R404a喷雾冷却表面传热特性的时空不均匀性

doi:10.11949/j.issn.0438-1157.20141516

化工学报 ›› 2015, Vol. 66 ›› Issue (4): 1258-1264.DOI: 10.11949/j.issn.0438-1157.20141516

R404a喷雾冷却表面传热特性的时空不均匀性

王锐¹, 周致富¹, 白飞龙¹, 陈斌¹, 王国祥^1,2

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. 美国Akron大学机械工程系, Ohio Akron 44325

收稿日期:2014-10-09 修回日期:2014-12-26 出版日期:2015-04-05 发布日期:2015-04-05
通讯作者: 陈斌
作者简介:王锐(1989-),男,博士研究生。
基金资助:
国家自然科学基金重点项目(51336006);中央高校基本科研业务费专项资金。

Temporal and radial dependent profiles for surface heat transfer during R404a spray cooling

WANG Rui¹, ZHOU Zhifu¹, BAI Feilong¹, CHEN Bin¹, WANG Guoxiang^1,2

1. State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China;
2. Department of Mechanical Engineering, University of Akron, Akron 44325, Ohio, USA

Received:2014-10-09 Revised:2014-12-26 Online:2015-04-05 Published:2015-04-05
Supported by:
supported by National Natural Science Foundation Key Project (51336006) and the Fundamental Research Funds for the Central University.

摘要/Abstract

摘要：

制冷剂瞬态喷雾冷却是辅助激光手术治疗皮肤病的重要手段,目前采用的R134a制冷剂不易抵消深色人种表皮中的黑色素对激光能量的大量吸收,采用沸点较低的R404a制冷剂能更有效防止表皮的热损伤。使用带膨胀腔的新型喷嘴搭建了瞬态喷雾冷却实验台,采用薄膜热电偶快速测温技术对R404a瞬态喷雾冷却表面传热特性进行了研究。结果表明,R404喷雾冷却表面传热具有时间和空间的不均匀性,然而在喷雾中心半径2 mm的中心区域内存在高热通量的均匀冷却区域。在实际激光皮肤临床手术中,参考实验结果可保证喷雾冷却对治疗范围内的表皮进行均匀冷保护。

关键词: 表面, 传热, 汽化, R404a, 喷雾冷却

Abstract:

Cryogen spray cooling has been applied to protect epidermis from thermal damage during laser surgery. However, the presently used cryogen, R134a shows unsatisfactory efficacy in minimizing laser energy absorption by melanin in darkly pigmented human skins. Previous work of our group showed that R404a had the potential of improving cooling protection to epidermis, while there is few related research on the surface heat transfer during R404a spray cooling. This paper presents an experimental study on the temporal and radial variation in temperature and heat flux during spray cooling using R404a by a specially designed nozzle with expansion chamber, which significantly improved the atomization effect. The temporal and radial conditions strongly influenced uniformity of surface heat transfer. However, there existed a sub-region of uniform cooling with radius of 2 mm around spray center with high heat flux. The result of this experiment could provide guidance for guaranteeing uniform cooling protection during clinical laser surgery.

Key words: surface, heat transfer, evaporation, R404a, spray cooling

中图分类号:

王锐, 周致富, 白飞龙, 陈斌, 王国祥. R404a喷雾冷却表面传热特性的时空不均匀性[J]. 化工学报, 2015, 66(4): 1258-1264.

WANG Rui, ZHOU Zhifu, BAI Feilong, CHEN Bin, WANG Guoxiang. Temporal and radial dependent profiles for surface heat transfer during R404a spray cooling[J]. CIESC Journal, 2015, 66(4): 1258-1264.

