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Sustainable Cities In The 21st Century

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In 21st century, it is believed that cities must be greener, trendy and smarter. Hence, for many developing countries in the world, promoting sustainable cities has become a key issue nowadays. The concepts of sustainability consist of three pillars, Economy, Society and environment, in which both economy and society are constrained by environmental limits. The term sustainable is getting a balance between 3 pillars (Economy, Society and environment) when developing cities. The concept of sustainability is a broad global issue comprising different interrelated studies about these 3 pillars. The sustainable Development means "development that meets the needs of the present without compromising the ability of future generations to meet their …show more content…

But, organizational, financial and social barriers stand in the way of immediate action will obstruct the progress of applying green building, these problems will be discuss later. Now, this review will discuss and introduce 3 main topics; what is included in green building design, what is the barriers who will obstruct the progress of applying green building and…. As mentioned above, buildings are contributed for at least 40% of energy use in most countries. For instance, building aspect of China consumes about 20% of the total energy consumption. So, it is essential to reduce the energy consumption .The picture below sort out the Data from Enerdata (A Company who provides energy data, forecasts, market reports, research, news, consulting and training on the global energy industry) showed that the energy consumption of china is 3101 Mtoe( Tonne of oil equivalent (toe) is a unit of energy defined as the amount of energy released by burning one tonne of crude oil) which is the highest one in the world. So, the government of china has developed all kind of energy codes to improve the energy efficiency of building since 1980s. Different kind of policies were issued in china to encourage the use of energy-saving technologies among them, including enforcing energy consumption constraints on new projects, increasing the budget for energy consumption control and providing financial support for energy-saving renovation and application of renewable

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