친환경 파사드 설계지원도구를 통한 오피스의 자연채광 최적화

Abstract

Integrated sustainable design of building envelopes with optimization into the design process requires the analysis of environmental performances. With the parametric & associative design technology for assessing daylight and promoting visually comfortable spaces, a great potential exists for optimizing the performance of contemporary building façades. We investigates daylight metrics in randomized patterns of office façades with different window-to-wall ratios (WWR) and sun shading louver designs, such as vertical and horizontal devices. Climate-Based Daylight Modeling (CBDM) is applied as the assessment strategy and DIVA plug-in for Rhinoceros/Grasshopper is used for validation to effectively calculate daylight metrics based on the Radiance/Daysim engine. Useful Daylight Illuminace (UDI) and Daylight Glare Probability (DGP) are adopted as the dynamic daylight metrics to compare the design alternatives. This paper presents a parametrically driven design support system and proposes the guide matrix for optimized daylighting design. The matrix of this study suggest façades alternatives of office building in terms of daylight for the climate conditions of Incheon, Korea to reduce glare and lead to energy-saving buildings.