| 摘要: |
| 本文提出一种应用于数据中心场景的空气冷却器的换热板片设计，介绍了板片的设计思路并对板片间空气流动传热特性进行了数值仿真。利用圆台型丁胞以及不同凹凸方向的棒状丁胞阵列等丁胞结构进行强化传热，并通过数值模拟方法得到了改进芯片的强化传热效果。结果表明：雷诺数Re越高，改进板片的强化传热效果越好，其中改进芯片3在Re为15 091时相对于原始板片可实现等泵下强化传热37%，在Re为5 000时也能实现强化传热20%。对比不同改进板片，发现棒状丁胞阵列的长轴方向及凹凸方向对强化传热效果影响较大，Re为15 091时，通过调节棒状酒窝阵列的布置方式后得到的改进板片3相较于改进板片1可在等泵功下强化传热11%以上。 |
| 关键词: 数据中心 强化传热 丁胞结构 数值模拟 |
| DOI： |
| Received:June 23, 2022Revised:August 30, 2022 |
| 基金项目:国家自然科学基金资助项目（51721004）,西安市科技局的项目(No.2019218714SYS002CG024)资助。 |
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| Design and Numerical Simulation of an Air Handling Unit Heat Exchanger for Data Center Cooling |
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Liu Bing1, Geng Shijiang1, Wang Zixing2, Tao Wenquan2
|
| (1.Zhejiang Extek Technology Co., Ltd.;2.Key Laboratory of Thermal Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University) |
| Abstract: |
| This study proposed a heat exchanger plate design scheme for an air handling unit used in a data center. In this study, the thin plate design idea was introduced step by step, and the flow and heat transfer performance were investigated using a numerical model. Circular estrade dimple and rod-shaped dimple arrays with different concave and convex directions were applied to the plates to enhance heat transfer. The numerical results show that the improved plates have a better heat transfer enhancement effect at larger Reynolds numbers (Re). When the Re is 15 091, compared with the baseline plate, the improved plate 3 enhances the heat transfer by 37% at the same pumping power, while the improved plate 3 enhances the heat transfer by 20% at Re of 5 000. It is found that the axial direction and the transverse directions of the rod-shaped dimple array have a significant influence on the enhancement of heat transfer. When the Re is 15091, compared with the improved plate 1, the improved plate 3 enhances the heat transfer by more than 11% at the same pumping power, by adjusting the arrangement of the rod-shaped dimple array. |
| Key words: data center heat transfer enhancement dimple structure numerical simulation |
