| 摘要: |
| 对超临界CO2在套管内的换热特性进行了实验研究，探讨了超临界CO2换热过程中，质量流率、压力和入口温度的变化对换热性能特性和压降的影响。实验得出，换热系数随着质量流率的增加而增加；而换热系数随压力的增加而减少；入口温度的变化对换热系数基本没有影响；压降随着入口温度的升高而逐渐增大；并给出了Re和Nu数的变化规律。研究为超临界二氧化碳换热器的设计提供了依据。 |
| 关键词: 热工学 换热系数 压降 超临界二氧化碳 超临界 二氧化碳 管内换热 实验 研究 Tube Supercritical Carbon Dioxide Heat Transfer Study 设计 换热器 变化规律 换热系数 影响 压降 性能特性 入口温度 压力 质量流率 换热过程 |
| DOI：10.3969/j.issn.0253-4339.年份（4位数字）.月份（2位数字）.文章的起始页码（3位数字） |
| 投稿时间：2007-09-10
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| 基金项目:天津市自然科学基金 |
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| Experimental Study on Heat Transfer of Supercritical Carbon Dioxide in Tube |
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| Abstract: |
| The experiment was conducted to investigate the heat transfer of supercritical carbon dioxide in tubes. The effects of mass flux, pressure and inlet temperature on heat transfer characteristics and pressure drop were analyzed. The results show that the heat transfer coefficient is directly proportional to the mass flux, and it decreases with the increase of the pressure and does not vary with the inlet temperature. In addition, the pressure drop increases with the increase of the inlet temperature. |
| Key words: Pyrology Heat transfer coefficient Pressure drop Supercritical carbon dioxide |
