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Title: Pressurized electrolysis stack with thermal expansion capability

Abstract

The present techniques provide systems and methods for mounting an electrolyzer stack in an outer shell so as to allow for differential thermal expansion of the electrolyzer stack and shell. Generally, an electrolyzer stack may be formed from a material with a high coefficient of thermal expansion, while the shell may be formed from a material having a lower coefficient of thermal expansion. The differences between the coefficients of thermal expansion may lead to damage to the electrolyzer stack as the shell may restrain the thermal expansion of the electrolyzer stack. To allow for the differences in thermal expansion, the electrolyzer stack may be mounted within the shell leaving a space between the electrolyzer stack and shell. The space between the electrolyzer stack and the shell may be filled with a non-conductive fluid to further equalize pressure inside and outside of the electrolyzer stack.

Inventors:
Publication Date:
Research Org.:
General Electric Company, Schenectady, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1193376
Patent Number(s):
9,080,242
Application Number:
12/242,767
Assignee:
General Electric Company (Schenectady, NY) IDO
DOE Contract Number:
FC07-06ID14789
Resource Type:
Patent
Resource Relation:
Patent File Date: 2008 Sep 30
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 08 HYDROGEN

Citation Formats

Bourgeois, Richard Scott. Pressurized electrolysis stack with thermal expansion capability. United States: N. p., 2015. Web.
Bourgeois, Richard Scott. Pressurized electrolysis stack with thermal expansion capability. United States.
Bourgeois, Richard Scott. Tue . "Pressurized electrolysis stack with thermal expansion capability". United States. doi:. https://www.osti.gov/servlets/purl/1193376.
@article{osti_1193376,
title = {Pressurized electrolysis stack with thermal expansion capability},
author = {Bourgeois, Richard Scott},
abstractNote = {The present techniques provide systems and methods for mounting an electrolyzer stack in an outer shell so as to allow for differential thermal expansion of the electrolyzer stack and shell. Generally, an electrolyzer stack may be formed from a material with a high coefficient of thermal expansion, while the shell may be formed from a material having a lower coefficient of thermal expansion. The differences between the coefficients of thermal expansion may lead to damage to the electrolyzer stack as the shell may restrain the thermal expansion of the electrolyzer stack. To allow for the differences in thermal expansion, the electrolyzer stack may be mounted within the shell leaving a space between the electrolyzer stack and shell. The space between the electrolyzer stack and the shell may be filled with a non-conductive fluid to further equalize pressure inside and outside of the electrolyzer stack.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 14 00:00:00 EDT 2015},
month = {Tue Jul 14 00:00:00 EDT 2015}
}

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  • A method of producing a glass-ceramic having a specified thermal expansion value is disclosed. The method includes the step of pressurizing the parent glass material to a predetermined pressure during heat treatment so that the glass-ceramic produced has a specified thermal expansion value. Preferably, the glass-ceramic material is isostatically pressed. A method for forming a strong glass-ceramic to metal seal is also disclosed in which the glass-ceramic is fabricated to have a thermal expansion value equal to that of the metal. The determination of the thermal expansion value of a parent glass material placed in a high-temperature environment is alsomore » used to determine the pressure in the environment.« less
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