矩形窄腔内截面含汽率研究

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基金项目:

国家自然科学基金(10375046)；国家自然科学专项基金(No.50323001)

Study on Void Fraction in Rectangle Narrow Chamber

State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, 710049, China

摘要: 以氟利昂113为工质,对矩形窄腔内的截面含汽率进行了研究,得出了不同压力、加热功率情况下的截面含汽率变化规律以及含汽率沿高度方向的计算式。结果表明,当容积产气量一定时,整个空间内的平均截面含汽率随压力增大而升高,而当加热功率一定时,截面含汽率随压力增大而降低。因此当热负荷不变时适当升高工作压力,可以降低截面含汽率。
- 窄腔 /
- 沸腾 /
- 含汽率
Abstract: An experimental study on the void fraction in the rectangle narrow chamber is conducted and Freon-113 is used as the work fluid. The variety rule and computation method of void fraction along the height under different pressures and heating powers have been obtained. The results show that when the volume evaporation quantity is constant, the average void fraction increases with the increasing of pressure, an when the heating power is constant, it will decrease with the increasing of pressure. So at the same thermal load, the average void fraction can be reduced by increasing the working pressure properly.
- Narrow chamber /
- Boiling /
- Void fraction