A Study of Material Compatibility With Deionized Water

Paper #:
  • 2003-01-0804

Published:
  • 2003-03-03
DOI:
  • 10.4271/2003-01-0804
Citation:
Cortese, M. and James, R., "A Study of Material Compatibility With Deionized Water," SAE Technical Paper 2003-01-0804, 2003, doi:10.4271/2003-01-0804.
Abstract:

Deionized (DI) water is being used for humidification and cooling on some fuel cell designs. This highly purified water is corrosive, yet the high purity is required to maintain the function and durability of the fuel cell. A study of the deionized water system was undertaken to determine the effect of various materials on water quality, and also to determine the effect of deionized water on each material. The test setup was designed to circulate fluid from a reservoir, similar to an actual application. The fluid temperature, pressure, and flow rate were controlled. The resistivity of the water was observed and recorded. Pre- and post-testing of the water and the materials was performed. The goal is to achieve system cleanliness and durability similar to a stainless steel system using lighter, less expensive materials. This paper describes the test setup, test procedures, and the overall results for the eight materials tested.

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