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Proceedings of Symposium on Energy Engineering in the 21<sup>st</sup> Century (SEE2000) Volume I-IV

ISSN:
1-56700-132-7 (Print)

PERFORMANCE EVALUATION OF THE TWO-FLUID CYCLE IN MUNICIPAL SOLID WASTE-BURNT POWER GENERATION

Terushige Fujii
Department of Mechanical Engineering, Kobe University, Kobe, Japan

Katsumi Sugimto
Faculty of Engineering, Kobe University 1-1, Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan

Tomoya Yamashita
Faculty of Engineering, Kobe University 1-1, Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan

Hitoshi Asano
Department of Mechanical Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan

Nobutaka Tsuchimoto
Takuma Co., Ltd., Kinrakuji, Amagasaki JAPAN

Abstract

An improvement of energy conversion efficiency is important for energy saving and for solving the global environmental problems. The two-fluid cycle is dealt with for municipal solid waste(MSW)-burnt electric power generation, using 6 kinds of fluid such as NH3, C5H12, C6H6, and H2O as the working fluid at the bottoming cycle against water on the topping cycle. The performance characteristics of the two-fluid cycle are calculated and the optimum cycle conditions, which maximize the plant's thermal efficiency, are determined for the respective working fluid. As a result, it is shown that the plant's thermal efficiency was increased from 17.6 % to 21.3 % for the single Rankine cycle by the adoption of the two-fluid cycle, using C6H6 as the working fluid under a constant condition of the topping steam temperature of 295°C.