Abstract The contribution is focused on investigating the heat transfer via natural convection which originated as an effect of changed air density by heating the horizontal sample in the area given. For this research we used samples of a new material made in the Russian Federation – the foam concrete which was reinforced by PET fibres. The samples were heated by an electric heating device from the bottom. The temperature fields originating above the horizontal sample surface were visualised by means of the holographic interferometric contactless method in real time. The holographic interferograms of the temperature field were analysed, and then the local heat transfer parameters were calculated: the heat transfer coefficient α, and the heat conductivity coefficient λ.

中文翻译：

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新一代泡沫混凝土上方传热的干涉测量

摘要 贡献的重点是研究通过自然对流进行的传热，这种传热起源于通过加热给定区域中的水平样品而改变空气密度的影响。在这项研究中，我们使用了俄罗斯联邦制造的一种新材料样品——由 PET 纤维增强的泡沫混凝土。样品由底部的电加热装置加热。源自水平样品表面上方的温度场通过全息干涉非接触式方法实时可视化。分析温度场的全息干涉图，计算局部传热参数：传热系数α和导热系数λ。