Research on heat transfer coefficient of supercritical water based on factorial and correspondence analysis

• Published in: Nuclear engineering and technology 2020, 52(7), , pp.1409-1416
• Main Authors: Xiang, Feng, Tao, Zhou, Jialei, Zhang, Boya, Zhang, Dongliang, Ma
• Format: Article
• Language: English
• Subjects: Correspondence analysis; Factor analysis; Heat transfer coefficient; Natural circulation; Supercritical water; 원자력공학
• ISSN: 1738-5733; 2234-358X
• DOI: 10.1016/j.net.2019.12.017

The study of heat transfer coefficient of supercritical water plays an important role in improving the heat transfer efficiency of the reactor. Taking the supercritical natural circulation experimental bench as the research object, the effects of power, flow, pipe diameter and mainstream temperature on the heat transfer coefficient of supercritical water were studied. At the same time, the experimental data of Chen Yuzhou's supercritical water heat transfer coefficient was collected. Through the factorial design method, the influence of different factors and their interactions on the heat transfer coefficient of supercritical water is analyzed. Through the corresponding analysis method, the influencing factors of different levels of heat transfer coefficient are analyzed. It can be found: Except for the effects of flow rate, power, power- temperature and temperature, the influence of other factors on the natural circulation heat transfer coefficient of supercritical water is negligible. When the heat transfer coefficient is low, it is mainly affected by the pipe diameter. As the heat transfer coefficient is further increased, it is mainly affected by temperature and power. When the heat transfer coefficient is at a large level, the influence of the flow rate is the largest at this time.