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Proceedings Paper

Conditions For Detecting Malfunctions Of Buried Heat Distribution Systems By Thermographic Methods
Author(s): M. D. Lyberg; R. Taesler; M. Mattsson
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Paper Abstract

In this paper is discussed the conditions for applying aerial or groundbased thermographic methods to the detection of sites of leaks or not properly functioning insulation on buried hot water or steam distribution pipes. A comparison is made between a set of climatic criteria for the application of thermographic methods and statistics from meteorological records. It is demonstrated how different climatic criteria may reduce the number of occasions in a year and the length in hours of every occasion where thermographic methods can be applied. Using an analytic model, an analysis is made of how different environmental factors affect the surface temperature profile above a buried pipe. The influence of factors such as thermal properties of the ground and rapid variations in the heat transfer mechanisms between the ground and the athmosphere are discussed.

Paper Details

Date Published: 1 January 1988
PDF: 6 pages
Proc. SPIE 0934, Thermosense X: Thermal Infrared Sensing for Diagnostics and Control, (1 January 1988); doi: 10.1117/12.968488
Show Author Affiliations
M. D. Lyberg, Swedish Institute for Building Research (Sweden)
R. Taesler, Swedish Meteorological Hydrological Institute (Sweden)
M. Mattsson, Mattsson Energi och Klimatkontroll (Sweden)


Published in SPIE Proceedings Vol. 0934:
Thermosense X: Thermal Infrared Sensing for Diagnostics and Control
Ronald D. Lucier, Editor(s)

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