Cell-module and fuel-conditioner development. Final report, October 1979-January 1982

Hoover, D. Q.; Chi, C.V.; Kothmann, R.E.

doi:10.2172/6808326

Cited by 1 publication

(2 citation statements)

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“…This may be due to uncertainties in the catalyst parameters or the heat transfer. These model calculations used a heat transfer coefficient double that of eq 25, as suggested by the analyses of Hoover et al (1980). Given the close agreement of the temperature profiles, the heat-transfer coefficients appear to be in the right range.…”

Section: Model Resultsmentioning

confidence: 99%

“…Radiative heat transfer effects are not included in the model. Hoover et al (1980) analyzed both convective and radiative heat transfer to a fuel cell reformer tube under otherwise identical conditions and concluded there was little difference between the two cases (<20 °F difference in wall temperature). Additionally, the compact spacing of fuel cell reformer tubes and the high flow rates of relatively "low" temperature (2000-2500 °F) gas past the tubes would minimize any radiation effects present.…”

Section: Discussionmentioning

confidence: 99%

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Steam-methane reformer kinetic computer model with heat transfer and geometry options

Murray¹,

Snyder²

1985

Ind. Eng. Chem. Proc. Des. Dev.

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A kinetic computer model of a steam/methane reformer has been developed as a design and analytical tool for a fuel cell system's fuel conditioner. This model has reaction, geometry, flow arrangement, and heat transfer options. Model predictions have been compared to previous experimental data, and close agreement was obtained. Initially, the Leva-type, packed-bed, heat transfer correlations were used. However, calculations based upon the reacting, reformer gases indicate a considerably higher heat transfer coefficient for this reformer design. Data analysis from similar designs in the literature also shows this phenomenon. This is thought to be a reaction-induced effect, brought about by the changing of gas composition, the increased gas velocity, the lower catalyst temperature during reaction, and the higher thermal and reaction gradients involved in compact fuel cell reformer designs. Future experimental work is planned to verify the model's predictions further.

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Section: Model Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%