(1) the energy consumption of old buildings is very large. Now, the first thing we should stress is the utilization of solar energy and geothermal energy. Such buildings can achieve very low energy consumption. Compared with the existing buildings, green buildings can reduce energy consumption by 70% to 75%.
(2) the general construction adopts commercial production technology, and the standardization and industrialization of the construction process lead to similar architectural features in the north and south. Green buildings emphasize the use of local culture, local raw materials, respect for local natural and local weather conditions, so that the style is fully localized.
(3) the traditional buildings are closed, completely isolated from the natural environment, and the indoor environment is often unhealthy. Internal and external means of green building can be automatically adjusted to adapt to climate change.
(4) the old building is in the construction process or in the process of using environmentally responsible, and emphasizes the use of green building from raw materials development, processing and transportation, until the building was abandoned and demolished in the whole process. The most important problem is that the cost of green buildings, because of a series of sketches in the hierarchy, to achieve 60% energy saving standards of construction, the cost is not high, but the increase of the basis of the original construction cost of 5 of the 7 percentage points, while the cost is expected to increase from 5 to 8 years to recover.
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