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首页> 外文期刊>Building and Environment >Thermal insulation and cost effectiveness of green-roof systems: An empirical study in Hong Kong
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Thermal insulation and cost effectiveness of green-roof systems: An empirical study in Hong Kong

机译：屋顶绿化系统的隔热和成本效益：香港的一项实证研究

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摘要

Hong Kong is a densely populated city with high density of skyscrapers and the population is typically concentrated on 30% of the land. The adoption of skyscrapers is therefore common to maximize its capacity. As a result, the need of open space and greenery in our built environment is thus often neglected. In recent years, many building professionals promote green-roof systems to increase green space. This paper investigates the effectiveness of using green-roof systems. Questionnaire surveys and interview discussions are conducted. It is found that the questionnaire respondents are interested in implementing green-roof systems and understanding their environmental, economical and social benefits. Three case studies are also conducted to show the effectiveness of green roofs thermal insulation. The results show that green roofs can reduce the inside temperature by up to 3.4 degrees C. However, the respondents were not willing to invest a large amount of money for green-roof systems. It is suggested that governments should take leading positions to promote green-roof systems. This paper can provide insights on the use of green roofs in Hong Kong and around the world focusing on cost effectiveness and thermal insulation effectiveness. (C) 2016 Elsevier Ltd. All rights reserved.
机译：香港是一个人口稠密的城市，摩天大楼密度很高，人口通常集中在30％的土地上。因此，采用摩天大楼可以最大化其容量。结果，在我们的建筑环境中经常需要开放空间和绿化。近年来，许多建筑专业人士推广绿化屋顶系统以增加绿色空间。本文研究了使用绿色屋顶系统的有效性。进行问卷调查和访谈讨论。调查发现，受访者对实施绿色屋顶系统以及了解其环境，经济和社会效益感兴趣。还进行了三个案例研究，以显示绿色屋顶隔热的有效性。结果表明，绿色屋顶可以将内部温度降低多达3.4摄氏度。但是，受访者不愿意为绿色屋顶系统投入大量资金。建议政府应在促进绿化屋顶系统方面发挥领导作用。本文可提供有关香港和世界各地使用绿色屋顶的见解，着重于成本效益和隔热效果。 （C）2016 Elsevier Ltd.保留所有权利。

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