权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Analysis of thermal environment in building, district, urban and regional scale and its application to Asian Megacities

建筑、地区、城市和区域尺度的热环境分析及其在亚洲特大城市的应用

基本信息

批准号：
15206060
负责人：
HANAKI Keisuke
金额：
$ 27.46万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2006
项目状态：
已结题

项目摘要

Field survey and simulation with various scales were conducted for thermal environment of Asian mega cities, and mitigation options were discussed.Building information was obtained by analysis of photographs with a fish-eye lens in field survey in Chongqing, China for calculation of thermal environmental index. This method is useful in the region where geographic information is limited. Heat environment was surveyed in Cheong-gye stream, Seoul City, which is well known as restored stream in urban area. Improvement of thermal environment was observed by this restoration work. Individual difference in thermal comfort was analyzed.Influence of atmosphere on remote sensing data was corrected to obtain surface temperature.Thermal environment of Chongqing was analyzed with applying RAMS with input of land use data from remote sensing and anthropogenic heat discharge based on energy statistics. By comparing with observed meteorological data, it was verified that built-in of a canopy model into RAMS improved the simulation results in Chongqing. Effect of future development of Chongqing with doubled population and doubled urban area was estimated by the proposed model. Temperature increase in newly developed area and existing urban area will be about 5 degree and 1 degree, respectively. Area of temperature higher than 40 degree during daytime and higher than 30 degree during nighttime will be expanded by 2.4 times and 3.7 times, respectively. Various mitigation options were predicted by this simulation.District scale simulation was conducted for Taipei. Simulation considering change of heat rejection from air-conditioner with various time showed that temperature increase due to this heat rejection is up to 1.8 degree near the building. Effect of introduction of cooling tower to improve heat environment in night time and application of water mist spray and water film on the wall with photo catalyst were evaluated.

对亚洲特大城市的热环境进行了不同尺度的实地调查和模拟，并探讨了缓解方案；通过对重庆市实地调查中使用鱼眼镜头拍摄的照片进行分析，获得了建筑信息，中国用于计算热环境指数。这种方法在地理信息有限的地区很有用。对首尔市清溪溪的热环境进行了调查，该溪流被称为市区修复溪流。通过这次修复工作，观察到热环境的改善。分析了热舒适性的个体差异，修正了大气对遥感数据的影响，得到了地表温度，利用基于能量统计的土地利用数据和人为热排放数据，应用RAMS对重庆市的热环境进行了分析。通过与实测气象资料的对比，验证了RAMS中内置的冠层模型改善了重庆地区的模拟结果。利用该模型对人口翻倍、城市面积翻倍的重庆市未来发展效果进行了估算。新区和老城区的气温将分别上升5度和1度左右。白天40度以上和夜间30度以上的地区将分别扩大2.4倍和3.7倍。模拟结果预测了不同的缓解方案，并以台北地区为例进行了区域尺度模拟。考虑空调散热量随时间变化的模拟计算表明，建筑物附近因这种散热而产生的温升高达1.8度。评价了引入冷却塔改善夜间热环境的效果，以及光触媒在墙面上应用细水雾喷雾和水膜的效果。