This paper presents the results of a Guarded Hot Box (GHB) experiment on a wall assembly made up of both steel stud framing and an external insulating assembly which incorporates vacuum insulation panels (VIPs) for which knowledge of the composition of the VIP barrier foil is not readily available. The purpose of the tests is to provide an experiment result for thermal resistance of a wall assembly containing several sources of thermal bridging, including those due to the barrier foil at the edge of and joint material between the VIPs and the condensation potential on the interior surface due to the steel studs. The steady-state GHB experiments were completed in accordance with ASTM C1363 for an interior air temperature of 20.9°C and an exterior air temperature of −34.9°C; this resulted in a thermal resistance for the wall assembly of 6.8 ± 0.8 m² K/W. Surface temperature measurements on a VIP in the wall assembly indicated that increased levels of heat transfer were occurring at the edges of the VIPs as compared to the center of the panel confirming thermal bridges were present at the panel edge. Measurement of the temperature on the interior surface of the sheathing board around the steel stud indicated that the external insulation effectively minimized the risk of condensation due to the steel studs. Determining the thermal resistance and condensation risk for a wall assembly which contains VIPs for which knowledge of the barrier film is not readily available demonstrates the potential for use of such a wall assembly according to energy and building code requirements. The wall assembly and test details can also be used to compare industry standard calculation methods and detailed 2D and 3D simulations to the GHB test result. The comparison can be used to inform on the validity of using calculations and simulation methods in lieu of testing for energy and building code compliance. The comparison of calculations and simulations is not the scope of the work presented in this paper and will be explored in future publications.

本文介绍了在由钢钉框架和外部绝缘组件组成的墙壁组件上进行的保温箱（GHB）实验的结果，该组件结合了真空绝缘板（VIP），对VIP阻挡箔的成分了解不容易获得。该测试的目的是为包含多个热桥源的壁组件的热阻提供实验结果，其中包括源于VIP边缘的阻隔箔和VIP之间的接合材料以及内表面的凝结电势的源。由于钢钉。根据ASTM C1363对内部空气温度20.9°C和外部空气温度-34.9°C进行稳态GHB实验；墙组件的热阻为6.8±0.8 m² K / W。在墙组件中VIP的表面温度测量结果表明，与面板的中心相比，在VIP的边缘发生的传热水平增加，从而确认面板边缘处存在热桥。在围绕钢钉的护套板的内表面上的温度的测量表明，外部绝缘有效地最小化了由于钢钉引起的凝结的风险。确定包含VIP的墙组件的热阻和冷凝风险，而VIP尚不易获得阻隔膜的知识，这表明了根据能源和建筑规范要求使用这种墙组件的潜力。墙体组装和测试详细信息还可以用于将行业标准计算方法以及详细的2D和3D模拟与GHB测试结果进行比较。该比较可用于告知使用计算和模拟方法代替测试能源和建筑规范合规性的有效性。计算和仿真的比较不在本文介绍的范围之内，将在以后的出版物中进行探讨。