Mustafa, K. F. and Abdullah, S. and Abdullah, M. Z. and Sopian, K.
(2015)
Combustion Characteristics of Butane Porous Burner for
Thermoelectric Power Generation.
Journal of Combustion, 2015 (121487).
pp. 1-13.
ISSN 2090-1968
Abstract
The present study explores the utilization of a porous burner for thermoelectric power generation. The porous burner was tested
with butane gas using two sets of configurations: single layer porcelain and a stacked-up double layer alumina and porcelain.
Six PbSnTe thermoelectric (TE) modules with a total area of 54 cm2 were attached to the wall of the burner. Fins were also
added to the cold side of the TE modules. Fuel-air equivalence ratio was varied between the blowoff and flashback limit and
the corresponding temperature, current-voltage, and emissions were recorded. The stacked-up double layer negatively affected
the combustion efficiency at an equivalence ratio of 0.20 to 0.42, but single layer porcelain shows diminishing trend in the
equivalence ratio of 0.60 to 0.90. The surface temperature of a stacked-up porous media is considerably higher than the single
layer. Carbon monoxide emission is independent for both porous media configurations, but moderate reduction was recorded for
single layer porcelain at lean fuel-air equivalence ratio. Nitrogen oxides is insensitive in the lean fuel-air equivalence ratio for both
configurations, even though slight reduction was observed in the rich region for single layer porcelain. Power output was found to
be highly dependent on the temperature gradient.
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