Study of a Small-Scale Fuel Cell Cogeneration System with Methanol Steam Reforming Considering Partial Load and Load Fluctuation

[+] Author and Article Information
S. Obara

 Tomakomai National College of Technology, Tomakomai 059-1275, Japanshinya@me.tomakomai-ct.ac.jp

K. Kudo

Graduate School of Engineering,  Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo 060-8628, Japan

J. Energy Resour. Technol 127(4), 265-271 (Mar 21, 2005) (7 pages) doi:10.1115/1.1926310 History: Received July 28, 2004; Revised March 21, 2005

Performance analysis and cost estimation are carried out for a cogeneration system consisting of a solid high-polymer-film-type fuel cell with a methanol reformer applied to individual houses. For the operation of the fuel cell under a partial load, a unique point of this system is the shifting of the driving point by the electric heater. Considering the annual energy cost for an average house in Sapporo, Japan, the energy cost of this system is shown to be 1.42 times that of conventional systems in which a cogeneration system is not installed.

Copyright © 2005 by American Society of Mechanical Engineers
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Figure 4

Energy loss and mass loss with each unit

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Figure 5

Characteristics of shifter product gas output

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Figure 6

Characteristics of fuel cell

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Figure 7

Characteristics of fuel cell stack output

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Figure 8

Thermal and electric energy output of the system

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Figure 9

Relation of fuel supply and electric power consumption of the boiler

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Figure 10

Compariation of fuel consumption

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Figure 11

Operating energy cost

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Figure 12

Monthly energy cost of co-generation system

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Figure 1

System configuration

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Figure 2

Fuel-cell system with methanol steam reforming

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Figure 3

Temperature target



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