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对稀相含尘气流横向冲刷圆管的对流换热进行了研究，并在理论分析的基础上，在热态循环流化床实验台的上部稀相区进行了实验。采用粒径分别为１３７μｍ，１４６μｍ和３２６μｍ的石英砂为床料。实验结果表明，稀相含尘气流与纯空气横掠圆管时的对流换热系数之比ｈｄ／ｈｇ主要受稀相含尘气流密度和颗粒粒径的影响，通过理论分析和实验数据的拟合，得到稀相含尘气流横掠圆管的准则方程。研究基于热态实验，结果更接近于实际工况，可为循环流化床的设计提供理论依据。图５参６
The convection heat transfer of the horizontal scouring circular pipe with dilute phase dust flow was studied. Based on the theoretical analysis, the experiment was carried out in the upper dilute phase zone of the hot circulating fluidized bed experimental bench. Quartz sand with particle sizes of 137μm, 146μm and 326μm were used as bed material. The experimental results show that the ratio of hd / hg to the convective heat transfer coefficient of lean-phase dust-laden gas flow and pure-air cross-sectional circular tube is mainly affected by the density and particle size of lean-phase dust-containing dust. Through theoretical analysis and experimental data Together, get dilute phase dust flow traversing pipe guidelines equation. Based on the thermal experiments, the results are closer to the actual conditions and provide a theoretical basis for the design of CFB. Figure 5 reference 6