R1234yf瞬态喷雾冷却及过热度影响的实验研究

doi:10.11949/j.issn.0438-1157.20171094

化工学报 ›› 2018, Vol. 69 ›› Issue (2): 595-601.DOI: 10.11949/j.issn.0438-1157.20171094

R1234yf瞬态喷雾冷却及过热度影响的实验研究

王锐¹, 陈斌¹, 王嘉丰¹, 田加猛¹, 周致富¹, 应朝霞²

1 西安交通大学动力工程多相流国家重点实验室, 陕西西安 710049;
2 西安交通大学医学院第二附属医院皮肤科, 陕西西安 710004

收稿日期:2017-08-14 修回日期:2017-10-24 出版日期:2018-02-05 发布日期:2018-02-05
通讯作者: 陈斌, 应朝霞
基金资助:
国家自然科学基金重点项目（51336006）。

Experimental research of R1234yf transient spray cooling and influence of cryogen superheat degree

WANG Rui¹, CHEN Bin¹, WANG Jiafeng¹, TIAN Jiameng¹, ZHOU Zhifu¹, YING Zhaoxia²

1 State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China;
2 Laser Treatment Center, Department of Dermatology, Medical School, Xi'an Jiaotong University, Xi'an 710004, Shaanxi, China

Received:2017-08-14 Revised:2017-10-24 Online:2018-02-05 Published:2018-02-05
Supported by:
supported by the Key Project of the National Natural Science Foundation of China (51336006).

摘要/Abstract

摘要：

制冷剂瞬态喷雾冷却是临床激光治疗的重要辅助手段。当前临床应用及实验研究均采用R134a或R404A进行喷雾冷却，但这两种制冷剂具有极高的温室效应潜能（GWP）值，对环境产生严重威胁。以热物性与R134a相似、而GWP值仅为4的R1234yf作为喷雾冷却的替代制冷剂，对其临床应用进行了探索性研究。表面传热的研究结果显示R1234f的冷却能力略低于R134a与R404A。通过降低制冷剂过热度的方式，可以有效提高喷雾集中程度，在保证闪蒸雾化的前提下显著提高表面热通量，提高R1234yf喷雾临床应用的可行性。

关键词: R1234yf, 喷雾形态, 相变, 表面, 传热

Abstract:

Cryogen spray cooling is a significant assistance to clinical laser therapy. R134a and R404A are currently used in clinical application and experimental research, which both have extremely high global warming potential (GWP) and serious threat to the environment. An exploratory research was conducted on spray cooling by using R1234yf as an alternative cryogen in clinical application due to its similar properties with R134a and low GWP value. The experimental result on surface heat transfer shows its cooling capacity a little worse than R134a and R404A. The concentration of the spray can be effectively enhanced by reducing the superheat degree, and the surface heat flux can be also enhanced on the premise of flashing atomization, which improves the feasibility of R1234yf spray cooling in clinical application.

Key words: R1234yf, spray pattern, phase change, surface, heat transfer

中图分类号:

王锐, 陈斌, 王嘉丰, 田加猛, 周致富, 应朝霞. R1234yf瞬态喷雾冷却及过热度影响的实验研究[J]. 化工学报, 2018, 69(2): 595-601.

WANG Rui, CHEN Bin, WANG Jiafeng, TIAN Jiameng, ZHOU Zhifu, YING Zhaoxia. Experimental research of R1234yf transient spray cooling and influence of cryogen superheat degree[J]. CIESC Journal, 2018, 69(2): 595-601.

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R1234yf瞬态喷雾冷却及过热度影响的实验研究

Experimental research of R1234yf transient spray cooling and influence of cryogen superheat degree

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