安装在建筑物墙壁、地板、天花板和屋顶的狭小空间内的反光隔热产品。它不包括辐射屏障，辐射屏障通常安装在非限定的阁楼空间中，阁楼通风方案可能会产生外部对流。这项详尽的文献调查可以追溯到近100年前，详细研究了从20世纪20年代到现在的反射式绝缘系统文献。综述中包括与受限空间内自由运动相关的文献，以及老化（灰尘收集、水分、冷凝和腐蚀）对反射隔热产品热性能的影响。文献综述表明，预测热性能的重要参数是平均温度、温差、长宽比（高宽比）、几何形状和方向以及空域的表面发射率。 论文最后对需要研究和产品开发的领域提出了建议。引用:研讨会，ASHRAE Trans。，第95卷，第。2.

reflective insulation products that are installed in con, fined airspaces of building wails, floors, ceilings, and roofs. It excludes radiant barriers, which are normally instaffed in nonconfined attic airspaces, where there may also be external convective flows created by attic ventilation schemes. The exhaustive ffterature survey goes back almost 100 years and looks in detail into reflective insula, tion system literature from the 1920s to the present. Included in the review is the ffterature pertinent to free canvection in confined airspaces and the effects of aging (dust collection, moisture, condensation, and corrosion) on the thermal performance of reflective insulation products.The literature review shows that the important parameters for predicting the thermal performance are the mean temperature, temperature difference, aspect ratio (height to width ratio), geometry and orientations, and surface emissivities of the airspace(s). The paper concludes with recommendations on areas ofneeded research and product development.