化工学报2019，Vol.70Issue(1)：56-64,9.DOI:10.11949/j.issn.0438⁃1157.20180487
CO2管内流动沸腾换热模型评价研究
Evaluation research on boiling heat transfer model of CO2 in tube
摘要
Abstract
Due to good environmental characteristics and excellent thermodynamic properties, CO2 is considered as an ideal alternative refrigerant. Compared with the traditional refrigerant, CO2 flow boiling heat transfer characteristics is very different. However, the existing heat transfer correlations are based on their respective test data fitting, because the data points are too less and the range of variable parameters is limited, the predicted results are very different. To establish the CO2 tube flow boiling heat transfer in a more comprehensive database, compare and analyze different heat transfer models, it is of great significance for deep understanding of the boiling heat transfer characteristics of CO2 in tube and study more accurate heat transfer correlation. There are six correlations analyzed by using 4040 experimental data points of CO2 flow boiling heat transfer from 24 references, the study found that for Fang (2013) correlation minimum error is 10.6%, and draw the variation of gas and liquid Reynolds number with pipe diameter, and the change of gas and liquid Reynolds number scatter plot and the plot of Nusselt number change with Bond number, it can provide insight into the CO2 tube flow boiling heat transfer characteristics and the future research a new type of heat transfer correlations for more accurate to provide the reference.关键词
二氧化碳/流动沸腾/干涸/传热系数Key words
carbon dioxide/flow boiling/dry/heat transfer coefficient分类
能源科技引用本文复制引用
刘忠彦,孙大汉,金旭,王天皓,马一太..CO2管内流动沸腾换热模型评价研究[J].化工学报,2019,70(1):56-64,9.基金项目
吉林市科技发展创新项目(201750214) （201750214）
东北电力大学博士启动基金项目(BSJXM-201507) （BSJXM-201507）
吉林省重点科技研发项目(20180201006SF) （20180201006SF）
