PHOSPHORIC ACID FUEL CELL

PROBLEM TO BE SOLVED: To obtain an operation method in which decrease in flow rate of fuel gas or air to be supplied to a fuel cell laminator or hydrogen density in the fuel gas is certainly detected and is properly controlled. SOLUTION: An air flow rate sensing cell 2A is arranged which has a volta...

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Bibliographische Detailangaben
1. Verfasser:	KIZAWA SHUICHI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain an operation method in which decrease in flow rate of fuel gas or air to be supplied to a fuel cell laminator or hydrogen density in the fuel gas is certainly detected and is properly controlled. SOLUTION: An air flow rate sensing cell 2A is arranged which has a voltage generated with an decrease of the air flow rate and has the voltage lowered more than that of the other cell in the vicinity of an upper end of a fuel cell laminator 1 composed of a laminate of a number of single cells 2, and a fuel gas flow rate sensing cell 2C is arranged which has a voltage generated with a decrease in the fuel gas flow rate and has the voltage lowered more than that of the other cell in the vicinity of a lower end, and a hydrogen density sensing cell 2B is arranged which a voltage generated with an decrease in the hydrogen density in the fuel gas and has the voltage lowered more than that of the other cell. These voltage are measured by DC voltmeters 21, 23, and 22, decrease is detected by comparing the voltages with a standard value by means of calculator 24, a command signal is sent to a controller, and the air flow rate, fuel gas flow rate, or hydrogen density is controlled.