The most pronounced effect of urbanisation on the microclimate of a region is the development of the Urban Heat Island （UHI）, which is the elevation of air temperature within the region with respect to adjoining rur...The most pronounced effect of urbanisation on the microclimate of a region is the development of the Urban Heat Island （UHI）, which is the elevation of air temperature within the region with respect to adjoining rural areas. There are many factors like coverage area, vegetation, soil moisture, street geometry, building materials, etc., which cause or modify the intensity of UI-II. The UHI in Kochi, a fast growing urban region in coastal South India, interlaced by a network of canals and wetlands which are part of the Vembanad Lake system, was investigated. The UHI during summer and winter periods were recorded through mobile traverses. The intensity of the heat island during summer was 2.2 K and during winter was 2.8 K. The heating and cooling rates in different locations within the region were also derived through stationary recorders installed at selected locations. The intensity of the UHI here is moderate compared to that observed in other cities in the region. It is inferred that the wetlands is controlling the intensity of the UHI here.展开更多
The urban microclimate has direct implications with regards to thermal comfort indoors as well as outdoors. In the tropics, the outdoor thermal comfort conditions during daytime are often far above acceptable comfort ...The urban microclimate has direct implications with regards to thermal comfort indoors as well as outdoors. In the tropics, the outdoor thermal comfort conditions during daytime are often far above acceptable comfort standards due to intense solar radiation and high solar elevations. This study aims to know effects of simple and fundamental building forms on microclimate and outdoor thermal comfort in a high dense tropical city, focusing on Dhaka, Bangladesh as a study city. Investigations are carried out on existing area and model areas with modified building forms （in respect of height and shape） on the microclimate as well as on outdoor thermal comfort during daytime in summer. This study has demonstrated that the model using less ground coverage and higher buildings can offer a better thermal climate than the models using maximum ground coverage in a high-density tropical city.展开更多
PART of the luxuriantly exotic area along the tropic of cancer, Yulin City, in the southeastern part of Guangxi Zhuang Autonomous Region, is blessed with an evergreen climate and abundant resources.
Design with ecology has been a newtrend of design in the world due to the globalenvironmental issues.Tropical coastal cities need to bedesigned according to ecological principles thanks totheir high visual and ecologi...Design with ecology has been a newtrend of design in the world due to the globalenvironmental issues.Tropical coastal cities need to bedesigned according to ecological principles thanks totheir high visual and ecological sensitivity.Ecological de-sign requires designers to respect environmental limita-tion and advantages and to create a diversity of habitat,and hence of opportunities for the coexistence of di-verse organisms (including man himself).This paper ex-pounds the characteristics of the approach,shows sometechniques and suggests the difficulties and some possi-ble ways for designing with ecology in China.展开更多
文摘The most pronounced effect of urbanisation on the microclimate of a region is the development of the Urban Heat Island （UHI）, which is the elevation of air temperature within the region with respect to adjoining rural areas. There are many factors like coverage area, vegetation, soil moisture, street geometry, building materials, etc., which cause or modify the intensity of UI-II. The UHI in Kochi, a fast growing urban region in coastal South India, interlaced by a network of canals and wetlands which are part of the Vembanad Lake system, was investigated. The UHI during summer and winter periods were recorded through mobile traverses. The intensity of the heat island during summer was 2.2 K and during winter was 2.8 K. The heating and cooling rates in different locations within the region were also derived through stationary recorders installed at selected locations. The intensity of the UHI here is moderate compared to that observed in other cities in the region. It is inferred that the wetlands is controlling the intensity of the UHI here.
文摘The urban microclimate has direct implications with regards to thermal comfort indoors as well as outdoors. In the tropics, the outdoor thermal comfort conditions during daytime are often far above acceptable comfort standards due to intense solar radiation and high solar elevations. This study aims to know effects of simple and fundamental building forms on microclimate and outdoor thermal comfort in a high dense tropical city, focusing on Dhaka, Bangladesh as a study city. Investigations are carried out on existing area and model areas with modified building forms （in respect of height and shape） on the microclimate as well as on outdoor thermal comfort during daytime in summer. This study has demonstrated that the model using less ground coverage and higher buildings can offer a better thermal climate than the models using maximum ground coverage in a high-density tropical city.
文摘PART of the luxuriantly exotic area along the tropic of cancer, Yulin City, in the southeastern part of Guangxi Zhuang Autonomous Region, is blessed with an evergreen climate and abundant resources.
文摘Design with ecology has been a newtrend of design in the world due to the globalenvironmental issues.Tropical coastal cities need to bedesigned according to ecological principles thanks totheir high visual and ecological sensitivity.Ecological de-sign requires designers to respect environmental limita-tion and advantages and to create a diversity of habitat,and hence of opportunities for the coexistence of di-verse organisms (including man himself).This paper ex-pounds the characteristics of the approach,shows sometechniques and suggests the difficulties and some possi-ble ways for designing with ecology in China.
