| Issue |
E3S Web of Conf.
Volume 396, 2023
The 11th International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings (IAQVEC2023)
|
|
|---|---|---|
| Article Number | 04006 | |
| Number of page(s) | 5 | |
| Section | Nearly Zero Energy Buildings and Smart Energy community (Micro to Macro-scale) | |
| DOI | https://doi.org/10.1051/e3sconf/202339604006 | |
| Published online | 16 June 2023 | |
Experimental study on insulation performance of structured-core transparent vacuum insulation panels for different core materials
1 Graduate School of Engineering, Hokkaido University, N13-W8, Kita-ku, Sapporo, 060-8628, Japan
2 Faculty of Engineering, Hokkaido University, N13-W8, Kita-ku, Sapporo, 060-8628, Japan
* Corresponding author: eke.hirvonen@gmail.com
The conversion of existing buildings to ZEH and ZEB requires increased thermal insulation, in which the insulation of window surfaces is particularly important. This study focused on measuring and comparing the changes in thermal conductivity of transparent vacuum insulation panels (TVIP), which could be used as simple and easy to install insulation to building windows. These changes were later compared with the results obtained from previous studies conducted by other research group members. The measured thermal conductivity values ranged between 0.017 W/(m*K) of the best performing frame-type with the thickness of 5.1 mm, and 0.011 W/(m*K) of the best performing double-layered peak-type core with the thickness of 7.8 mm. The calculated U-values of the samples ranged between 4.1 W/(m2*K) and 1.4 W/(m2*K). From the experimental results it could be seen that changing the core composition had a larger effect on the overall thermal conductivity of the sample than the added parameters of coating, getter agent, and heating had. These parameters, however, have had a substantial effect on the longevity of the vacuum inside the sample envelopes, and will thus be experimented further.
Key words: Transparent vacuum insulation panel / thermal insulation retrofit / window insulation / simultaneous vacuuming and thermal conductivity measurement
© The Authors, published by EDP Sciences, 2023
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