首页|期刊导航|高技术通讯（英文版）|Experimental study of heat transfer of ultra-supercritical pressure water in vertical upward internally ribbed tube
高技术通讯（英文版）2007，Vol.13Issue(1)：17-22,6.
Experimental study of heat transfer of ultra-supercritical pressure water in vertical upward internally ribbed tube
Experimental study of heat transfer of ultra-supercritical pressure water in vertical upward internally ribbed tube
摘要
Abstract
Under ultra-supercritical pressure, the heat transfer characteristics of water in vertical upward 4-head internally ribbed tubes with a diameter of 28.65mm and thickness of 8mm were experimentally studied.The experiments were performed at P=25～34MPa,G=450～1800kg/(m2·s)and q=200～600kW/m2. The results show that the pressure has only a moderate effect on the heat transfer of ultra-supercritical water when the water temperature is below the pseudocritical point. Sharp rise of the wall temperature near the pesudocritical region occurs earlier at a higher pressure. Increasing the mass velocity improves the heat transfer with a much stronger effect below the pesudocritical point than that above the pesudocritical point. For given pressure and mass velocity, the inner wall heat flux also shows a significant effect on the inner wall temperature, with a higher inner wall heat flux leading to a higher inner wall temperature. Increasing of inner wall heat flux leads to an early occurrence of sharp rise of the wall temperature. Correlations of heat transfer coefficients are also presented for vertical upward internally ribbed tubes.关键词
heat transfer/supercritical/ultra-supercritical/vertical upward internally ribbed tubeKey words
heat transfer/supercritical/ultra-supercritical/vertical upward internally ribbed tube分类
数理科学引用本文复制引用
Wang Weishu,Chen Tingkuan,Luo Yushan,Gu Hongfang,Yin Fei..Experimental study of heat transfer of ultra-supercritical pressure water in vertical upward internally ribbed tube[J].高技术通讯（英文版）,2007,13(1):17-22,6.基金项目
Supported by the High Technology Research mid Development Programme of China(No.2002AA526012) and the National Natural Science Foundation of China(No.50323001). （No.2002AA526012）
