| Issue |
E3S Web Conf.
Volume 100, 2019
11th Conference on Interdisciplinary Problems in Environmental Protection and Engineering EKO-DOK 2019
|
|
|---|---|---|
| Article Number | 00082 | |
| Number of page(s) | 6 | |
| DOI | https://doi.org/10.1051/e3sconf/201910000082 | |
| Published online | 10 June 2019 | |
Thermal efficiency of the building envelope with the air layer and reflective coatings
1 Czestochowa University of Technology, Faculty of Civil Engineering, ul. Akademicka 3, 42-200 Czestochowa, Poland
2 Research Institute of Building Physics of the Russian Academy of Architecture and Building Sciences (NIISF RAASN), 127238, Моscow, Lokomotivnyj pr. 21, Russia
* Corresponding author: aujma55@wp.pl
Currently, when calculating the heat-shielding qualities of external enclosing structures, the ability of fencing surfaces to reflect the heat flux by radiation is not taken into account. All this leads to an underestimation of heat-shielding characteristics in comparison with reality. Studies have shown. that a number of factors affect the thermal protection of air layers - the difference in temperature on the surfaces of the interlayer, its thickness. But the most important is the coefficient of elimination of the air gap surface. The use of reflective heat insulation with a low emissivity on one of the surfaces of the air gap makes it possible to increase its thermal protection 2.5–3 times. The article presents the calculations of thermal protection of air gaps with different emissivity coefficients of surfaces and conclusions about the effectiveness of the use of reflective insulation.
© The Authors, published by EDP Sciences, 2019
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