New experimental data of CO2 flow boiling in mini tube with micro fins of zero helix angle
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- 作者：Xiaomin Wu ; wuxiaomin@mail.tsinghua.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Yu Zhu ; Yingjie Tang
- 关键词：CO2 ; Flow boiling ; Heat transfer ; Micro-fin ; Pressure drop
- 刊名：International Journal of Refrigeration
- 出版年：2015
- 出版时间：November 2015
- 年：2015
- 卷：59
- 期：Complete
- 页码：281-294
- 全文大小：4614 K
文摘
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CO2 Flow boiling in micro-fin tube of 0° helix angle was experimentally investigated.
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The heat transfer coefficient sharply decreases at vapor quality around 0.2~0.4.
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The enhancement ratio of heat transfer is higher than that of pressure drop.
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Such kind tubes have potential to enhance the overall heat transfer performance.
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A heat transfer and a pressure drop correlation with good accuracy were proposed.