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使用不同类型纳米流体的计算机冷却系统热性能和压力性能的实验研究

Experimental Investigation of Thermal and Pressure Performance in Computer Cooling Systems Using Different Types of Nanofluids.

作者信息

Alfaryjat Altayyeb, Miron Lucian, Pop Horatiu, Apostol Valentin, Stefanescu Mariana-Florentina, Dobrovicescu Alexandru

机构信息

Faculty of Mechanical Engineering and Mechatronics, University Politehnica of Bucharest, Splaiul Independentei nr. 313, Sector 6, 060042 Bucharest, Romania.

出版信息

Nanomaterials (Basel). 2019 Aug 29;9(9):1231. doi: 10.3390/nano9091231.

DOI:10.3390/nano9091231
PMID:31470679
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6780799/
Abstract

A modern computer generates a great amount of heat while working. In order to secure appropriate working conditions by extracting the heat, a specific mechanism should be used. This research paper presents the effect of nanofluids on the microchannel heat sink performance of computer cooling systems experimentally. CeO, AlO and ZrO nanoparticles suspended in 20% ethylene glycol and 80% distilled water are used as working fluids in the experiment. The concentration of the nanoparticles ranges from 0.5% to 2%, mass flow rate ranges from 0.028 kg/s to 0.084 kg/s, and the ambient temperature ranges from 25 °C to 40 °C. Regarding the thermal component, parameters such as thermophysical properties of the nanofluids and base fluids, central processing unit (CPU) temperature, heat transfer coefficient, pressure drop, and pumping power have been experimentally investigated. The results show that CeO-EG/DW, at a concentration of 2% and a mass flow rate of 0.084 kg/s, has with 8% a lower temperature than the other nanofluids and with 29% a higher heat transfer coefficient compared with the base fluid. The AlO-EG/DW shows the lowest pressure drop and pumping power, while the CeO-EG/DW and ZrO-EG/DW show the highest. However, a slight increase of pumping power and pressure drop can be accepted, considering the high improvement that the nanofluid brings in computer cooling performance compared to the base fluid.

摘要

现代计算机在工作时会产生大量热量。为了通过散热来确保合适的工作条件，应使用特定的机制。本研究论文通过实验展示了纳米流体对计算机冷却系统微通道散热器性能的影响。实验中使用悬浮在20%乙二醇和80%蒸馏水混合液中的CeO、AlO和ZrO纳米颗粒作为工作流体。纳米颗粒的浓度范围为0.5%至2%，质量流率范围为0.028 kg/s至0.084 kg/s，环境温度范围为25°C至40°C。关于热学组件，对纳米流体和基础流体的热物理性质、中央处理器（CPU）温度、传热系数、压降和泵浦功率等参数进行了实验研究。结果表明，浓度为2%且质量流率为0.084 kg/s的CeO-EG/DW，其温度比其他纳米流体低8%，与基础流体相比，传热系数高29%。AlO-EG/DW的压降和泵浦功率最低，而CeO-EG/DW和ZrO-EG/DW的最高。然而，考虑到纳米流体与基础流体相比在计算机冷却性能方面的显著提升，泵浦功率和压降的轻微增加是可以接受的。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/9ec15331fdfe/nanomaterials-09-01231-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/16e11a7ca897/nanomaterials-09-01231-g001a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/ae4105d8cb6b/nanomaterials-09-01231-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/9af087e4496c/nanomaterials-09-01231-g003a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/2a306fefbaff/nanomaterials-09-01231-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/3b0362b1654b/nanomaterials-09-01231-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/091c6435c326/nanomaterials-09-01231-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/db3b7f70de98/nanomaterials-09-01231-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/aadc60148a67/nanomaterials-09-01231-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/9ec15331fdfe/nanomaterials-09-01231-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/16e11a7ca897/nanomaterials-09-01231-g001a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/ae4105d8cb6b/nanomaterials-09-01231-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/9af087e4496c/nanomaterials-09-01231-g003a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/2a306fefbaff/nanomaterials-09-01231-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/3b0362b1654b/nanomaterials-09-01231-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/091c6435c326/nanomaterials-09-01231-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/db3b7f70de98/nanomaterials-09-01231-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/aadc60148a67/nanomaterials-09-01231-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d959/6780799/9ec15331fdfe/nanomaterials-09-01231-g009.jpg

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