本文讨论了建筑墙体细部对墙体整体热工性能的影响。对六个轻钢框架墙体系统（部分为木质构件）的整体墙体热性能进行了分析。对于每个墙体系统，所有墙体细节均采用校准的三维有限差分计算机建模进行模拟。六个钢框架墙系统的热性能包括各种系统细节和典型单层牧场房屋的整个墙系统热性能。目前，通过建筑墙体的预计热损失通常基于使用ASTM C 236等试验方法测量墙体系统的净墙面积，或者根据ASHRAE手册中推荐的程序之一进行计算- 基本原理，通常只针对净墙区域进行。在本文中，“净墙面积”被定义为墙体系统中不存在因建筑围护结构细节引起的热异常，或不受与建筑围护结构其他表面相交的热影响的部分。透明墙实验或计算通常不包括建筑围护结构细节的影响，例如角落、门窗洞口，以及与屋顶、楼板、天花板和其他墙的结构交点。在钢框架墙系统中，这些细节通常由比清水墙更多的结构构件组成。在这种情况下，为净墙面积测量或计算的热性能不能充分代表整个墙系统的热性能。 影响当今标准实践准确预测总墙系统热性能能力的因素包括计算方法的准确性、总墙的净墙面积，以及各种墙系统细节的数量和热性能。本文中使用的全壁热分析方法是作为全壁评级程序的一部分开发的。对于几种墙体技术，所有墙体界面细节的局部R值和整个墙体R值，以及墙体界面细节的三维CAD渲染图像，显示在以下互联网地址下:http://www.ornl.gov/roofs+墙。本文的主要目的是找出钢的结构和材料配置之间的关系- 框架墙细节和整个墙的热工性能。研究发现，即使是透明墙或墙细节结构的微小变化也能显著改善整个墙的热性能。此外，这项研究证实，使用钢框架的墙体系统（包含木质构件）比传统的钢框架墙体系统具有更高的热效率。单位:双引证:研讨会，ASHRAE交易，1998年，第104卷，第2部分，多伦多

This paper discusses the influence of architectural wall details on whole wall thermal performance. Analysis of whole wall thermal performance was done for six light gauge steel-framed wall systems (some with wood components). For each wall system, all wall details were simulated using calibrated three-dimensional finite difference computer modeling. The thermal performance of the six steel-framed wall systems included various system details and the whole wall system thermal performance for a typical single-story ranch house.Currently, predicted heat losses through building walls are typically based on measurements of the clear wall area of the wall system using test methods such as ASTM C 236, or they are calculated by one of the procedures recommended in the ASHRAE Handbook-Fundamentals, which often is carried out for the clear wall area exclusively. In this paper, "clear wall area" is defined as the part of the wall system that is free of thermal anomalies due to building envelope details or is thermally unaffected by intersections with other surfaces of the building envelope. Clear wall experiments or calculations normally do not include the effects of building envelope details such as corners, window and door openings, and structural intersections with roofs, floors, ceilings, and other walls. In steel-framed wall systems, these details typically consist of many more structural components than the clear wall. For this situation, the thermal properties measured or calculated for the clear wall area do not adequately represent the thermal performance of the total wall system. Factors that would impact the ability of today's standard practice to accurately predict the thermal performance of the total wall system are the accuracy of the calculation methods, the area of the total wall that is clear wall, and the quantity and thermal performance of the various wall system details. The whole wall thermal analysis method used in this paper was developed as a part of a whole wall rating procedure. For several wall technologies, local R-values for all wall interface details and the whole wall R-value, together with three-dimensional CAD-rendered images for wall interface details, are presented under the following Internet address:http://www.ornl.gov/roofs+walls.The main objective of this paper was to find a relationship between structural and material configurations of the steel-framed wall details and the whole wall thermal performance. It was found that even small changes in clear wall or wall detail configuration can bring significant improvements in whole wall thermal performance. Also, this research confirmed that wall systems using steel framing that incorporate wood components are much more thermally effective than conventional steel-framed wall systems.Units: Dual