既有建筑门窗节能改造简便易行

我国既有建筑节能改造与新建建筑相比量大、潜力更大。而门窗是建筑耗能的薄弱环节，更容易进行改造.文章从建筑门窗入手，介绍节能改造的途径和具体方法，分析门窗改造的节能效果，提出政府应对门窗改造这种成本低廉、施工简便易行的方法予以政策扶持。

Simple and Applicable Rebuilding of Energy-saving Function for Existing Architectural Door and Window

Compared with new buildings, the energy-saving reconstruction work for existing building in the country is much larger and has more potential. Door and window are the weak link of architectural energy consumption and are much easier in reconstruction. This article, based on architectural door and window, introduces the manners and specific methods for energy-saving reconstruction, analyzes the energy-saving effect after reconstruction, and presents that the government shall support such low-cost and easy- construction method.