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Proceedings Paper

Surveying and damping heat loss from machines with high surface temperatures: thermography as a tool
Author(s): Thomas Perch-Nielsen; Otto Paulsen; Christian Drivsholm
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Paper Abstract

Work within the process industry is often carried out on machines with high surface temperatures (above 50 degree(s)C). This often gives rise to poor indoor climate with an unsatisfactory thermal climate for staff. These problems can be solved or reduced by radiation screening. In practice, light foil materials (films) will often prove a good and inexpensive solution for screening. However, these types of materials have varying radiation properties. A method has been evolved to evaluate quantitatively the various materials' capacity for heat radiation screening. The method is based on use of a thermographic camera. The results are compared with an indoor climate analyzer for asymmetric radiation measurements, and show good agreement. Furthermore, on the background of laboratory measurements, thermography has also been employed to ascertain heat loss from process machines. This has been used to calculate convection flows for use in designing exhaust hoods. Laboratory measurements prove that for surfaces of a simple geometry and with surface temperatures over 50 degree(s)C the heat loss can be ascertained with an accuracy of approx. 10%. These experiments were carried out at Lindab Riscancos laboratory in Farum and DTI's laboratory for testing radiators during spring 1990, as a link in a larger project concerning improvement of thermal working conditions in industrial dye works. The project is financed by the Danish Ministry of Energy.

Paper Details

Date Published: 1 March 1991
PDF: 11 pages
Proc. SPIE 1467, Thermosense XIII, (1 March 1991); doi: 10.1117/12.46434
Show Author Affiliations
Thomas Perch-Nielsen, Danish Technological Institute (Denmark)
Otto Paulsen, Danish Technological Institute (Denmark)
Christian Drivsholm, Danish Technological Institute (Denmark)

Published in SPIE Proceedings Vol. 1467:
Thermosense XIII
George S. Baird, Editor(s)

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