Choudhury, R and Kayal, Tarun Kumar and Chakravarty, Mithiles (1990) Performance of materials used in the walls of intermittent ceramic kilns. Energy, 15 (9). pp. 803-809. ISSN 0360-5442

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Abstract

In an intermittent kiln, the heat losses for heat storage in the walls and for convection and radiation from the outer wall surface account for a large share of fuel consumption in the firing cycle. For a single wall material, these losses have been determined by numerical solution of an unsteady heat-conduction equation. With an increase in the thickness of the wall, the total heat loss decreases and remains nearly constant for any thickness beyond a critical thickness Le. For construction of an intermittent kiln, the investment can be minimized if Le is used as the wall thickness. For single wall materials, QT,min and Le are correlated with dimensionless groups in nomographs. The utility of these nomographs for unknown wall materials has been verified. The economic effectiveness is defined in order to compare the performance of insulating materials at their critical thicknesses. Fire-brick powder is found to be the most economically advantageous single wall material among those used.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	UNSPECIFIED
Depositing User:	Mrs Bula Ghosh
Date Deposited:	06 Dec 2013 11:40
Last Modified:	28 Feb 2016 15:33
URI:	http://cgcri.csircentral.net/id/eprint/2363

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