Development of Window-Mounted Air Cap Roller Module

Abstract

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.

Development of a Dimming Lighting Control System Using General Illumination and Location-Awareness Technology

“…This study proposes a dimming lighting control system using general lighting and occupant location-awareness technology, and conducted a performance evaluation for lighting energy reduction and light environment improvement using a full-scale test bed. For this purpose, the performance evaluation method of this study was set as follows based on related studies [45,46].…”

Preliminary Study on the Performance Evaluation of a Light Shelf Based on Reflector Curvature

“…The measurement error rate of the system was within 2%. Based on guidance from relevant studies [21,22], three external light environments were considered in this study: summer, mid-season, and winter. The external illuminance values with respect to time period and meridian altitude are shown in Table 5.…”