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中文摘要：
引言 石蜡具有合适的相变温度和较大的相变焓，在太阳能储存、余热利用和建筑节能等领域具有较好的应用前景。在石蜡中进行热能的储存和释放大多采用传热流体作为传热介质，通过传热流体使热量在石蜡与热源或热用户间进行传递。
英文摘要：
The influence of inlet temperature of cooling water on the solidification of paraffin outside the coil tube was investigated.Numerical equations were set up to calculate the heat transfer inside the heat exchanger.The calculation of temperature fields of water and paraffin agreed well with experimental results.The temperature fields of paraffin near to the tube were different with different inlet temperatures of water,while the temperature fields far away from the tube were almost the same.The distribution of dimensionless temperature fields of paraffin was similar at different inlet temperatures of water,except for the region near to the phase interface.The interface moved faster at a lower inlet temperature of water.The moving rate of the interface slowed down at first,and became faster again when the interface was discontinuous.The results can provide the guidance for choosing the right inlet temperature of water for an appropriate solidification rate of paraffin.
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