Accession Number : AD0871401

Title :   Integrated Regenerative Fuel Cell Investigation.

Descriptive Note : Final technical rept. 2 Jan-2 May 70,

Corporate Author : PRATT AND WHITNEY AIRCRAFT SOUTH WINDSOR CT SOUTH WINDSOR ENGINEERING GROUP

Personal Author(s) : Clausi, Joseph V.

Report Date : 02 JUL 1970

Pagination or Media Count : 43

Abstract : A regenerative stack consisting of four hydrogen-oxygen fuel cells and two electrolysis cells was designed, fabricated, and successfully tested for 48 cycles. The regenerative stack was operated over the following range of parameters: fuel cell current densities from 50 amps/sq ft to 300 amps/sq ft, and temperatures current densities from 5 amps/sq ft to 90 amps/sq ft, and temperatures from 70F to 200F. Proper moisture transfer between fuel cells and electrolysis cells with vapor pressure gradients as the driving force was demonstrated at all operating conditions. The integrated stack fabricated and tested under this contract consists of a planar stack of four hydrogen/oxygen, alkaline electrolyte (KOH), low temperature, matrix fuel cells each about 2 inches by 10 inches and a planar stack of two 4.5 inch X 10 inch electrolysis cells of similar type. Water storage matrices are located adjacent to the hydrogen electrodes of both stacks and are separated by a hydrogen plenum. (Author)

Descriptors :   *AUXILIARY POWER PLANTS), (*FUEL CELLS, MANUFACTURING, HYDROGEN, OXYGEN, ELECTROLYSIS, SPACEBORNE, POWER SUPPLIES, INTEGRATED SYSTEMS.

Subject Categories : Electric Power Production and Distribution

Distribution Statement : APPROVED FOR PUBLIC RELEASE