摘要:
A vessel containing a catalytic bed for an endothermic reaction for processing hydrocarbon fuel in a fuel cell, such as a hydrocarbon/steam reform reaction, is coaxially disposed inside a vessel containing a catalytic bed for the exothermic water/gas shift conversion reaction. Start up heat required to bring the shift converter catalytic bed up to operating temperature is provided by the primary heat supply of the endothermic reaction, such as an adjacent hydrogen burner or a flow of hot exhaust from a remote burner, thereby eliminating the need for shift converter start up heaters. In one embodiment, burner air flows between the primary heat and the shift converter bed during normal running operation, the flow of burner air being bypassed for an improved heat transfer to the shift converter bed during start-up.
摘要:
1. A liquid fuel cell battery arrangement comprising: a plurality of individual circulating systems for fuel electrolyte mixture, each system including a separate fuel cell battery element, a separate associated in individual storage tank for said mixture, and means for circulating said mixture from said tank through said associated battery element and back into the same storage tank; means for introducing fuel-electrolyte mixture from outside said circulating systems into one of said individual storage tanks; means for cascading said mixture consecutively through all of said individual storage tanks, said cascading means comprising a separate overflow pipe connecting each storage tank to the next, each overflow pipe having its inlet positioned to establish a predetermined overflow level in one tank, and its outlet positioned below the predetermined overflow level in the next cascade tank; means for sensing the concentration of said mixture circulating in one of said individual circulating systems; and means responsive to said sensing means to control the flow of said mixture through said introducing means to regulate the sensed concentration.
摘要:
A device is disclosed whereby a heat transfer medium is inserted between a fuel cell stack and an attached boiler to improve the heat transfer from the cell stack to the boiler. The medium consists essentially of a porous nonconductive matrix saturated with a dielectric grease.
摘要:
THE INVENTION COMPRISES A FUEL CELL TEMPERATURE CONTROL WHICH ANTICIPATES HEATING BY INTERNAL LOSSES GENERATED AS A RESULT OF FUEL CELL LOAD CURRENT VARIATION AND INITIATES COOLING IN ADVANCE OF THE ACTUAL TIME THE TEMPERATURE RISE IS SENSED BY THE TEMPERATURE DETECTING MEANS. A DIFFERENTIAL AMPLIFIER RECEIVES A FIRST INPUT SIGNAL WHICH IS A FUNCTION OF THE RATE OF CHANGE OF FUEL CELL CURRENT AND TIME AND A SECOND INPUT SIGNAL WHICH IS A FUNCTION OF FUEL CELL TEMPERATURE, AND MEANS RESPONSIVE TO THE OUTPUT FROM THE DIFFERENTIAL AMPHLIFIER REGULATE THE FLOW OF COOLANT THROUGH A HEAT EXCHANGER IN HEAT TRANSFER RELATION WITH THE FUEL CELL.