目前，许多国家正在使用能源评级来帮助根据能源性能选择门窗。这些评级数字是为了简单的比较目的而制定的，不考虑窗户可拆卸附件，例如广泛使用的防虫网。进行了研究，以评估昆虫屏障对窗户热量增益和损失的影响。本文研究了一种屏风类型对双层玻璃窗性能的影响。利用室内太阳模拟器设备，测量了不同屏幕连接配置和气候条件下的窗户太阳热增益系数（SHGC）和U值。 测试样品窗的结果表明，放置在室外侧的昆虫纱窗可以减少其SHGC 46%，其U值仅减少7%（0.19 W/m2·°C），而放置在室内侧的昆虫纱窗可以减少其SHGC 15%，同时减少其U值14%（0.38 W/m2·°C）。单位:SICitation:研讨会，ASHRAE交易，第105卷，第页。1999年2月2日，西雅图

Energy ratings are currently being used in a number of countries to assist in the selection of windows and doors based on energy performance. Developed for simple comparison purposes, these rating numbers do not take into account window removable attachments such as insect screens that are, nevertheless, widely used. Research was carried out to assess the effect of insect screens on the heat gains and losses of windows. The work reported in this paper deals with the effect of one screen type on the performance of a base-case, double-glazed window. Using an indoor solar simulator facility, measurements of the window solar heat gain coefficient (SHGC) and U value were made for different screen attachment configurations and climatic conditions. Results with the sample window tested indicate that insect screens placed on the outdoor side can reduce its SHGC by 46% with only a 7% reduction in its U value (0.19 W/m2· °C), and that insect screens placed on the indoor side can reduce its SHGC by 15% while reducing its U value by 14% (0.38 W/m2· °C).Units: SI