e-journal

Improvement of proton exchange membrane fuel cell overall efficiency by integrating heat-to-electricity conversion

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Abstract.
Proton exchange membrane fuel cells (PEMFCs) have shown to be well suited for distributed power generation
due to their excellent performance. However, a PEMFC produces a considerable amount of heat
in the process of electrochemical reaction. It is desirable to use thermal energy for electricity generation
in addition to heating applications. Based on the operating characteristics of a PEMFC, an advanced thermal
energy conversion system using “ocean thermal energy conversion” (OTEC) technology is applied to
exploit the thermal energy of the PEMFC for electricity generation. Through this combination of technology,
this unique PEMFC power plant not only achieves the combined heat and power efficiency, but also
adequately utilizes heat to generate more valuable electricity. Exergy analysis illustrates the improvement
of overall efficiency and energy flow distribution in the power plant. Analytical results show that
the overall efficiency of the PEMFC is increased by 0.4–2.3% due to the thermal energy conversion (TEC)
system. It is also evident that the PEMFC should operate within the optimal load range by balancing the
design parameters of the PEMFC and of the TEC system.

Keywords: Distributed power generation, PEMFC, Exergy analysis, Overall efficiency, Thermal energy conversion (TEC).

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Informasi Detail

Judul Seri

Journal of Power Sources

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Journal of Power Sources 191 (2009) 433–441

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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