门窗缝隙是寒冷地区房屋冬季冷风渗透的通道,目前有些窗户质量较差,开启部份缝隙宽度多在2毫米上下,特别是近来大量推广的简易钢窗,缝隙往往更大,散热更多。门窗缝隙散热一般占房屋冬季散热总量的20％以上,造成能源的巨大浪费。而且夏秋蚊虫钻入,春季风沙侵袭,全年都受噪声干扰,对居住条件的影响很大。 The gap between windows and doors is the channel for cold wind penetration in winter in some cold areas. At present, some windows are of poor quality, and the width of the opening gap is usually about 2 mm. In particular, simple steel windows that have been widely promoted recently have larger gaps and more heat dissipation. The gap heat dissipation of doors and windows generally accounts for more than 20% of the total heat dissipation of houses in winter, resulting in a huge waste of energy. In addition, mosquitoes entered the summer and autumn, and wind and sand invaded in the spring. They were disturbed by noise throughout the year, which greatly affected living conditions.