Experimental Study on Heat Transfer Performance of Phase Change Spray Cooling with R134a

doi:10.7652/xjtuxb201501016

您当前的位置：

首页 >

文章列表页 >

Experimental Study on Heat Transfer Performance of Phase Change Spray Cooling with R134a

更新时间：2025-07-09

- Experimental Study on Heat Transfer Performance of Phase Change Spray Cooling with R134a
- Vol. 49, Issue 1, Pages: 97-101(2015)
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201501016
  CLC： TB61
- Online First：10 January 2015，
  
  Published：2015
- 稿件说明：
移动端阅览
Experimental Study on Heat Transfer Performance of Phase Change Spray Cooling with R134a[J]. 2015, 49(1): 97-101.
DOI：

Experimental Study on Heat Transfer Performance of Phase Change Spray Cooling with R134a[J]. 2015, 49(1): 97-101. DOI： 10.7652/xjtuxb201501016.

摘要

为了研究大热流密度相变喷雾的冷却特性

搭建了以R134a为冷却工质的闭式循环喷雾实验台

开展了采用R134a工质的相变喷雾冷却性能实验。实验工况为:喷雾高度13 mm

喷雾腔压力0.2 MPa

喷嘴入口温度0 ℃

喷雾流量范围为0.210 7～0.355 8 L/min。实验结果表明:当喷雾流量保持不变时

增大加热功率

热流密度增大

表面换热系数先快速升高最后有所下降; 随着喷雾流量从0.210 7 L/min增加到0.355 8 L/min

临界热流密度呈现上升趋势; 当流量为0.355 8 L/min时

获得最高的临界热流密度(CHF)为94.75 W/cm

此时冷却表面的壁面温度为35.42 ℃。这说明使用环保工质R134a作为冷却剂的喷雾冷却系统能同时满足高热流密度和低换热表面温度的要求

具有良好、稳定的换热冷却能力。

Abstract

A closed loop spray cooling system with R134a refrigerant was designed

and experiments of cooling performance were conducted to make a deep study on high heat flux phase change spray cooling mechanism. The experiments were conducted at the spray height of 13 mm

the spray chamber pressure of 0.2 MPa and the inlet temperature of 0 ℃. The range of flow rate was from 0.210 7 L/min to 0.355 8 L/min. The results show that the heat flux increases steadily with an increase in the power input when the flow rate keeps unchanged. Moreover

the heat transfer coefficient rises rapidly first and then fall1. The heat flux has an increasing trend when the flow rate increases form 0.210 7 L/min to 0.355 8 L/min

and the maximum heat flux wit

h value 94.75 W/cm

is obtained when the flow rate is 0.355 8 L/min. Meanwhile

the spray cooling surface temperature keeps at 35.42 ℃. The results of experiments indicate that R134a has a stable heat cooling capacity as a spray cooling refrigerant and meets the requirement of high heat flux with low temperature of cooling surface.

关键词

Keywords

references

钟昕, 刘秀芳, 赵红利, 等. 相变喷雾冷却技术的研究进展 [J]. 低温工程, 2011, 180(2): 34-38.

ZHONG Xin, LIU Xiufang, ZHAO Hongli, et al. Development of spray cooling on boiling region [J]. Cryogenics, 2011, 180(2): 34-38.

KIM J. Spray cooling heat transfer: the state of the art [J]. International Journal of Heat and Fluid Flow, 2007, 28(4): 753-767.

LIN L, PONNAPPAN R. Heat transfer characteristics of evaporative spray cooling in a closed loop [J]. International Journal of Heat and Mass Transfer, 2003, 46(20): 3737-3746.

YANG J, CHOW L C, PAIS M R. Nucleate boiling heat transfer in spray cooling [J]. Journal of Heat Transfer, 1996, 118(3): 668-671.

COURSEY J S, KIM J, KIGER K T. Spray cooling of high aspect ratio open micro channels [J]. Journal of Heat Transfer, 2007, 129(8): 1052-1059.

GHODBANE M, HOLMAN J P. Experimental study of spray cooling with freon-113 [J]. International Journal of Heat and Mass Transfer, 1991, 34(4/5): 1163-1174.

王宏, 余勇胜, 朱恂. 氨饱和压力对喷雾相变冷却特性的影响 [J]. 中国激光, 2011, 38(7): 21-25.

WANG Hong, YU Yongsheng, ZHU Xun. Effects of saturation pressure on spray cooling with ammonia [J]. Chinese Journal of Lasers, 2011, 38(7): 21-25.

刘炅辉, 李梦京, 刘秀芳, 等. 以R22为冷却剂的闭式循环相变喷雾冷却的实验研究 [J]. 西安交通大学学报, 2013, 47(1): 132-136.

LIU Jionghui, LI Mengjing, LIU Xiufang, et al. Experiment on phase change spray cooling of closed cycle with R22 [J]. Journal of Xi'an Jiaotong University, 2013, 47(1): 132-136.

HOU Yu, LIU Xiufang, LIU Jionghui, et al. Experimental study on phase change spray cooling [J]. Experimental Thermal and Fluid Science, 2013, 46(3): 84-88.

KLINE S J, MCCLINTOCK F A. Describing uncertainties in single sample experiments [J]. Mechanical Engineering, 1953, 75(1): 3-7.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study on the Influence Mechanism of Ambient Temperature and Pressure on Single Droplet Evaporation Characteristics of HFE7100 Refrigerant

Experimental Study on Start-up Process of Pulsating Heat Pipe

Experimental Study on Pool Boiling Heat Transfer of R134a-Oil Mixture Outside Single Horizontal Enhanced Tubes

Experimental Study on Miscibility of R134a/R600a Refrigerant and Mineral Oil Mixture

Experimental Study on the Effect of Elliptical Inlet Nozzle on Performance of Multi-Blade Centrifugal Fan

Related Author

ZHOU Zhifu

CHEN Bin

Leslie K.NORVIHOHO

LIU Yi

YIN Jing

王瑞祥 1

徐荣吉 1

Related Institution

State Key Laboratory of Multipbase Flow in Power Engineering, Xi'an Jiaotong University

Department of Refrigerating and Cryogenic Engineering, Xi'an Jiaotong University

School of Mechanical Engineer, Dalian Jiaotong University

School of Energy and Power Engineering, Xi'an Jiaotong University

Institute of Refrigeration and Cryogenics, Zhejiang University

⁰