Metoda měření teplotních polí v malých uzavřených prostorách pomocí termovize

The temperature fields measurenment method in the air in small closed spaces using an infrared camera

abstrakt

en

The article is focused on the temperature fields measurement method in the air in small closed spaces using an infrared camera. This method is based on the visualization of temperature fields on an auxiliary material which is inserted into the non-isothermal air flow in a research area. In small closed spaces where is impossible to put the measuring equipment due to various reasons, it is necessary to visualize the temperature fields through a window. This window must be permeable for infrared radiation of known properties, especially the transmissivity. As an auxiliary material for the visualization of temperature fields in these experiments, the ordinary office paper with high emissivity value was chosen and the viewing window was made of a polyethylene. The presented method for the measurement of temperature fields in the air can be applied mainly in closed spaces where is difficult to situate the infrared camera (due to field of view), in spaces where the infrared camera restricts the flowing air or where is aggressive or too hot environment (a potential damage of infrared camera), etc. In this article the parameter analysis, which is important for a particular application, is performed and an example of temperature fields measurement in closed space is presented. This method can be used in cooling and heating design of means of transport, mostly for cabins of cars and trucks.

Článek se zabývá metodou měřeních teplotních polí ve vzduchu v malých uzavřených prostorách pomocí termovize. Tato metoda je založena na vizualizaci teplotního pole na pomocném materiálu, který je vložen do neizotermního proudu vzduchu v měřené oblasti. V malých uzavřených prostorách, kde je nemožné vložit měřicí zařízení dovnitř je nutné použít měřicí průzor. Tato měřicí metoda je vhodná pro měření teplotních polí například v automobilu.

The article is focused on the temperature fields measurement method in the air in small closed spaces using an infrared camera. This method is based on the visualization of temperature fields on an auxiliary material which is inserted into the non-isothermal air flow in a research area. In small closed spaces where is impossible to put the measuring equipment due to various reasons, it is necessary to visualize the temperature fields through a window. This window must be permeable for infrared radiation of known properties, especially the transmissivity. As an auxiliary material for the visualization of temperature fields in these experiments, the ordinary office paper with high emissivity value was chosen and the viewing window was made of a polyethylene. The presented method for the measurement of temperature fields in the air can be applied mainly in closed spaces where is difficult to situate the infrared camera (due to field of view), in spaces where the infrared camera restricts the flowing air or where is aggressive or too hot environment (a potential damage of infrared camera), etc. In this article the parameter analysis, which is important for a particular application, is performed and an example of temperature fields measurement in closed space is presented. This method can be used in cooling and heating design of means of transport, mostly for cabins of cars and trucks.

Termovize, průzor, teplotní pole

Infrared camera, visor, temperature field

03.09.2012

Swiss Federal Insitute of Technology ETH Zurich

Zurich, Switzerland

ICCCS 2012 International symposium on contamination control

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43–43

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