CAJ | 학술논문

在核反应堆发生冷却剂丧失事故（LOCA ）时，大量质能释放到安全壳内，通过喷淋能有效降低安全壳内的温度及压力。考虑喷淋液滴下落过程中体积、质量、温度及阻力系数的变化，应用对流传热及传质关联式，计算得到液滴与周围介质的传热、传质特性。计算结果与 TOSQAN试验对比符合较好。对不同液滴尺寸、不同环境压力及蒸汽未达到饱和的情况进行了计算，分析了喷淋的影响，结果可为喷淋系统的设计与应用提供一定的理论依据。
재핵반응퇴발생냉각제상실사고（LOCA ）시，대량질능석방도안전각내，통과분림능유효강저안전각내적온도급압력。고필분림액적하락과정중체적、질량、온도급조력계수적변화，응용대류전열급전질관련식，계산득도액적여주위개질적전열、전질특성。계산결과여 TOSQAN시험대비부합교호。대불동액적척촌、불동배경압력급증기미체도포화적정황진행료계산，분석료분림적영향，결과가위분림계통적설계여응용제공일정적이론의거。
When loss-of-coolant accident (LOCA ) occurs in the nuclear power plant ,a lot of mass and energy are released into the containment .The temperature and pressure in the containment can be lowered down effectively by initiating the spray system .Con-sidering the changes of the volume ,mass ,temperature and drag coefficient ,the charac-teristics of heat and mass transfer of the spray droplet to the surroundings were obtained by calculation using the convective heat and mass transfer correlations .T he comparison between the calculation results and the TOSQAN experimental data shows good agree-ment .The cases with different droplet diameters ,different environmental pressures and the case with the steam not reaching saturation state were calculated .By analyzing the effect of the spray ,the results can offer theoretical basis for the spray system design and application .