optimum combination of three types of MGTs (MGT-Combined) stated above had the highest power generated and efficiency. However, MGT-Combined also had larger power generation capacity and low usage ratio, thus resulting in higher capital investment. Although all configurations of MGT-CGSs can generate Net Present Value, optimum configuration was obtained when the rated fuel input of MGT-CGS is approximately equal to the biogas production of the STP. However, when heat demand fluctuates throughout the year smaller size of MGT is preferred.

Item Type: Article
Uncontrolled Keywords: Micro gas turbine; Cogeneration system; Sewage treatment plant; Sizing; Economic performance; Biogas
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 19 Jul 2017 03:05
Last Modified: 19 Jul 2017 03:05
URI: http://umpir.ump.edu.my/id/eprint/17116
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