Multi-nozzle Closed Loop Spray Cooling Systems in Electronics Cooling

2018 International Conference on Civil and Hydraulic Engineering

土木建筑工程;水利工程

Xie, Jinlong^1 ; Lee, Hsiao Mun^1 ; Xiang, Jianhua^1

School of Mechanical and Electric Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, 230 Wai Huan Xi Road, Guangzhou

510006, China^1

关键词: Closed loop spray cooling;    Concentrated heat sources;    Cooling applications;    Electronics cooling;    High heat flux;    Multi nozzles;    Small systems;    Uniform heat flux;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/189/2/022062/pdf
DOI  :  10.1088/1755-1315/189/2/022062

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

This study presents two refrigerant closed loop spray cooling systems for two specific electronic cooling applications. A small system using a 3 2 nozzle array is developed to investigate the spray cooling performance on a concentrated heat source (2 1 cm2) with a high heat flux. A big system uses a 9 6 nozzle array to cool a 6U card area (23.3 16 cm2) with a moderate uniform heat flux. The experimented flow rate in the small system is maintained at 7.8∼8.1 g/s corresponding to a spray mass flux of 3.9∼4.05 g/cm2⋅s on the concentrated heat source, and the studied flow rates in the big system are monitored at 113 4 g/s corresponding to a spray mass flux of 0.30 g/cm2⋅s on the 6U card surface area. The results show that the small system with a much higher spray mass flux can perform a spray cooling curve with a wide heat flux range. The big system with much less spray mass flux has performed a slightly better heat transfer coefficient due to its much better evaporation efficiency at the same degree of surface superheat.