Study On Appropriate Building Shading Technology In Hot Summer And Warm Winter Zone

In hot summer and warm winter Guangzhou, the window energy-saving effect in the whole construction of the retaining structure is the most obvious and effective. The window is a key component of energy conservation, especially East and West towards the windows of the air-conditioned room plays an important role on the energy saving. The indoor heat gain is mainly from the out windows through radiation. In summer, the solar heat gain is the main source of room cooling load, how to reduce this part of heat, especially reduce the heat gain through the windows, is the important and difficult point of the building energy efficiency work .Building shading technology is an integral part of the Building Heat Insulation, it plays an important role in defending environment overheating, controlling envelope structure's temperature accordingly reduce the air condition energy consumption and enrich facade artistic effect. Shading technology is a passive energy-saving technology, it no exist in using energy, so it's considered a sustainable development technology.This paper mainly takes Guangzhou for example, the following as the main content of the works:1. By looking up documents and field investigations, analyzes the situation of building shading in that zone. Summarizes the experiences of building shading technology, focus on the traditional dwellings and modern building, which it's practice to prevented solar radiation in traditional dwellings, the kinds of sunshade, the structure and so on will be sum up; and then use the shadow, the sun permeance coefficient to analyses the effect. Finally it analyzes and summarizes the appropriate technology.2. By analyzing the modern architecture sunshade, posing a new shade structure practices, what is the window films, take a certain lab, through experiments testing methods what add films in original windows, and then set a series of temperature sensors to collect the indoor temperature movement, lastly contrast to which no add films in windows, we research when change physics parameter of glass, how many degrees the temperature drop, thereby save the energy consumption of air conditioning system in the room.