Impact of Window Operation Behaviours on Cooling Load of High-rise Residential Buildings in Hong Kong

Energy saving can be achieved with proper natural ventilation from window opening. Window operation behaviours affect the cooling load by introducing fresh air and interacting with the operation of air conditioners. However, there is limited knowledge on how window operation behaviours influence the cooling load in high-rise buildings. This paper thus examines quantitatively the impact of window operation on cooling load. The research was conducted through building simulation compared with a post-occupancy evaluation survey with a 40-storey typical high-rise residential building in Hong Kong. The results reveal up to 11% variance of cooling load among the residential flats with different window operation behaviours.