The paper aims to explain the differences found in the heat release rate measurements in a large sample of standard fire tests (EN 1363‐1). A total of 379 tests of vertical assemblies was investigated, all performed in furnace SPARK of the ITB Fire Testing Laboratory, in 2015‐2018. The assemblies were subdivided into two groups—wall assemblies and fire‐rated doors. These assemblies were also compared with the results of the test of a wall built with aerated autoclaved concrete blocks that was considered as the benchmark test. It was observed that walls built with highly insulated sandwich panels require less heat to maintain standard thermal exposure conditions (20%‐30% less) than their counterparts built from gypsum plasterboard or aluminium and fire‐rated glass. In case of doors, it was observed that combustible samples required significantly less heat than the benchmark case (40%‐70% less), which indicates that the combustion of the sample inside of the furnace was an additional, significant source of heat release, that may skew the qualitative assessment of their performance in fire. A more in‐depth discussion of the results is provided, with some ideas on the direction of further developments in fire testing.

中文翻译：

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熔炉测试中的能量平衡，漏洞或功能方面的差异？

本文旨在解释在大量标准耐火测试（EN 1363-1）中放热率测量中发现的差异。2015年至2018年，共调查了379个垂直组件的测试，所有测试均在ITB火灾测试实验室的SPARK炉中进行。组合件分为两类：墙组合件和防火门。还将这些组件与用充气高压灭菌混凝土砌块建造的墙体的测试结果进行了比较，该测试被视为基准测试。可以看出，与采用石膏灰泥板或铝和耐火玻璃制成的墙相比，采用高度绝缘的夹心板建造的墙所需的热量更少，以保持标准的热暴露条件（少20％-30％）。如果是门，可以观察到，可燃样品所需的热量比基准情况要少得多（少40％-70％），这表明炉内样品的燃烧是附加的重要的热释放源，可能会使定性产生偏差评估其在火中的表现。提供了对结果的更深入讨论，并提供了有关火灾测试进一步发展方向的一些想法。