本文报告了使用R-12作工质进行的自然循环过冷沸腾起始点和净蒸汽产生点的实验结果。实验过程中使用可视化方法观察确定过冷沸腾起始点和净蒸汽产生点. 在相当宽广的工质压力、入口过冷度及加热功率范围内研究了上述参数对过冷沸腾起始点和净蒸汽产生点的影响, 在此基础上提出了计算自然循环过冷沸腾起始点和净蒸汽产生点的计算方法。
This paper reports the experimental study of onset of subcooled boiling and point of net vapor generation in a natural circulation system with subcooled boiling. Freon-12 was used as the working medium. In the experiments the onset of subcooled boiling and the point of net vapor generation were determined byvisual observation. The influence of the system pressure, inlet subcooling of the working medium and the input power to the heated section on the onset of subcooled boiling and the point of net vapor generation were investigated in the experiments. Based on the data reduction, the calculation methods of the onset of subcooled boiling and the net vapor generation in the natural circulation system have been presented respectively.
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