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Building Energy Saving and Luminous Environment Design

In recent years, building energy saving is required by the energy crisis, environmental protection and the improvement of living standards. Building energy saving has been the common choice of world’s architectural community after thoughtful for a long time. So, what is exactly energy-saving building, what is its benefit, why does everybody concern about it so much? What measures of Architecture lighting environment design in energy conservation will be taken? This paper will give you some simple introductions about the above problems. There is a period of development in People’s understanding of the concept about energy-saving building, from the initial blindly to save energy, to focus on reducing heat loss. And now is emphasizing to improve the building energy efficiency. That is to say, energy-saving building does not mean sacrifice comfort, on the contrary, it requires that the use of reality means to achieve more convenient and higher comfortable. Generally, energy-saving building is refer to ensure the construction in use function and meet the indoor physical environment quality conditions, by improving the building palisade structure, heat insulation performance, heating air conditioning system efficiency and natural energy technology measures to reduce energy consumption to provisions of the building level; At the same time, when does not use the heating and air conditioning measures, indoor physical environment of buildings achieve to a certain standard.

Obviously, the greatest benefit of energy-saving building is to lower energy consumption, so as to reduce maintenance costs. According to the experience of northern Europe, energy-saving building in early investment is 3% higher than in the average building, but the maintenance cost can reduce 60%. This paper refers to the use of building energy consumption of building energy consumption, the energy consumption in developed countries account for the country is 30% ~ 40% in generally, China accounts for 28% of the total energy consumption. At present our country’s energy is grim, but the energy saving level of our country buildings is low. In energy efficiency, we have a greatly improved space. For example, energy consumption is about 11 w/m2 in Sweden and Denmark, however, is w/m2 in Beijing and 33.7 w/m2 in Harbin, if our country can reach the level of the advanced countries, we can save 60 to 70% of building energy consumption. Secondly, the energy conservation of the building can improve the indoor environment of the building and satisfy the people’s increasingly improving standard of living needs. In addition, can effectively reduce the heating atmospheric pollution of the building construction caused. If we use new material for the wall, it still can save the limited clay resources. Currently the focus of energy-saving building mainly lies in the indoor thermal environment, in fact in building light environment design; building energy efficiency also has bright prospects. First is the natural sunlight, we should carefully consider the area of the window and orientation, and can set reflecting sunlight board or optical tube and other import natural light equipment; Building decoration can use light color, adding secondary reflects the light and through these means to ensure that you get enough indoor light, and achieve some degree of uniformity, thus reducing the day of artificial lighting, and save lighting energy consumption, and the associated, due to the increase of the lighting equipment cooling air conditioning load. For the sun’s radiation problems, with the economic conditions, setting up reasonable shading equipment, from the most simple shade, to the intelligent control, with the actual situation of the instant adjustment facilities are used for complex success of the case, still can use hot reflex plated film materials such as glass, as far as possible in the summer to reduce the sun radiate to enter indoor, winter and to the light from the sun to enter. Doors and Windows to set and natural ventilation, take away heat. In artificial light environment design, there are also many energy saving methods, the first thing that we should do is the determination of reasonable illumination standards and energy conservation standard, our country began to implement the latest building lighting design standards (GB50034-2004) on 1st, December, 2004. The standard stipulated the illumination level of each room and each place, and also put forward the corresponding illumination lighting power density with illumination lighting value (per unit area lighting installation power, including power source, ballast or transformer), in addition to the residence, the relevant provisions of public building lighting power density of the values are mandatory provisions, it will give us the chance to control the amount of light energy consumption effectively in the designing phase; Secondly in equipment choice, should adopt high photosynthetic efficiency of power source, choose high luminous efficiency, with the lamps and lanterns of reasonable light; As for large areas office, light and air conditioning equipment will be combined, direct take out the heat producing by lighting facility, reduce air conditioning load is also effective energy saving method; Thirdly, can control the light and time, infrared monitor, automatic control means and so on. When indoor natural lighting has reached the period of time and point where the intensity of illumination of artificial lighting standard is, close some artificial lighting, avoid simple processing causing unnecessary energy waste. At present, there were many excellent examples of energy-saving building; we believe that energy-saving building will have wide development prospects because it owns outstanding advantages. However, lighting as an important part of building energy consumption, the energy saving research should be paid more attention by us.

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