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CO_2—润滑油水平光滑管内流动沸腾换热特性 被引量：7

Characteristics of Flow Boiling Heat Transfer of CO_2—Lubricant Oil in Horizontal Smooth Tube
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摘要 对适用于二氧化碳制冷系统的润滑油进行比选。建立R744(二氧化碳工质)-润滑油(PAG油)混合物(以下简称混合物)水平光滑管内流动沸腾换热特性实验系统,研究在不同工质干度下PAG油质量分数对混合物水平光滑管内流动沸腾换热系数的影响。将实验结果与计算结果(采用经典水平光滑管内流动沸腾换热关联式)进行比较,筛选出适于计算混合物水平光滑管内流动沸腾换热系数的经典换热关联式。 The lubricant oils suitable for CO2 re- frigerant system are compared and selected. An experi- mental system of flow boiling heat transfer of R744 （C02 as working medium） - lubricant oil （PAC oil） mixture （hereinafter referred to as mixture） in horizon- tal smooth tube is developed. The influence of mass fraction of PAC oil at different drynesses of the working mediums on flow boiling heat transfer coefficient of the mixture in horizontal smooth tube is investigated. The experimental results are compared with the calculated results （using classical correlations for flow boiling heat transfer in horizontal smooth tube） , and a classi- cal correlation suitable for calculating flow boiling heat transfer of the mixture in horizontal smooth tube is screened.
作者 胡静 杨俊兰 杜明星
机构地区 天津城市建设学院能源与安全工程学院 天津理工大学自动化学院
出处 《煤气与热力》 2013年第4期13-17,共5页 Gas & Heat
基金 天津市应用基础及前沿技术研究计划项目(10JCYBJC08300)
关键词 二氧化碳跨临界循环 润滑油 水平光滑管内流动沸腾换热 CO2 transcritical cycle lubricant oil flow boiling heat transfer in horizontal smooth tube
分类号 TU995 [建筑科学—供热、供燃气、通风及空调工程]
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参考文献13

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二级参考文献9

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二级引证文献9

煤气与热力
2013年 第4期

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