오피스 건물에 적용된 다층형 이중외피의 풍압과 실내 · 외 온도차에 의한 환기량 변화 분석

• Published in: KIEAE Journal Vol. 15; no. 2; pp. 123 - 131
• Main Authors: 송치호(Song, Chi-Ho), 김태연(Kim, Teayeon), 이승복(Leigh, Seung-Bok)
• Format: Journal Article
• Language: Korean
• Published: 한국생태환경건축학회 2015
• Subjects: 건축공학; 자연환기; Natural Ventilation; 다층형 이중외피; 이중외피; CFD 시뮬레이션; Multi-Story Type Double Skin Facade; Double Skin Facade; CFD Simulation; CFD
• ISSN: 2288-968X; 2288-9698
• DOI: 10.12813/kieae.2015.15.2.123

Purpose : Improvement of indoor thermal comfort and reduction of the energy consumption in building can be obtained by applying a double skin facade system. In order to achieve effectively this purpose, design team would have to perform easy and appropriate performance analysis for making better design decision during the design process. Method : This paper focus on the natural ventilation performance of a multi-story type double skin facade with main causes which are pressure difference according to the wind and temperature difference between indoor and outdoor (Buoyancy Effect). Using this main causes, the natural ventilation ratio of wind effect-to-buoyancy effect in cavity of multi-story type double skin facade were analyzed through the performance analysis results of CFD (Computational Fluid Dynamics) simulation. Result : When the wind velocity was 2m/s, the ventilation rate in the cavity was highest. If wind velocity was slower than 2m/s wind velocity, buoyancy effect has more influence on the ventilation rate in the cavity, and if wind velocity was faster than 2m/s wind velocity, wind effect has more influence on the ventilation rate in the cavity.