HVAC system energy consumption difference and cause analysis for typical public buildings in US, Japan and China’s Hong Kong

Presents some researches on public building HVAC energy consumption investigation in the three geographical regions in recent years. Chooses one of this kind of building in each region to perform a comparison between them. The data obtained show that although these three buildings all applies electric-chillers and VAV all-air system, there are huge differences in their air conditioning and whole building energy consumption intensity. Besides climate and system operating time are different, some key factors in design have important effect on operating energy consumption.