| 电加热结构内纳米流体稳定性实验研究 |
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| 引用本文： | 郑丹,王哲,陈占秀,朱恒宣,王进. 电加热结构内纳米流体稳定性实验研究[J]. 工程热物理学报, 2021, 42(4): 973-978 |
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| 作者姓名： | 郑丹 王哲 陈占秀 朱恒宣 王进 |
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| 作者单位： | 河北工业大学能源与环境工程学院,天津300401 |
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| 基金项目： | 河北省自然科学基金(No.E2020202121,No.E2019202184)。 |
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| 摘 要： | 实验以比例为4∶6的乙二醇水溶液(EGW)为基液,采用两步法制备了质量分数为0.5％、1.0％、1.5％和2.0％的Cu-EGW、Al2O3-EGW和Fe3O4-EGW纳米流体.通过分段加热测试,对比分析了三种纳米流体在电加热结构中的加热效果,并研究了 Cu-EGW纳米流体的热稳定性.实验结果表明,在三种纳米流体中Cu...
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| 关 键 词： | 纳米流体 电加热结构 热稳定性 加热效率 |
Experimental Study on the Stability of Nanofluids in an Electric Heating Structure |
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| ZHENG Dan,WANG Zhe,CHEN Zhan-Xiu,ZHU Heng-Xuan,WANG Jin. Experimental Study on the Stability of Nanofluids in an Electric Heating Structure[J]. Journal of Engineering Thermophysics, 2021, 42(4): 973-978 |
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| Authors: | ZHENG Dan WANG Zhe CHEN Zhan-Xiu ZHU Heng-Xuan WANG Jin |
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| Affiliation: | (School of Energy and Environmental Engineering,Hebei University of Technology,Tianjin 300401,China) |
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| Abstract: | In order to prepare Cu,Al2 O3 and Fe3 O4 nanofluids with various mass fractions(0.5%,1.0%,1.5%and 2.0%)by a two-step method,the mixture of the ethylene glycol and deionized water(EGW)with a ratio of 4:6 was used as base fluid.The heating effect of these nanofluids in an electric heating structure was comparatively analyzed in different stages.Thermal stability tests of the Cu-EGW nanofluid were also conducted.Results indicate that the Cu-EGW nanofluid shows the best heating effect in the tested nanofluids.It is found that at the 30-day retest,when Cu-EGW nanofluid is used as the heating medium,the average temperature values of the middle fin and ambient air are reduced by up to 7.4%and 3.8%. |
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| Keywords: | nanofluid electric heating structure thermal stability heating efficiency |
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