Title:
FUEL CONTROL FOR FUEL-PROCESSOR STEAM GENERATION IN LOW TEMPERATURE FUEL CELL POWER PLANT
Document Type and Number:
WIPO Patent Application WO2004019428
Kind Code:
A3
Abstract:
A control method and arrangement (48, 50, 150, I, T, P, FFL) are provided in a fuel cell power plant (10) for regulating (48, FC) fuel flow to a steam-based fuel processing system (FPS) (14) associated with a low-temperature fuel cell stack assembly (12). A portion of the fuel provided by the FPS (14) is used to provide steam for the FPS. The fuel flow to the FPS is regulated as a function of the power demand (I) on the fuel cell (12) and at least the enthalpy of the steam (P, T), such that the steam enthalpy is regulated to meet increases and decreases in power demand without exceeding steam pressure limits. In addition to reliance on steam pressure (P) as a fundamental measure of steam enthalpy, the control may additionally use reaction temperature (T) at, or in, a reformer, such as a catalytic steam reformer (132), to regulate fuel flow and thus, steam enthalpy.
Inventors:
ISOM JOSHUA D
PHO HA-ANH H
KABIR ZAKIUL
MARGIOTT PAUL R
VARTANIAN GEORGE
PHO HA-ANH H
KABIR ZAKIUL
MARGIOTT PAUL R
VARTANIAN GEORGE
Application Number:
PCT/US2003/024533
Publication Date:
July 01, 2004
Filing Date:
August 06, 2003
Export Citation:
Assignee:
UTC FUEL CELLS LLC (US)
International Classes:
H01M8/04; H01M8/06; H01M8/10; (IPC1-7): H01M8/00; H01M8/18; H01M8/04; H01M8/12; H01M2/14
Foreign References:
| US4002805A | 1977-01-11 |
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