From the actual conditions of the cold regions , it is discussed the requirement of house windows from building energy efficiency standard . from the two aspects of heat gain and heat loss in buildings , the energy efficiency principles of windows are analyzed and the development trend of the technology of energy efficiency windows is also given 从寒冷地区的实际情况出发,介绍了我国现行建筑节能标准对建筑外窗的要求;从建筑得热与失热两方面对窗户的节能原理进行了技术分析,并展望了我国节能窗技术的发展趋势。
We calculate composite block masonry ' s heat transfer coefficients under different conditions , then we discuss these data according to the energy efficiency criterion in wuhan city and come up with the key factors which influence the thermal performance of composite block masonry , . at the end of this paper we summarize and look forward to the future of composite blocks in engineering practice in mechanics and thermal sides 在热工性能方面，对复合砌块砌体的保温、隔热性能进行了分析与推导，定量推导了多种情况下复合砌块砌体的传热系数，并结合武汉市的地方节能标准进行了论证，提出了影响复合砌块砌体热工性能的关键因素。
