This article aims to study the effect of pressure drop on the thermal behavior of porous burners. Since the reticulated ceramics are used in the burners’ construction, in the previous researches pressure drop arising from flow velocity was ignored. This research has showed that due to the increase of speed resulting from combustion, the consequence pressure drop creates considerable effects on the thermal performance of porous burners. To study this subject, the temperature of a point on the burner axis has been taken to be constant. The burned gas and exit surface temperature were obtained almost the same for two conditions, one with the pressure held constant and the other with a pressure drop. Results show that the firing rate was decreased up to 18%, compared to the constant pressure case. The thermal radiative efficiency of radiant porous burners, in which the pressure drop has been considered, was increased about 3–5% for the studied equivalence ratio of methane-air combustion.
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Research Papers
Numerical Investigation on the Effects of Pressure Drop on Thermal Behavior of Porous Burners
M. Khosravy El-Hossaini,
M. Khosravy El-Hossaini
Mechanical Engineering Department,
Tarbiat Modares University
, P.O. Box 14115-143, Tehran, Iran
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M. Maerefat,
M. Maerefat
Mechanical Engineering Department,
e-mail: maerefat@modares.ac.ir
Tarbiat Modares University
, P.O. Box 14115-143, Tehran, Iran
Search for other works by this author on:
K. Mazaheri
K. Mazaheri
Mechanical Engineering Department,
Tarbiat Modares University
, P.O. Box 14115-143, Tehran, Iran
Search for other works by this author on:
M. Khosravy El-Hossaini
Mechanical Engineering Department,
Tarbiat Modares University
, P.O. Box 14115-143, Tehran, Iran
M. Maerefat
Mechanical Engineering Department,
Tarbiat Modares University
, P.O. Box 14115-143, Tehran, Irane-mail: maerefat@modares.ac.ir
K. Mazaheri
Mechanical Engineering Department,
Tarbiat Modares University
, P.O. Box 14115-143, Tehran, IranJ. Heat Transfer. Mar 2008, 130(3): 032601 (5 pages)
Published Online: March 5, 2008
Article history
Received:
November 6, 2006
Revised:
June 26, 2007
Published:
March 5, 2008
Citation
El-Hossaini, M. K., Maerefat, M., and Mazaheri, K. (March 5, 2008). "Numerical Investigation on the Effects of Pressure Drop on Thermal Behavior of Porous Burners." ASME. J. Heat Transfer. March 2008; 130(3): 032601. https://doi.org/10.1115/1.2804947
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