开槽泡沫金属镍的流动沸腾机理及性能

doi:10.6040/j.issn.1672-3961.0.2024.336

山东大学学报 (工学版) ›› 2025, Vol. 55 ›› Issue (6): 58-68.doi: 10.6040/j.issn.1672-3961.0.2024.336

• 能动工程——热管理专题 • 上一篇

开槽泡沫金属镍的流动沸腾机理及性能

田涛¹,姜鲲¹,曹峻腾²,郭春生^2,3*

1.国电投莱阳核能有限公司, 山东莱阳 265217;2.山东大学低空科学与工程学院, 山东威海 264209;3.山东大学深圳研究院, 广东深圳 518057

发布日期:2025-12-22
作者简介:田涛(1982— ),男,山东济阳人,研究员,硕士,主要研究方向为先进核能开发. E-mail: bluesy8233@162.com. *通信作者简介:郭春生(1983— ),男,黑龙江绥芬河人,教授,博士生导师,博士,主要研究方向为传热传质理论. E-mail: guo@sdu.edu.cn
基金资助:
山东省重点研发计划资助项目(2022SFGC0501);苏州市科技计划资助项目(SYG202118);深圳市科技计划国际合作研究资助项目(GJHZ20240218113407015);深圳市基础研究专项(自然科学基金)面上资助项目(JCYJ20240813175900001)

Mechanism and properties of slotted metallic nickel foam in flow boiling

TIAN Tao¹, JIANG Kun¹, CAO Junteng², GUO Chunsheng^2,3*

TIAN Tao¹, JIANG Kun¹, CAO Junteng², GUO Chunsheng^{2, 3*}(1. State Power Investment Corporation Laiyang Nuclear Power Co., Ltd., Laiyang 265217, Shandong, China;
2. School of Airspace Science and Engineering, Shandong University, Weihai 264209, Shandong, China;
3. Shenzhen Research Institute of Shandong University, Shenzhen 518057, Guangdong, China

Published:2025-12-22

摘要/Abstract

摘要： 为了深入探究微尺度下不同孔密度和开槽尺寸等参数对泡沫金属镍蒸发器内运行机理的影响,选用3类孔密度(100、500、1 000目)和4类开槽尺寸(0、0.4、0.7、1.0 mm)共12类样品进行流动沸腾换热试验,对样品热流密度、对流换热系数及压降进行计算分析。结果表明,对于孔密度相同的样品,开槽尺寸为0.7 mm的样品对流换热系数最高;在相同开槽尺寸下,试验得出的最优解是孔密度为500 目、开槽尺寸为0.7 mm的样品,相比100目样品对流换热系数提高3.02倍,极限热载荷为152.40 W/cm²,对流换热系数最高达27 630.50 W/(m²·K)。通过硅溶胶对泡沫金属镍进行改性,探究润湿性对换热性能的影响。结果表明,开设槽道与亲水改性两者结合无法起到相互促进的作用,未开槽时亲水改性可以使换热效果提升,但也会大大削弱开槽带来的换热能力的提升,使处理后的样品效果弱于未处理的泡沫金属镍样品。

关键词: 泡沫金属镍, 孔密度, 开槽尺寸, 流动沸腾换热, 泵驱两相回路

Abstract: To investigate the influence of pore density and grooved dimension on the operating mechanism of metallic nickel foam evaporators at the microscale, flow boiling heat transfer experiments were conducted using twelve samples with three pore densities(100, 500, and 1 000 mesh)and four grooved dimensions(0, 0.4, 0.7, and 1.0 mm). The heat flux density, convective heat transfer coefficient and pressure drop were calculated and analysed. The results showed that, for samples with the same pore density, the grooved dimension of 0.7 mm yielded the highest convective heat transfer coefficient. Under identical grooved dimension, the optimal performance was achieved by the sample with the pore density of 500 mesh and the groove dimension of 0.7 mm, which convective heat transfer coefficient increased by 3.02 times compared with the 100 mesh sample, reaching a maximum critical heat flux of 152.40 W/cm² and a peak convective heat transfer coefficient of 27 630.50 W/(m²·K). Surface modification of metallic nickel foam with silica sol was further carried out to examine the effect of wettability on heat transfer. The results indicated that the combination of grooving and hydrophilic modification did not exhibit a synergistic effect. Without grooves, hydrophilic modification enhanced heat transfer performance. However, it also significantly weakened the improvement brought by grooving, resulting in lower performance compared with untreated metallic nickel foam samples.

Key words: metallic nickel foam, pore density, grooved dimension, flow boiling heat transfer, mechanically pumped two-phase loop

中图分类号:

TK17

田涛,姜鲲,曹峻腾,郭春生. 开槽泡沫金属镍的流动沸腾机理及性能[J]. 山东大学学报 (工学版), 2025, 55(6): 58-68.

TIAN Tao, JIANG Kun, CAO Junteng, GUO Chunsheng. Mechanism and properties of slotted metallic nickel foam in flow boiling[J]. Journal of Shandong University(Engineering Science), 2025, 55(6): 58-68.

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开槽泡沫金属镍的流动沸腾机理及性能

Mechanism and properties of slotted metallic nickel foam in flow boiling

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