Thermal improvements of box-window using shading attachments. Hot-box measurements
This research explores shading potential for improving the thermal properties of a box-window. Two different types of shades along with three placements were considered. Ten configurations were tested in a hot-box apparatus and compared to base window performance. Condensation issues that may arise...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-12-01
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| Series: | Developments in the Built Environment |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666165923000674 |
| _version_ | 1797387777049886720 |
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| author | Cezary Misiopecki Steinar Grynning Arild Gustavsen |
| author_facet | Cezary Misiopecki Steinar Grynning Arild Gustavsen |
| author_sort | Cezary Misiopecki |
| collection | DOAJ |
| description | This research explores shading potential for improving the thermal properties of a box-window. Two different types of shades along with three placements were considered. Ten configurations were tested in a hot-box apparatus and compared to base window performance. Condensation issues that may arise after shading installation were also studied.Measurements showed that shading installed along with the original box-window has a positive impact on the window thermal performance. The highest U-value reduction by 35% (from 1.9 to 1.0 W/m2K) was achieved by a roller-shade with low-emissivity layer and constrained airflow on shade perimeter, installed inside the window recess. Temperature analysis showed a higher risk of condensation on the indoor window surface due to shade introduction on the indoor side of the window.Shading placement within the box-window gave improvements of 34% (reduced U-value from 2.0 to 1.3 W/m2K) for reflective roller-shades placed between the window frames. Shades in this position do not increase the risk of condensation on the indoor surface of the window. The probability of condensation inside the box-window may be lowered by draught-proofing indoor frames and maintaining ventilation through the outdoor frame.Shades proved to be effective at improving the thermal properties of box-windows. |
| first_indexed | 2024-03-08T22:31:01Z |
| format | Article |
| id | doaj.art-1460166b146f470e8c69c7554e0c2d2a |
| institution | Directory Open Access Journal |
| issn | 2666-1659 |
| language | English |
| last_indexed | 2024-03-08T22:31:01Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Developments in the Built Environment |
| spelling | doaj.art-1460166b146f470e8c69c7554e0c2d2a2023-12-18T04:24:57ZengElsevierDevelopments in the Built Environment2666-16592023-12-0116100185Thermal improvements of box-window using shading attachments. Hot-box measurementsCezary Misiopecki0Steinar Grynning1Arild Gustavsen2Department of Architectural Design, History and Technology, Norwegian University of Science and Technology (NTNU), NO-7491, Trondheim, Norway; Corresponding author. Department of Architectural Design, History and Technology, NTNU, Alfred Getz vei 3, 7491, Trondheim, Norway.Department of Materials and Structures, SINTEF Building and Infrastructure, NO-7465, Trondheim, NorwayDepartment of Architectural Design, History and Technology, Norwegian University of Science and Technology (NTNU), NO-7491, Trondheim, NorwayThis research explores shading potential for improving the thermal properties of a box-window. Two different types of shades along with three placements were considered. Ten configurations were tested in a hot-box apparatus and compared to base window performance. Condensation issues that may arise after shading installation were also studied.Measurements showed that shading installed along with the original box-window has a positive impact on the window thermal performance. The highest U-value reduction by 35% (from 1.9 to 1.0 W/m2K) was achieved by a roller-shade with low-emissivity layer and constrained airflow on shade perimeter, installed inside the window recess. Temperature analysis showed a higher risk of condensation on the indoor window surface due to shade introduction on the indoor side of the window.Shading placement within the box-window gave improvements of 34% (reduced U-value from 2.0 to 1.3 W/m2K) for reflective roller-shades placed between the window frames. Shades in this position do not increase the risk of condensation on the indoor surface of the window. The probability of condensation inside the box-window may be lowered by draught-proofing indoor frames and maintaining ventilation through the outdoor frame.Shades proved to be effective at improving the thermal properties of box-windows.http://www.sciencedirect.com/science/article/pii/S2666165923000674WindowWindow attachmentsShadingCellular shadeRoller-shadesBox-window |
| spellingShingle | Cezary Misiopecki Steinar Grynning Arild Gustavsen Thermal improvements of box-window using shading attachments. Hot-box measurements Developments in the Built Environment Window Window attachments Shading Cellular shade Roller-shades Box-window |
| title | Thermal improvements of box-window using shading attachments. Hot-box measurements |
| title_full | Thermal improvements of box-window using shading attachments. Hot-box measurements |
| title_fullStr | Thermal improvements of box-window using shading attachments. Hot-box measurements |
| title_full_unstemmed | Thermal improvements of box-window using shading attachments. Hot-box measurements |
| title_short | Thermal improvements of box-window using shading attachments. Hot-box measurements |
| title_sort | thermal improvements of box window using shading attachments hot box measurements |
| topic | Window Window attachments Shading Cellular shade Roller-shades Box-window |
| url | http://www.sciencedirect.com/science/article/pii/S2666165923000674 |
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