Paper Conference

Proceedings of ASim Conference 2016: 3rd Asia conference of IBPSA-China, Japan, Korea

     

Analysis on the Level of Annual Heating/Cooling and Lighting Load of a Building according to Varying Projection Factors of External Horizontal Solar Shades

Jong-Hwan Ko

Abstract: Along with the growing concern in buildings of reduced energy consumption, the installation of effective solar shading device is being spotlighted. The solar shading device has an advantage of effective control over energy consumption in buildings without changing the envelope of each building. The movable solar shading devices developed to get over limitations of fixed solar shading devices intend to provide residents with thermal and visual pleasantness in a way of changing the length of sunshade or the angle of slit depending on the position of the sun. This study was designed to explore an effective operation of movable solar shading device for which the design of solar shading device and the cooling and lighting loads in building varying according to the presence of occupants were examined. Above all, the length of the extension of solar shading was calculated according to the solar angle and average height of windows. Based on the calculated length of the extension of solar shading, the applicability of solar shadings and the cooling and lighting loads to be varying according to the presence schedule of occupants were examined. For the application of the presence of occupants to the examination, the presence schedule of occupants determined by the survey conducted through questionnaires inquired the presence of occupants in buildings at each time was used. For the application of the operation of movable solar shading device to be changing in accordance with the presence of occupants, the EMS module of EnergyPlus was used. The ways of controlling movable solar shading device to be presented by results of the examinations to be conducted in this study are thus expected to become as the one of environmentally friendly architectural elements.
Keywords: Horizontal shading, Projection factor, Heating and cooling loads, Lighting loads
Paper:
asim2016_328