Economic Analysis Of Green Buildings Based On The Whole Life Cycle Theory

Since the late1970’s,with the worsening environmental pollution, energy crisis, land degradation, ecological imbalance and other issues, the relationship between architecture and environment requires more and more attention and care from the whole world. People are looking for a kind of construction industry development model to guarantee environmental protection and resource conservation, green building emerges as the times require in this environment. Green Building started relatively late in our country.Yet along with the rapid development of China’s urbanization is speeding, construction industry of high energy consumption is difficult to change is imperative.At present, the research of green building technology has changed from light green towards green in our country. But the pace of development of green building is still not optimistic. Relevant economic analysis for the whole life cycle cost of green buildings is rarely. The previous incremental investment green building is giant; it has become the biggest obstacle to the rapid development of green building. In the investor’s perspective, they fear that the huge incremental investment will become the bubble and it is difficult to obtain high return. At the same time, they also concern whether the consumer would "pay the bill". The following will be mainly from the perspective of investors,using the whole life cycle theory and doing specific analysis on economy of the incremental cost of green building in the early investment. The paper also with concrete examples, analyze profitability of investment projects.Paper begins with introduction of green building economy for the whole life cycle of the background research and research significance, followed by introduction of green building evaluation methods at home and abroad, and study on green building evaluation of domestic scholars. The evaluation of China’s current implementation of the standard is the evaluation standard of green building promulgated in2006the state. Secondly, starting from the concept of green buildings, then introducing the theory of the whole life cycle cost of green building. Comprehensive analysis of green building whole life cycle cost is the main characteristic of phase diversity, diversity and computational complexity. Third, building green buildings economic evaluation model and mainly using financial evaluation index of recovery capability analysis. Once again, calculating whole life cycle green building from the aspects of energy saving, water saving, land saving, material saving, environmental protection, the incremental cost and incremental benefit. This paper focuses on energy-saving and Water-saving Benefit-Cost analysis for a more detailed study. Finally, with the two star green building examples of my internship, according to the economic evaluation as the model, calculating the incremental net present value of investment projects, the incremental dynamic investment recovery period and incremental investment internal rate of return.Paper does analysis on economics of the project through the above indicators. According to the project cash flow data, finding out the effect factors of recovery ability, doing sensitivity analysis the specific, determining the main factors, in order to provide to investors, government and various stakeholders to reduce cost, accelerate the development of green building advice.