原子能科学技术2016，Vol.50Issue(8)：1387-1394,8.DOI:10.7538/yzk.2016.50.08.1387
含绕丝2×2棒束内超临界水传热试验研究
Experimental Investigation on Heat Transfer of Supercritical Water in Wire-wrapped 2×2 Rod Bundle
摘要
Abstract
The experiment was performed to study the heat transfer of supercritical water in wire-wrapped 2 × 2 rod bundle under the background of supercritical water-cooled reactor fuel qualification test.The experimental parameters cover the pressure of 23 to 28 MPa,mass flux of 400 to 1 000 kg/(m2 ·s)and heat flux of 200 to 1 000 kW/m2 .The circumferential wall temperature distributions of the heated tubes were obtained.In addition,the effects of heat flux,mass flux,pressure and wire-wrapped spacer on wall temperature and heat transfer coefficient were analyzed.It is found that the wall temperatures along the circumferential direction of the heated tube are non-uniform and non-symmetric.The highest wall temperature appears either at the corner sub-channel,or at the location covered by the wrapped wire.The heat transfer coeffi-cient drops considerably with increasing heat flux or decreasing mass flux in the pseudo-critical region,but varies slightly at different pressures.Compared with the bare 2 ×2 rod bundle,the wire-wrapped spacer not only changes the circumferential wall tempera-ture profiles of the heat tube,but also promotes the average heat transfer coefficient.关键词
超临界水/2×2 棒束/周向壁温/传热Key words
supercritical water/2 × 2 rod bundle/circumferential wall temperature/heat transfer分类
能源科技引用本文复制引用
王汉,毕勤成,吕海财..含绕丝2×2棒束内超临界水传热试验研究[J].原子能科学技术,2016,50(8):1387-1394,8.基金项目
中央高校基本科研业务费专项资金资助项目(2016ZZD05) （2016ZZD05）
