流体机械Issue(12)：59-63,5.DOI:10.3969/j.issn.1005-0329.2014.12.013
CO2气体冷却器的性能分析与试验研究
Performance Analysis and Experimental Study for CO2 Gas Cooler
摘要
Abstract
Types and heat transfer effects of CO2 gas cooler have greater impact on the performance of the CO2 transcritical cy-cle.Therefore,it is necessary to analyze its heat transfer performance.By being divided infinitesimal units for gas cooler,a compu-tational model was established for the heat transfer process.And the cooling heat transfer coefficient of CO2 side was calculated by using the indirect method for dividing and non-dividing infinitesimal.The obtained results were compared with the calculated val-ues from the several selected heat transfer correlations.The results showed that the values from the divided infinitesimal were al-most higher than those from the correlations.By comprehensive analysis,an appropriate heat transfer correlation was chosen to pro-vide the basis for system and the gas cooler simulation and optimization.Then a new CO2 heat pump test rig is built,and the per-formance of the new gas cooler was tested and compared.The results showed that the new CO2 gas cooler performance has been greatly improved over the original heat exchanger.The purpose of improving the heat exchanger and the system performance is a-chieved through optimization.关键词
跨临界/CO2 气体冷却器/传热系数/关联式Key words
transcritical/CO2 gas cooler/heat transfer coefficient/correlation分类
机械制造引用本文复制引用
杨俊兰,苗国伟,姚钼超..CO2气体冷却器的性能分析与试验研究[J].流体机械,2014,(12):59-63,5.基金项目
天津市科委应用基础及前沿技术研究计划项目 （）
