化工学报2017，Vol.68Issue(9)：3420-3426,7.DOI:10.11949/j.issn.0438-1157.20170321
R290在水平光滑管内的沸腾换热
Boiling heat transfer performances of R290 in smooth horizontal tubes
摘要
Abstract
The boiling heat transfer characteristics of R290 in smooth horizontal copper tubes with inner diameters of 4,6 mm was investigated experimentally. The effects of mass flux, heat flux, saturated temperature and inner diameter of tube on boiling heat transfer coefficient and critical quality were analyzed. Five boiling heat transfer correlations which are suitable to predict the boiling heat transfer coefficients of R290 in horizontal tube were chosen to obtain the calculated data compared with experimental data of boiling heat transfer coefficient. The correlation with the minimum error between calculated and experimental data among these five correlations was considered as the most suitable one for the investigation. The results showed that boiling heat transfer coefficient increased with the decrease of inner diameter of tube, with the increase of mass flux, or with the increase of saturated temperature. It increased first and then decreased with the increase of heat flux while vapor quality was increasing gradually. Heat flux and inner diameter had more evident effects on critical quality than mass flux and saturated temperature. Critical quality increased with the decrease of heat flux and inner diameter. Among the five correlations, Fang correlation showed the best capacity of prediction for the boiling heat transfer coefficients.关键词
R290/气液两相流/传热/水平光滑管/蒸发/预测Key words
R290/gas-liquid two-phase flow/heat transfer/smooth horizontal tube/vaporization/prediction分类
能源科技引用本文复制引用
戴源德,林秦汉,邹思凯,郭玉洁..R290在水平光滑管内的沸腾换热[J].化工学报,2017,68(9):3420-3426,7.基金项目
江西省自然科学基金项目(20161BAB206124). supported by the Natural Science Foundation of Jiangxi Province (20161BAB206124). （20161BAB206124）
