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Review of thermally regenerative electrochemical systems

Author: Helena L Chum; Robert Allen Osteryoung; Solar Energy Research Institute.; United States. Department of Energy.; State University of New York at Buffalo.
Publisher: Washington, DC : United States Government Printing Office, 1980-81.
Edition/Format:   Print book : National government publication : EnglishView all editions and formats
Summary:
Thermally regenerative electrochemical systems (TRES) are closed systems that convert heat in to electricity in an electrochemical heat engine that is Carnot cycle limited in efficiency. Past and present work on such systems is reviewed. Two broad classes of TRES are based on the types of energy inputs required for regeneration: thermal alone and coupled thermal and electrolytic. The thermal regeneration alone  Read more...
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Additional Physical Format: Online version:
Chum, Helena L.
Review of thermally regenerative electrochemical systems.
Golden, Colo. : Solar Energy Research Institute ; Springfield, VA : Available from National Technical Information Service, 1981-
(OCoLC)759241364
Material Type: Government publication, National government publication, Internet resource
Document Type: Book, Internet Resource
All Authors / Contributors: Helena L Chum; Robert Allen Osteryoung; Solar Energy Research Institute.; United States. Department of Energy.; State University of New York at Buffalo.
OCLC Number: 8016152
Notes: "SERI/TR-332-416."
"August 1980"--Vol. 1.
"April 1981"--Vol. 2.
Description: 2 volumes : illustrations ; 28 cm
Contents: v. 1. Synopsis and executive summary --
v. 2. [No distinctive title].
Other Titles: Thermally regenerative electrochemical systems
Responsibility: Helena L. Chum, Robert A. Osteryoung ; prepared for the U.S. Department of Energy.

Abstract:

Thermally regenerative electrochemical systems (TRES) are closed systems that convert heat in to electricity in an electrochemical heat engine that is Carnot cycle limited in efficiency. Past and present work on such systems is reviewed. Two broad classes of TRES are based on the types of energy inputs required for regeneration: thermal alone and coupled thermal and electrolytic. The thermal regeneration alone encompasses electrochemical systems (galvanic or fuel cells) in which one or more products are formed. The regeneration can be performed in single or multiple steps. The compounds include metal hydrides, halides, oxides, chalcogenides, and alloys or bimetallic systems. The coupled thermal and electrolytic regeneration encompasses electrochemical systems (galvanic or fuel cells) regenerated by electrolysis at a different temperature or different pressure . Examples include metal halides and water. Thermogalvanic or nonisothermal cells are included in this category. Also included are electrochemical engines in which the working electroactive fluid is isothermally expanded through an electrolyte. TRES cover temperature ranges from about 20°C to 1000°C. Engines with power outputs of 0.1 mW / cm² to 1 W / cm² have been demonstrated. Recommendations are made of areas of research in science and engineering that would have long-range benefit to a TRES program.

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