Study of free convection frost formation on a vertical plate
Study of free convection frost formation on a vertical plate
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DOI：
10.1016/s0894-1777(02)00173-5
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发表时间：
2002-08
影响因子：
3.2
通讯作者：
M. Fossa;G. Tanda
中科院分区：
文献类型：
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作者：
M. Fossa;G. Tanda
涉及从湿空气流到垂直板的热传递的过程，同时伴有霜的沉积，在各种制冷设备中非常重要。本文对自然对流条件下垂直平板上的霜层生长进行了实验研究。通过乙二醇内部循环冷却的板被放置在顶部和底部敞开的垂直通道中，以允许环境空气的自然循环。冷板温度在−13至−4 °C范围内变化，而环境空气的相对湿度和温度分别在31-58%和26-28 °C范围内。测量的数量（霜厚度，霜表面温度，霜的沉积质量，在板/霜界面的热通量）进行了比较，由一个简单的模型的基础上，在文献中报道的标准关系（传热和传质系数，霜密度和导热系数）的结果。
Processes involving heat transfer from a humid air stream to a vertical plate, with simultaneous deposition of frost, are of great importance in a variety of refrigeration equipment. In this work, frost growth on a vertical plate in free convection has been experimentally investigated. The plate, cooled by the internal circulation of glycol, was placed in a vertical channel open at the top and bottom in order to permit the natural circulation of ambient air. The cold plate temperatures were varied in the −13 to −4 °C range, while the relative humidity and temperature of the ambient air were taken in the 31–58% and 26–28 °C ranges, respectively. Measured quantities (frost thickness, frost surface temperature, deposited mass of frost, heat flux at the plate/frost interface) were compared with results given by a simple model based on standard relationships (for heat and mass transfer coefficients, frost density and thermal conductivity) reported in the literature.