Thermographic studies of refrigerated bodies allow for the registration of thermal bridges (location, size) and enable a qualitative assessment of the heat flux (small, medium, large, very large), however, there is a lack of methods for determining the heat flux Q W/m. This paper presents a method for determining the heat flux within a thermal bridge based on a thermal imaging photograph. The studies were conducted under conditions of refrigerated body insulation tests in order to interpret the scale of insulation material destruction. A method of comparing temperatures recorded on the surface of a plate subjected to a known heat flux and the surface of a control plate that was not subjected to a heat flux was used.A thermal imaging camera is a device that records the intensity of electromagnetic radiation emitted by any body whose temperature is higher than 0K. Based on this radiation and numerous dependencies, the microprocessor calculates the surface temperature. (…)
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Source: Logistyka Magazine