Experimental Investigation on Heat Transfer Characteristic of Saturated Boiling in Round Tube
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摘要: 采用圆形通道实验本体对饱和沸腾传热特性进行实验研究。实验本体加热长度1000 mm,通道尺寸为φ9.5 mm×1 mm。采用全液相雷诺数(Relo)和沸腾数(Bo)作为描述圆形通道内饱和沸腾传热特性的无量纲参数,在实验数据的基础上,拟合获得了圆形通道内饱和沸腾传热系数经验关系式,关系式对94.5%实验数据预测偏差在±20%以内。Abstract: An experiment on saturated heat transfer characteristic in round channel was carried on using water. The dimension of round tube isφ9.5 mm×1 mm with a 1000 mm heating length. The dimensionless Relo number and Bo number were used as important parameters to predict heat transfer coefficient in round channel. Based on the two dimensionless numbers, the data were used to develop a new correlation. The correlation was then tested against the experimental data, the error was about ±20%.
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Key words:
- Round channel /
- Heat transfer /
- Correlation
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