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我国北方,冬季严寒,特别是在高寒地区,如黑龙江省,漫漫冬季达五个月之久,工业与民用建筑在寒冷的冬季里,需消耗大量的能源用于取暖。统计数据表明,在建筑的总热耗中,外门窗的热耗约占总量的40％左右。 为了节约能源保护环境,国内外建筑界都在力求降低建筑物的使用能耗,许多建筑用节能产品被研制、开发、推广应用。如西北欧地区,发达国家在建筑中推广使用塑料门窗已有半个世纪,并取得了良好的经济与社会效益。我国近几年在塑料门窗的推广使用上,也有了一个良好的开端。中空节能塑料门窗,是把玻璃以双层中空方式镶嵌在塑料框上,从而使其具有良好的隔热、隔音效果。
In northern China, the winter is very cold, especially in the high-cold regions such as Heilongjiang Province, where the long winter lasts for five months. Industrial and civil buildings consume large amounts of energy for heating during the cold winter months. Statistics show that the heat loss of external doors and windows accounts for about 40% of the total heat loss in the building. In order to save energy and protect the environment, the construction community at home and abroad are striving to reduce the energy consumption of the buildings. Many energy-saving products for construction are being developed, developed and applied. For example, in the Northwest Europe region, developed countries have used plastic doors and windows in buildings for half a century and have achieved good economic and social benefits. China has also made a good start in the promotion and application of plastic doors and windows in recent years. The hollow energy-saving plastic doors and windows are made by inserting the glass in a double hollow manner on the plastic frame so that it has good heat insulation and sound insulation effects.