Conditions for the use of infrared camera diagnostics in energy auditing of the objects exposed to open air space at isothermal sky

• Autorzy: Kruczek T.

Identyfikatory

DOI

10.1515/aoter-2015-0005

• Języki publikacji: EN

Abstrakty

EN

Convective and radiation heat transfer take place between various objects placed in open air space and their surroundings. These phenomena bring about heat losses from pipelines, building walls, roofs and other objects. One of the main tasks in energy auditing is the reduction of excessive heat losses. In the case of a low sky temperature, the radiation heat exchange is very intensive and the temperature of the top part of the horizontal pipelines or walls is lower than the temperature of their bottom parts. Quite often this temperature is also lower than the temperature of the surrounding atmospheric air. In the case of overhead heat pipelines placed in open air space, it is the ground and sky that constitute the surroundings. The aforementioned elements of surroundings usually have different values of temperature. Thus, these circumstances bring about difficulties during infrared inspections because only one ambient temperature which represents radiation of all surrounding elements must be known during the thermovision measurements. This work is aimed at the development of a method for determination of an equivalent ambient temperature representing the thermal radiation of the surrounding elements of the object under consideration placed in open air space, which could be applied at a fairly uniform temperature of the sky during the thermovision measurements as well as for the calculation of radiative heat losses.

Słowa kluczowe

EN

thermovision diagnostics; infrared camera; radiative ambient temperature; open air space

PL

diagnostyka termowizyjna; kamera termowizyjna; radiacyjna temperatura otoczenia; otwarta przestrzeń

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2015
• Tom: Vol. 36, no. 1
• Strony: 67--82
• Opis fizyczny: Bibliogr. 24 poz., rys., wz., wykr.

Twórcy

autor

Kruczek T.

• Silesian University of Technology, Institute of Thermal Technology Konarskiego 22, 44-100 Gliwice, Poland

Bibliografia

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Uwagi

EN

The scientific work was supported by Faculty of Energy and Environmental Engineering of the Silesian University of Technology within the statutory research.