参考文献 20

[1]	Lin Xiaoxi (林晓曦), Qi Zuoliang (祁佐良), Dong Jiasheng (董佳生). Research on the mechanism of enlargement of portwine stains [J]. Journal of Practical Aesthetic and Plastic Surgery (实用美容整形外科), 2000, 11 (3): 126-129
[2]	Kim B S, Lee J B, Jang H S, Kwon Y W, Oh C K. Multiple basal cell carcinomas arising in a port-wine stain with a remote history of therapeutic irradiation [J]. J.Dermatol., 2004, 31 (10): 820-823
[3]	Kercher, D M, Sheer R E, So R M C. Short duration heat transfer studies at high free-stream temperatures [J]. Journal of Engineering for Gas Turbines and Power, 1983, 105 (1): 156-166
[4]	Kelly K M, Nelson J S. Update on the clinical management of port wine stains [J]. Lasers in Medical Science, 2000, 15 (4): 220-226
[5]	Karapetian E, Aguilar G, Kimel S, Lavernia E J, Nelson J S. Effects of mass flow rate and droplet velocity on surface heat flux during cryogen spray cooling [J]. Physics in Medicine and Biolog, 2003, 48: N1-N6
[6]	Majaron B, Nelson J S. Optical-Thermal Response of Laser-Irradiated Tissue[M]. Netherlands: Springer, 2011: 859-913
[7]	Nelson J S, Milner T E, Anvari B, Tanenbaum B S, Kimel S, Svaasand L O, Jacques, S L. Dynamic epidermal cooling during pulsed laser treatment of port-wine stain: a new methodology with preliminary clinical evaluation [J]. Arch.Dermatol., 1995, 131 (6): 695-700
[8]	Chang C J, Anvari B, Nelson S J. Cryogen spray cooling for spatially selective photocoagulation of hemangiomas: a new methodology with preliminary clinical reports [J]. Plastic and Reconstructive Surgery, 1998, 102 (2): 459-463
[9]	Tunnell J W, Chang D W, Johnstone C, Torres J H, Patrick C W, Miller M J, Anvari B. Effects of cryogen spray cooling and high radiant exposures on selective vascular injury during laser irradiation of human skin [J]. Arch. Dermatol., 2003, 139 (6): 743-750
[10]	Dai T, Yaseen M A, Diagaradjane P, Yaseen M A, Diagaradjane P. Comparative study of cryogen spray cooling with R-134a and R-404a: implications for laser treatment of dark human skin [J]. J.Biomed.Opt., 2006, 11 (4): 041116-041127
[11]	Zhou Z F, Chen B, Wang Y S, Guo L J, Wang G X. An experimental study on pulsed spray cooling with refrigerant R-404a in laser surgery [J]. Applied Thermal Engineering, 2012, 39: 29-36
[12]	Franco W, Liu J, Wang G X. Radial and temporal variations in surface heat transfer during cryogen spray cooling [J]. Phys.Med.Biol., 2005, 50 (2): 387-397
[13]	Sher E, Bar-Kohany T, Rashkovan A. Flash-boiling atomization [J]. Progress in Energy and Combustion Science, 2008, 34 (4): 417-439
[14]	Zhou Zhifu (周致富), Wu Weitao (吴威涛), Wang Guoxiang (王国祥), Chen Bin (陈斌), Wang Yueshe (王跃社), Gong Zheng (龚政). Thin-film thermocouples for rapid measurement of transient surface temperature in cryogen spray cooling [J]. CIESC Journal (化工学报), 2011, 62 (11): 3060-3064
[15]	Duck F A. Physical Properties of Tissues: A Comprehensive Book [M]. London: Acadamic Press, 1990
[16]	Pikkula B M, Torres J H, Chang D W, Lavernia E J, Nelson J S. Effects of mass flow rate and droplet velocity on surface heat flux during cryogen spray cooling [J]. Phys.Med.Biol., 2001, 28 (2): 113-120
[17]	Taler J. Theory of transient experimental techniques for surface heat thansfer [J]. Heat Mass Transfer, 1996, 17: 3733-3748
[18]	Aguilar G, Wang G X, Nelson J S. Effect of spurt duration on the heat transfer dynamics during cryogen spray cooling [J]. Phys.Med.Biol., 2003, 48: 2168-2181
[19]	Choi B, Welch A J. Infrared imaging of 2-d temperature distribution during cryogen spray cooling Trans [J]. ASME J.Biomech.Eng., 2002, 124: 669-675
[20]	Zhou Z F, Wu W T, Chen B, Wang G X, Guo L J. An experimental study on the spray and thermal characteristics of R134a two-phase flashing spray [J]. International Journal of Heat and Mass Transfer, 2012, 55 (15/16): 4460-4468

