Conditions For Detecting Malfunctions Of Buried Heat Distribution Systems By Thermographic Methods

M. D. Lyberg; R. Taesler; M. Mattsson

doi:10.1117/12.968488

1 January 1988 Conditions For Detecting Malfunctions Of Buried Heat Distribution Systems By Thermographic Methods

M. D. Lyberg, R. Taesler, M. Mattsson

Proceedings Volume 0934, Thermosense X: Thermal Infrared Sensing for Diagnostics and Control; (1988) https://doi.org/10.1117/12.968488
Event: 1988 Technical Symposium on Optics, Electro-Optics, and Sensors, 1988, Orlando, FL, United States

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.

Citation Download Citation

M. D. Lyberg, R. Taesler, and M. Mattsson "Conditions For Detecting Malfunctions Of Buried Heat Distribution Systems By Thermographic Methods", Proc. SPIE 0934, Thermosense X: Thermal Infrared Sensing for Diagnostics and Control, (1 January 1988); https://doi.org/10.1117/12.968488

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