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提供了用组装式长棒束取得的95个临界热流密度实验数据,介绍了实验本体的结构特点及适应长棒束临界热流密度研究的实验方法和数据处理结果。实验是在高压热工回路上完成的。棒束为3×3正方形排列,水由下而上垂直流过棒束。组装成棒束的电加热实验元件的直径为9.5mm,棒中心距为12.6mm,轴向热流密度均匀分布,有效加热长度2200mm。实验参数范围是:压力p=14.4～15.7MPa,质量流速W_g=1204～3545kg/(m~2.s),临界点含汽量X_c=(-17.3～15.7)％。全部实验数据按截面平均法在VAX机上进行了综合处理,得到了适用于上述参数范围的临界热流密度经验关系式。公式计算值与实验数据比较的标准偏差为6.5％。
The experimental data of 95 critical heat flux density obtained with assembled long rod bundles are provided. The structural characteristics of the experimental bulk and the experimental methods and data processing results for the study of critical heat flux density of long rod bundles are introduced. The experiment is done on a high pressure thermal circuit. The bundles are arranged in a 3 × 3 square and the water flows perpendicularly through the bundles from the bottom up. The diameter of the electric heating test element assembled into a bundle is 9.5 mm, the center distance of the rod is 12.6 mm, the axial heat flux density is evenly distributed, and the effective heating length is 2200 mm. The experimental parameters range is: pressure p = 14.4 ~ 15.7MPa, mass flow rate W_g = 1204 ~ 3545kg / (m ~ 2.s), critical point vapor content X_c = (-17.3 ~ 15.7)%. All the experimental data were comprehensively processed on the VAX machine according to the cross-sectional average method, and the empirical relationship of the critical heat flux density suitable for the above parameter range was obtained. The calculated standard deviation from the experimental data is 6.5%.