COOLING SUBSYSTEM FOR AN ELECTROCHEMICAL FUEL CELL SYSTEM

COOLING SUBSYSTEM FOR AN ELECTROCHEMICAL FUEL CELL SYSTEM

Improvements in startup time for an electrochemical fuel cell system from freezing and sub-freezing temperatures may be observed by minimizing the coolant volume in the coolant subsystem. In particular, this may be accomplished by having a two pump-dual loop cooling subsystem. During startup, one pu...

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Hauptverfasser: LIN BRUCE, LOUIE CRAIG R, BACH PETER J, ROBERTS JOY A, NELSON AMY E, LIMBECK UWE M
Format: Patent
Sprache:eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator LIN BRUCE
LOUIE CRAIG R
BACH PETER J
ROBERTS JOY A
NELSON AMY E
LIMBECK UWE M
description Improvements in startup time for an electrochemical fuel cell system from freezing and sub-freezing temperatures may be observed by minimizing the coolant volume in the coolant subsystem. In particular, this may be accomplished by having a two pump-dual loop cooling subsystem. During startup, one pump directs coolant through a startup coolant loop and after either the fuel cell stack or the coolant temperature reaches a predetermined threshold value, coolant from a main or standard coolant loop is then directed to the fuel cell stack. In an embodiment, coolant from the standard loop mixes with coolant in the startup loop after the predetermined threshold temperature is reached.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title COOLING SUBSYSTEM FOR AN ELECTROCHEMICAL FUEL CELL SYSTEM
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