As for the thermal radiation of the sun ,according to the economic conditions, a set of sun shading devices can be set reasonably, from the simplest sun visor, to intelligent control, there are successful used cases for the complex facilities with immediate adjustment to the actual situation, we can also adopt heat-reflective coated glass and other materials ,and so as to reduce unwanted solar heat into the room in summer as much as possible ,and also contribute to the entry of sunlight in winter. Door and window setting should be conducive to natural ventilation and take heat away.
In the aspect of artificial light environment design, there are also many energy-saving means, the first is to determine the appropriate lighting standards and energy saving standards, China began to implement the latest “architectural lighting design standards “(GB50034-2004) on December 1, 2004. The standard not only regulates the lighting level for the various rooms and places, but also proposes lighting power density values corresponding to the illumination value(Lighting installation power on each unit area, including illuminants ,ballasts or transformers).In addition to residential, the relevant regulations for lighting power density value of public buildings are mandatory, this will enable us at the design stage to control the amount of lighting energy consumption; Secondly, we should adopt high luminous efficiency illuminant and choose those lamps with high luminous efficiency ,and reasonable light distribution; For large- area office, we should combine the lighting with air conditioning equipment, and then the heat generated by the lighting will be taken away directly, reducing air conditioning load is also an effective way for energy-saving; we can adopt the automatic control means again, such as light control, time control, infrared monitoring and so on. In the places and periods where Indoor natural lighting has met the illumination standards of artificial lighting, part of the artificial lighting should be shut down so as to avoid the unnecessary waste of energy caused by simple processing .At present, there are many excellent examples of energy-saving buildings at home and abroad. We believe that, energy efficient buildings, due to their outstanding advantages, are bound to have broad prospects for development. Lighting is an important part of the building energy consumption; the energy-saving research should attract more of our attention and research inputs.