CAJ | 학술논문

对环形通道内金属钠起始沸腾壁面过热度进行实验研究。实验段长800 mm ，环形通道外径10 mm ，内径6 mm。电加热元件最高热流密度为846 kW/m2，进口过冷度为63.1～287.8℃，质量流量为7.2～122.0 kg/h ，系统压力为0.85～28.79 kPa。实验结果表明，起始沸腾壁面过热度随热流密度和进口过冷度的增加而升高，随质量流量和系统压力的增加而降低。拟合得到了关于起始沸腾壁面过热度的半经验关系式，关系式计算结果与实验数据符合良好。
대배형통도내금속납기시비등벽면과열도진행실험연구。실험단장800 mm ，배형통도외경10 mm ，내경6 mm。전가열원건최고열류밀도위846 kW/m2，진구과랭도위63.1～287.8℃，질량류량위7.2～122.0 kg/h ，계통압력위0.85～28.79 kPa。실험결과표명，기시비등벽면과열도수열류밀도화진구과랭도적증가이승고，수질량류량화계통압력적증가이강저。의합득도료관우기시비등벽면과열도적반경험관계식，관계식계산결과여실험수거부합량호。
The incipient boiling wall superheat of sodium flowing in annulus was experi-mentally investigated .The annulus is the length of 800 mm ,the inside diameter of 6 mm and the outside diameter of 10 mm .Experimental conditions are that the heat flux is 128-846 kW/m2 ,the inlet subcooling is 63.1-287.8 ℃ ,the mass flow rate is 7.2-122.0 kg/h and the system pressure is 0.85-28.79 kPa . The experimental results indicate that the incipient boiling wall superheat increases with the heat flux and the inlet subcooling ,and reduces with the increase of the mass flow rate and the system pressure . A semi-empirical correlation was gained from experimental results . The predicting results agree well with experimental data .