Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Development of Window-Mounted Air Cap Roller Module

Version 1 : Received: 7 July 2018 / Approved: 9 July 2018 / Online: 9 July 2018 (13:44:24 CEST)

A peer-reviewed article of this Preprint also exists.

Lee, H.; Seo, J. Development of Window-Mounted Air Cap Roller Module. Energies 2018, 11, 1909. Lee, H.; Seo, J. Development of Window-Mounted Air Cap Roller Module. Energies 2018, 11, 1909.


While previous research has shown the use of attachable air-caps on windows to efficiently reduce a building’s energy consumption, the air-caps considered had to be attached to the entire window’s surface, thus limiting the occupants’ view and creating the inconvenience of needing to detach and attach the air-caps. In this study, a window-mounted air-cap roller module using Velcro tape that may be easily attached, detached, and rolled up or down was developed and performance tested in a full-scale test bed. It was found that as the area of the air-caps attached on a window increased, the required indoor lighting energy increased. However, the window insulation improved, thus reducing the cooling and heating energy needed. Attaching the air-caps to the entire window surface effectively reduced the building’s energy consumption, but views through the window may be disturbed. Thus, the developed window-mounted air-caps enable an occupant to reduce the building energy consumption and maintain their view according to their need. The findings of this study may contribute to a reduction in building energy consumption without sacrificing a pleasant indoor environment. Further studies may be needed to verify their efficacy under varying indoor and outdoor conditions.


air cap; roller module; energy saving; performance evaluation; building envelope


Engineering, Architecture, Building and Construction

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