Combustion Characteristics of Butane Porous Burner for Thermoelectric Power Generation

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 cm2were 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.

Assessment of porous media burner for surface/submerged flame during porous media combustion

“…The value of is kept unaltered thought out the experiment since the amount of butane supplied is kept constant. The calculated thermal efficiencies at maximum surface and submerged flame where at par with previously performed experimental work by researchers [10,13]. Among the three reaction layer considered the maximum with surface flame is seen at t=20mm, while with under submerge flame t=10mm can be an ideal choice.…”

Pengaruh persentase CO2 terhadap temperatur dan kecepatan api premixed laminar pada oxy-butane combustion

“…Kecepatan nyala laminar mengandung informasi fisikokimia tentang difusivitas, reaktivitas, dan eksotermisitas. Variabelvariabel tersebut mempengaruhi atau bahkan menentukan tingkat pembakaran campuran bahan bakar/udara pada suatu sistem pembakaran [3]. Selain itu, banyak fenomena api premixed, seperti api padam, flash back, dan lift off dapat dikarakterisasi dengan kecepatan api premixed laminar sebagai parameter referensi [4].…”