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首页> 外文期刊>Journal of Thermophysics and Heat Transfer >Analytical Model for Thermal Performance Analysis of Enclosure Heated by Aligned Thermosyphons
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Analytical Model for Thermal Performance Analysis of Enclosure Heated by Aligned Thermosyphons

机译：对准热虹吸管加热外壳的热性能分析的解析模型

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摘要

An analytical model is developed to analyze the thermal performance of a rectangular enclosure heated by two-phase thermosyphons. The model is used to predict temperatures and thermal resistances between the elements of the enclosure based on experimental data obtained from an actual enclosure heated with a total heat input of 1280 W from room temperature and up to a maximum temperature of 330℃. The rms differences between the model and the experimental data vary between 3.4 and 7.6℃. Thermal joint resistances that are difficult to predict are evaluated indirectly by means of the proposed model. The model is also used to estimate the relative importance of the three heat-transfer modes inside the enclosure. The results show that, given the very isothermal characteristic of the air inside the enclosure, which does not lead to effective natural convection heat transfer, most of the heat inside the enclosure is transported by radiation and by conduction. Also, the usual approach of riveted joints employed in domestic ovens is shown to be thermally inefficient.
机译：建立了一个分析模型来分析由两相热虹吸管加热的矩形外壳的热性能。该模型用于基于从实际外壳中获得的实验数据来预测外壳各元件之间的温度和热阻，该实际外壳从室温到最高温度为330℃的总热量输入为1280W。模型和实验数据之间的均方根差在3.4至7.6℃之间变化。难以预测的热连接电阻通过所提出的模型间接评估。该模型还用于估算机柜内部三种传热模式的相对重要性。结果表明，考虑到外壳内部空气的等温特性，这不会导致有效的自然对流传热，外壳内部的大部分热量都是通过辐射和传导来传递的。而且，家用烤箱中使用的铆接接头的常规方法显示出热效率低下。

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