R1336mzz闪蒸喷雾冷却传热特性的实验研究  

Experimental Study on Heat Transfer Characteristics of R1336mzz Flash Evaporation Spray Cooling

作　　者：张志伟 李强[1] 胡定华[1] ZHANG Zhi-Wei;LI Qiang;HU Ding-Hua(MIIT Key Laboratory of Thermal Control of Electronic Equipment,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学电子设备热控制工信部重点实验室,南京210094

出　　处：《工程热物理学报》2022年第2期506-510,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金青年基金(No.51706102);中央高校基本科研业务费专项资金资助项目(No.30917011325)。

摘　　要：闪蒸喷雾冷却是高热流密度电子器件有效的散热技术之一。本研究采用新型工质R1336mzz,建立了一个闭式闪蒸喷雾冷却实验平台,研究了喷雾流量和入口温度等影响因素对其传热特性的影响。实验结果表明,闪蒸喷雾冷却的传热性能随流量的增加先增大后减小,在流量为1.4 L/min时,获得最佳的传热性能,临界热流密度最高可达349 W/cm^(2)。较高的入口温度能够改善传热性能,这是因为高入口温度有助于提高闪蒸雾化效果,产生更多细小液滴,大大提高了闪蒸喷雾冷却系统的传热性能。Flash spray cooling is one of the effective heat dissipation technologies for electronic devices with high heat flux.In this study,a closed-loop flash spray cooling system was established using the working fluid R1336mzz to investigate the effects of spray flow rate and inlet temperature on the heat transfer characteristics.The experimental results showed that there was an optimum flash spray flow rate making the heat transfer performance best,and the highest CHF of 349 W/cm^(2) can be achieved by the flow rate of 1.4 L/min.Higher inlet temperature greatly enhanced the heat transfer performance of flash spray cooling system.This is because the high inlet temperature helps to improve the atomization characteristics,and generates finer droplets,which greatly improves the heat transfer performance of the flash spray cooling system.

关 键 词：闪蒸喷雾冷却 R1336mzz 相变 

分 类 号：TK124[动力工程及工程热物理—工程热物理]