In recent years, the energy crisis, environmental protection and the improvement of living standards, have all called for Building energy efficiency, which has already become the common choice in global architectural community after a thorough consideration. So, what on earth are the Energy-efficient buildings, and what are the benefits, so that everyone is so concerned about them? What means does light environment design used in building have in the energy saving aspect? This article will make some simple introductions over the above several problems.
After a long period of time, people’s understanding of the concept of energy-saving building varied from the initial to save energy blindly, to focus on reducing heat loss, and now people come to emphasize improving energy efficiency in building. That is to say, energy saving building does not mean sacrificing comfort; on the contrary, it requires achieving high comfort more easily in a realistic way. It is generally believed that energy saving building refers to those that they can reduce energy consumption to the required level by improving the insulation properties of building envelope, taking heating and air-conditioning system operating efficiency and natural energy as well as technology measures, under the condition of ensuring the building functions and meet the indoor physical environment quality requirement. Meanwhile, when the heating and air conditioning measures are not taken, indoor physical environment of the buildings must meet a certain standard. Obviously, the biggest benefit of energy-efficient buildings is to reduce building energy consumption, thereby reducing maintenance costs. According to the Nordic experience, the inputs of energy-saving building are 3% higher than the general building at the beginning, but the maintenance costs can be reduced 60%.Building energy consumption in this article refers specifically to the building use energy consumption. In developed countries, building energy consumption generally accounts for 30%~40% of country energy consumption, while it accounts for 28% of total energy consumption in China. For the moment, China’s energy situation is quite grim, but our architecture energy saving level is quite lower.
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