Environmental Benefit Analysis Of Green Buildings Based On Life-cycle Cost Theory

Currently, global environment problem increasingly, vigorously develop the strategy of sustainable development has become the important subject of all the countries, what’s more, the development of green architecture is an important part of sustainable development. In our country, serious condition of energy shortage and building energy consumption, high efficiency and energy saving implementation of green architecture is the essential condition of our country’s economic sustainable development. To promote the development of green building and explore the market, it is quite important to the research of references and of the system of green building evaluation. But, at president, the evaluation of the green building mostly stay in the economic benefit evaluation and index system of environmental evaluation research, consider environmental benefits is still very weak.This article firstly analyzes the concept and characteristic of green architecture, and then, based on the life-cycle-cost theory and externality theory, builds the green building environmental efficiency evaluation framework and evaluation index system, in order to provide theoretical foundation for the green building environmental efficiency evaluation. Based on the analysis of environmental benefits of the green building, this article deduced the environmental benefits estimates formula of energy conservation technology and water saving technology. A case analysis of a green building project has done at the last. Combining with the environmental evaluation form, they both make up the environmental evaluation system for green building, and to specify the behavior of main bodies as well as to initiate the technology Innovation for green building in China.