Development of an aluminum fuel cell power source for a diver heating system: Summary of Phase 2 activities


  1. Deuchars, G.D.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Fuel Cell Technologies Ltd, Kingston ONT (CAN)
This report describes the second phase of a program to develop a Diver Heating System (DHS). The technology selected for the power supply was the alumimum-oxygen fuel cell. An aluminum anode is oxidized in the presence potassium hydroxide electrolyte when supplied by oxygen from a conventional diver's oxygen storage and regulator equipment. The fuel cell is approximately 50% efficient. The heat rejected to the electrolyte is recovered in a heat exchanger, and the electrical output is also converted to heat. During this phase of the work, a pumped system was developed, after a trade-off analysis showed that a pumped system had significant cost and logistical advantages over the type of cell stack developed in phase one of the work. The electrochemical performance of the cell stack and the technical feasibility of this type and design of fuel cell had been proven in phase one of the work, but the development of a pumped system represented a significant departure from the previous phase 1 work. The system was designed, built and successfully tested in the presence of the scientific authority. The system was tested underwater, and delivered 500 Watts of thermal output for a period of 5 1/2 hours. The test demonstrated the integration of all of the required subsystems of the fuel cell, but did not include integration of the fuel cell with the diver heating system (DHS) developed by Delta Temax. TRUNCATED
Chemical energy sources;Closed circuit;Diver heating;Electrical heating
Report Number
DCIEM-CR-2001-070 — Contractor Report
Date of publication
30 Mar 2001
Number of Pages
Hardcopy;Document Image stored on Optical Disk

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