Analysis And Application Of Wall Thermal Insulation In Jiujiang

As a key industry in the energy consumption, building energy conservation is very important. Especially in hot summer and cold winter areas, needs heating in winter, summer need cooling, energy consumption is more serious. Jiujiang is located in the south of the Yangtze river basin, is the north gate of jiangxi province, is a typical hot summer and cold winter area. Throughout the building’s heat loss, palisade structure heat transfer heat loss of70%～80%. Among them, the external wall accounted for the largest share, therefore, the emphasis should be of building energy efficiency is to strengthen the building outer wall heat preservation and heat insulation performance. Building exterior wall thermal insulation materials mainly used in China for polystyrene foam board, the organic materials such as polyurethane foam board, composite slurry and silicate, rock wool, mineral cotton, glass cotton, foam glass and other inorganic materials. The main wall thermal insulation technology and methods are:within the external wall thermal insulation, thermal insulation, sandwich insulation, internal and external mixing heat preservation, thermal insulation and other measures. Jiujiang is located in east longitude113°57’～116°53’, north latitude28°～30°47’06’, located in the south of the Yangtze river basin, the north gate of jiangxi province, is11.3%of the total area of jiangxi province. Jiujiang is located in the subtropical north subtropical transition zone, annual average temperature16-17℃, more than40%in the second quarter, is a typical hot summer and cold winter region. Jiujiang city a total population of729000by the end of2010, is expected to be reached more than950000in2015. By the end of2010, jiujiang town civil construction total is about070million square meters. It is predicted that by2015jiujiang town civil construction volume will reach090million square meters. At present, in jiujiang city building power consumption is about1.5billion kWh (BiaoMei when quantity is about185000tons). By2015it expects to jiujiang city civil building power consumption up to1.9billion kWh (BiaoMei when quantity is about230000tons). The data analysis, sampling the jiujiang16residential district, a total of42building wall insulation energy-saving application. Jiujiang region of exterior wall thermal insulation material mainly vitrified microsphere insulation mortar, powder polystyrene particles insulation pulp, kingbox inorganic non-combustible insulation mortar, semi-rigid high-quality thermal insulation material, such as ore-bearing rock wool board used fewer defects more EPS, XPS board. External wall insulation technology is mainly used in external thermal insulation, sandwich insulation and Inside and outside the insulation hybrid form almost no application. In the future, we can improve, use a variety of insulation way mixing method, hybrid heat preservation, such as inside and outside the wall since the forms such as heat preservation; Using new composite thermal insulation material to replace the single varieties of thermal insulation material. At present, the heat preservation technologies used in jiujiang mainly refer to reference other provinces and cities of the existing research technique, not on its own research technology, thermal insulation materials are mostly imported from other provinces and cities to buy. As one of the important cities of jiangxi province, energy-saving renovation of buildings in jiujiang administrative region is wall not only for themselves, and even the development of building energy efficiency in the whole area of jiangxi province has a significant impact and significance.