This study proposes a new reduced-size plate thermometer with a modified shape and improved insulation performance in order to resolve problems commonly found when using conventional plate thermometers to measure incident heat flux in fire environments, for example, a low spatial resolution caused by the large plate area and a non-uniform temperature distribution on the plate. The main results of this study showed that the new plate thermometer exhibits high spatial temperature uniformity, and that the plate thermometer can be reduced in size to 30 mm. Moreover, it was found that the relative error of the incident heat flux of the plate thermometer was substantially reduced compared to that of a heat flux meter using a conduction correction factor expressed as a third-order polynomial function of heat flux, rather than using an average empirical constant calculated from measurement over a wide range of heat fluxes. Finally, it was confirmed that the incident heat flux measured by the new reduced-size plate thermometer in a heptane pool fire was in good agreement with the heat flux meter measurements during the rapid-fire growth, fully developed and decay phases of a fire.

中文翻译：

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测量入射热通量的小型板式温度计的研制与校准

本研究提出了一种新的尺寸减小的板式温度计，它具有改进的形状和改进的绝缘性能，以解决使用传统板式温度计测量火灾环境中的入射热通量时常见的问题，例如，由于大的空间分辨率导致空间分辨率低板面积和板上温度分布不均匀。本研究的主要结果表明，新型板式温度计具有较高的空间温度均匀性，并且板式温度计的尺寸可以减小到 30 mm。此外，发现与使用热通量的三阶多项式函数表示的传导校正因子的热通量计相比，板式温度计的入射热通量的相对误差显着降低，而不是使用通过在很宽的热通量范围内进行测量计算得出的平均经验常数。最后，证实了在庚烷池火灾中由新型减小尺寸的板式温度计测量的入射热通量与火灾快速增长、完全发展和衰减阶段的热通量计测量结果非常吻合。