Impact of Climate Change on Ventilation Load in Buildings of Hong Kong
By influencing its air conditioning load, the energy consumption of buildings may be seriously affected by the climate change, which is considered as a global problem in these days. The issue is more serious on the ventilation load, because it varies directly with local weather condition. Research on how the ventilation load of buildings responds to climate change is of great significance, especially in the coastline subtropical region like Hong Kong. This paper investigated detailed impacts of climate change on buildings’ ventilation load with the hourly meteorological data from 1978 to 2007. Results show that the climate warming increases both sensible and dehumidification parts of ventilation load. The dehumidification load, which already occupies about 80％, increases with a rate about twice of the sensible one. Moreover, the serious Urban Heat Island (UHI) effect causes a much higher growth rate of ventilation load at night, which is about three times compared to that in daytime. This research project thus suggested possible ways to avoid negative changes of the ventilation load. Besides, reducing the UHI effect by better urban planning also benefits the buildings with long air-conditioning operation time in Hong Kong.
ventilation load sensible load dehumidification load climate change
Ronghui Qi Lin Lu Hongxing Yang
Renewable Energy Research Group, Department of Building Services Engineering, The Hong Kong Polytech Renewable Energy Research Group, Department of Building Services Engineering, The Hong Kong Polytech
国际会议
4th International Symposium on Heat Transfer and Energy Conservation(第四届传热与节能国际研讨会 ISHTEC2012)
广州
英文
1-5
2012-01-06（万方平台首次上网日期，不代表论文的发表时间）