R404a喷雾冷却表面传热特性的时空不均匀性

Temporal and radial dependent profiles for surface heat transfer during R404a spray cooling

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献 20

相关文章 15

编辑推荐

Metrics

本文评价

[1]	晁京伟, 许嘉兴, 李廷贤. 基于无管束蒸发换热强化策略的吸附热池的供热性能研究[J]. 化工学报, 2023, 74(S1): 302-310.
[2]	程成, 段钟弟, 孙浩然, 胡海涛, 薛鸿祥. 表面微结构对析晶沉积特性影响的格子Boltzmann模拟[J]. 化工学报, 2023, 74(S1): 74-86.
[3]	吴馨, 龚建英, 靳龙, 王宇涛, 黄睿宁. 超声波激励下铝板表面液滴群输运特性的研究[J]. 化工学报, 2023, 74(S1): 104-112.
[4]	张双星, 刘舫辰, 张义飞, 杜文静. R-134a脉动热管相变蓄放热实验研究[J]. 化工学报, 2023, 74(S1): 165-171.
[5]	张义飞, 刘舫辰, 张双星, 杜文静. 超临界二氧化碳用印刷电路板式换热器性能分析[J]. 化工学报, 2023, 74(S1): 183-190.
[6]	陈爱强, 代艳奇, 刘悦, 刘斌, 吴翰铭. 基板温度对HFE7100液滴蒸发过程的影响研究[J]. 化工学报, 2023, 74(S1): 191-197.
[7]	刘明栖, 吴延鹏. 导光管直径和长度对传热影响的模拟分析[J]. 化工学报, 2023, 74(S1): 206-212.
[8]	王志国, 薛孟, 董芋双, 张田震, 秦晓凯, 韩强. 基于裂隙粗糙性表征方法的地热岩体热流耦合数值模拟与分析[J]. 化工学报, 2023, 74(S1): 223-234.
[9]	齐聪, 丁子, 余杰, 汤茂清, 梁林. 基于选择吸收纳米薄膜的太阳能温差发电特性研究[J]. 化工学报, 2023, 74(9): 3921-3930.
[10]	李科, 文键, 忻碧平. 耦合蒸气冷却屏的真空多层绝热结构对液氢储罐自增压过程的影响机制研究[J]. 化工学报, 2023, 74(9): 3786-3796.
[11]	李艺彤, 郭航, 陈浩, 叶芳. 催化剂非均匀分布的质子交换膜燃料电池操作条件研究[J]. 化工学报, 2023, 74(9): 3831-3840.
[12]	王玉兵, 李杰, 詹宏波, 朱光亚, 张大林. R134a在菱形离散肋微小通道内的流动沸腾换热实验研究[J]. 化工学报, 2023, 74(9): 3797-3806.
[13]	杨欣, 彭啸, 薛凯茹, 苏梦威, 吴燕. 分子印迹-TiO₂光电催化降解增溶PHE废水性能研究[J]. 化工学报, 2023, 74(8): 3564-3571.
[14]	杨越, 张丹, 郑巨淦, 涂茂萍, 杨庆忠. NaCl水溶液喷射闪蒸-掺混蒸发的实验研究[J]. 化工学报, 2023, 74(8): 3279-3291.
[15]	陈天华, 刘兆轩, 韩群, 张程宾, 李文明. 喷雾冷却换热强化研究进展及影响因素[J]. 化工学报, 2023, 74(8): 3149-3170.