Abstract
Windows are regarded as the primary object of energy efficiency in buildings because window is one of the major energy loss areas in building construction. Existing methods were not field measurements and were not enough to get the correct thermal transmittance. We used portable \(U_{g}\) measuring device on field and measured the thermal transmittance with low-E coated and uncoated double glazing panels in existing houses, apartments and buildings. In addition, we prepared four test benches and compared the insulation performance according to the construction conditions. In results, the insulation performance of double glazing panel with low-E coating is up to about 41 % higher than uncoated panel due to low-E coating inside and the glazing panel filled with about 90 % of argon gas decrease about 0.15 \(\hbox {W} \cdot \hbox {m}^{-2} \cdot \hbox {K}^{-1}\) than glazing panel filled with air gas. The measured results were compared with the theoretically calculated results according to DIN EN 673 to confirm the reliability of the analytical results. In this study, portable NETZSCH Uglass is used to increase the accuracy of calculation of thermal transmittance with various double and triple glazing panels. The paper analyzes the insulation performance of the double glazing panels in accordance with the construction conditions.
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References
G. Gan, Thermal transmittance of multiple glazing: computational fluid dynamics prediction. Appl. Therm. Eng. 21, 1583 (2001)
ISO 15099, Thermal performance of window, door, and shading devices detailed calculation (2003)
DIN EN 674, Glass in building-determination of thermal transmittance (U value)-guarded hot plate method (2011)
DIN EN 675, Glass in building-determination of thermal transmittance (U value)-heat flow meter method (2011)
DIN EN 673, Glass in building-determination of thermal transmittance (U value)-calculation method (2011)
Uglass-The mobile \(U_{g}\) value measurement device (NETZSCH Web, 2017). https://www.netzsch-thermal-analysis.com/en/products-solutions/thermal-transmission/uglass. Accessed 28 April 2017
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Special Issue: Advances in Thermophysical Properties.
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Kim, I., Frenzl, A., Kim, T. et al. Determination of Thermal Transmittance of Insulated Double Low-E Glazing Panel Using Portable Uglass Measuring Technique. Int J Thermophys 39, 19 (2018). https://doi.org/10.1007/s10765-017-2334-3
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DOI: https://doi.org/10.1007/s10765-017-2334-3