Thermal Performance of Vacuum Insulated Window Shutter Systems

Arman Hashemi, Mahmood Alam, Eugene Mohareb

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBNpeer-review


Windows are a major area of heat loss in buildings losing up to 10 times more energy compared to other building elements. Thermal shutters are used to improve the energy performance of windows in both hot and cold climatic conditions. The performance of thermal shutters however greatly depends on the thermal insulation and construction detailing, specifically cold-bridging, through the shutter, as well as between the shutter and window frames. This study evaluates the effects of cold-bridging, trickle ventilation and the size of the air cavity, between the vacuum insulated shutter and the window, on the performance of window thermal shutters. Thermal simulations are conducted in VOLTRA (Thermal analysis software) to assess the conditions. The results indicate that although thermal shutters reduce heat-loss through windows, their performance could be significantly affected by cold-bridging by up to 90%. The additional thermal resistance due to the air cavity and the ventilation through the trickle vent appeared to be much less significant compared to the effects of thermal bridging.
Original languageEnglish
Title of host publicationZero Energy Mass Custom Home (ZEMCH 2019) International Conference
Publication statusPublished - Mar 2020
EventZEMCH 2019 International Conference
- Seoul, Korea, Republic of
Duration: 26 Nov 201928 Nov 2019

Publication series

NameZEMCH Inteternational Conference Proceedings
PublisherZEMCH Network
ISSN (Print)2652-2926


ConferenceZEMCH 2019 International Conference
Country/TerritoryKorea, Republic of

Bibliographical note

© 2019 by the authors. Submitted for possible open access publication under the terms and conditions of the Creative Commons Attribution (CC BY) license (


  • Windows
  • Thermal shutter
  • Vacuum insulation
  • Thermal bridging
  • Heat loss


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