Improving the performance of porous radiant burners through use of sub-micron size fibers

Wai Cheung Timothy Tong; S. B. Sathe; R. E. Peck

doi:10.1016/0017-9310(90)90263-T

Improving the performance of porous radiant burners through use of sub-micron size fibers

Wai Cheung Timothy Tong, S. B. Sathe, R. E. Peck

Research output: Journal article publication › Journal article › Academic research › peer-review

37 Citations (Scopus)

Abstract

An analysis has been carried out to determine the performance of porous radiant burners (PRB) as a function of fiber size. PRB made with silica or alumina fibers are considered. The radiative properties of the fibers are determined using the electromagnetic wave scattering theory for two different characteristics temperatures- 1000 and 1500°C. The properties are used in a combined-mode heat transfer model to calculate the amount of energy radiated by the PRB. It is found that fibers smaller than the order of 1 μm in diameter produce significantly higher radiant output. For a characteristic temperature of 1000°C, in some cases, the increase in output is as high as 63 and 109% for silica and alumina fibers, respectively. For a characteristic temperature of 1500°C, the corresponding increases are 72 and 150%, respectively.

Original language	English
Pages (from-to)	1339-1346
Number of pages	8
Journal	International Journal of Heat and Mass Transfer
Volume	33
Issue number	6
DOIs	https://doi.org/10.1016/0017-9310(90)90263-T
Publication status	Published - 1 Jan 1990
Externally published	Yes

ASJC Scopus subject areas

Fluid Flow and Transfer Processes
General Energy
Mechanical Engineering

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10.1016/0017-9310(90)90263-T

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abstract = "An analysis has been carried out to determine the performance of porous radiant burners (PRB) as a function of fiber size. PRB made with silica or alumina fibers are considered. The radiative properties of the fibers are determined using the electromagnetic wave scattering theory for two different characteristics temperatures- 1000 and 1500°C. The properties are used in a combined-mode heat transfer model to calculate the amount of energy radiated by the PRB. It is found that fibers smaller than the order of 1 μm in diameter produce significantly higher radiant output. For a characteristic temperature of 1000°C, in some cases, the increase in output is as high as 63 and 109% for silica and alumina fibers, respectively. For a characteristic temperature of 1500°C, the corresponding increases are 72 and 150%, respectively.",

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AU - Peck, R. E.

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AB - An analysis has been carried out to determine the performance of porous radiant burners (PRB) as a function of fiber size. PRB made with silica or alumina fibers are considered. The radiative properties of the fibers are determined using the electromagnetic wave scattering theory for two different characteristics temperatures- 1000 and 1500°C. The properties are used in a combined-mode heat transfer model to calculate the amount of energy radiated by the PRB. It is found that fibers smaller than the order of 1 μm in diameter produce significantly higher radiant output. For a characteristic temperature of 1000°C, in some cases, the increase in output is as high as 63 and 109% for silica and alumina fibers, respectively. For a characteristic temperature of 1500°C, the corresponding increases are 72 and 150%, respectively.

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Improving the performance of porous radiant burners through use of sub-micron size fibers

Abstract

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