Traditionally, the energy efficiency properties of building envelope components are prescribed world-wide using the steady-state “U-value” where the insulation capabilities rely on the thermal conductivity of construction materials only. However, the heat flow through the building envelope is also restricted by the effect of other material properties combined in the form of the thermal inertia, a widely used parameter that can be controlled in the building environment through transient-state parameters such as the cyclic transmittance “u-value”. By controlling the thermal inertia of the building envelope components key aspects of the building performance such as the building thermal, energy efficiency and fire performance can be evaluated in a holistic manner so that balanced design solutions are obtained without detriment affecting each other. Herein, it is proposed a holistic assessment method that uses a numerical model to obtain the thermal inertia of building components from their thermal insulating parameters to ultimately predict reaction-to-fire performance. The method includes a complementary thermal test to achieve reliable and realistic assessments that enable the analysis of aspects like the effect of construction imperfections. Two wall assemblies were built first to illustrate the method including the thermal test and finally to verify the method by conducting reaction-to-fire tests.

传统上，建筑围护结构组件的能效特性在全球范围内使用稳态“ U值”规定，其中隔热能力仅取决于建筑材料的导热率。但是，通过建筑围护结构的热流也受到以热惯性形式组合的其他材料属性的影响，热惯性是一种广泛使用的参数，可以通过瞬态参数（例如循环透射率）在建筑环境中进行控制“ u值”。通过控制建筑围护结构组件的热惯性，可以以整体方式评估建筑性能的关键方面，例如建筑热，能效和防火性能，从而获得平衡的设计解决方案，而不会互相影响。这里，提出了一种整体评估方法，其使用数值模型从建筑构件的隔热参数获得建筑构件的热惯性，以最终预测对火的反应性能。该方法包括一个补充的热测试，以实现可靠而现实的评估，从而能够对诸如施工缺陷的影响等方面进行分析。首先建造了两个墙组件，以说明包括热测试在内的方法，最后通过进行火反应测试来验证该方法。该方法包括一个补充的热测试，以实现可靠而现实的评估，从而能够对诸如施工缺陷的影响等方面进行分析。首先建造了两个墙组件，以说明包括热测试在内的方法，最后通过进行火反应测试来验证该方法。该方法包括一个补充的热测试，以实现可靠而现实的评估，从而能够对诸如施工缺陷的影响等方面进行分析。首先建造了两个墙组件，以说明包括热测试在内的方法，最后通过进行火反应测试来验证该方法。