在我国严寒地区，由于砖混结构住宅和公用建筑物的外墙采用490mm厚的红砖墙，为了增加室内空间，一般都将采暖系统的散热器安装在壁龛内。由于外墙设置壁龛后，墙体厚度由490mm变为370mm，这样会使采暖耗热量增加6％。为了建筑节能，改善壁龛的建筑热工条件是十分必要的。通过对某公用建筑物标准层典型房间的热工测试和理论计算，在壁龛的内表面镶贴保温层可大大改善壁龛的建筑热工条件，从而达到节能的目的。 In the cold regions of China, 490mm thick red brick walls are used for the exterior walls of brick-concrete structures and public buildings. In order to increase indoor space, radiators of heating systems are generally installed in the niches. Since the thickness of the wall is changed from 490mm to 370mm due to the setting of the niche on the outer wall, this will increase the heating energy consumption by 6%. For building energy conservation, it is necessary to improve the building thermal conditions of niches. Through the thermal testing and theoretical calculation of a typical room in a standard building of a public building, the inlaying and heat-insulating layer on the inner surface of the niche can greatly improve the building thermal conditions of the niche, thereby achieving the purpose of energy saving.