摘要
设计并搭建带冷凝回流的闭合回路沸腾换热实验装置,研究了质量分数为0.0005%、0.001%、0.002%和0.003%的水基二氧化硅(SiO_(2))纳米流体、水基石墨烯(GNs)纳米流体、水基和乙二醇水基SiO_(2)与GNs混合(SiO_(2)/GNs-DW,SiO_(2)/GNs-EG-DW)纳米流体沸腾换热性能。结果表明:纳米流体沸腾换热性能高于超纯水;水基SiO_(2)、水基GNs纳米流体质量分数为0.002%时沸腾换热性能最佳,临界热流密度(CHF)分别比超纯水高23.4%和37.8%;相同情况下,最大传热系数(HTC)分别比超纯水高15.7%和39.6%;水基SiO_(2)/GNs纳米流体的CHF和最大HTC随着质量分数增加而增大,质量分数为0.003%时达到最大值,分别比超纯水高48.9%和60.2%;加入不同纳米颗粒对流体沸腾换热性能影响较大,SiO_(2)/GNs纳米流体沸腾换热性能显著高于SiO_(2)纳米流体和GNs纳米流体,GNs纳米流体沸腾换热性能高于SiO_(2)纳米流体;乙二醇水基SiO_(2)/GNs纳米流体与水基SiO_(2)/GNs纳米流体具有相近的CHF。
An experimental closed-loop boiling heat transfer device with the reflux condenser was designed and built.The boiling heat transfer properties of water-based silica(SiO_(2))nanofluids,water-based graphene(GNs)nanofluids,and water-based and ethylene glycol water-based SiO_(2) and GNs(SiO_(2)/GNs-DW,SiO_(2)/GNs-EG-DW)mixed nanofluids at mass fractions of 0.0005%,0.001%,0.002%and 0.003%were studied.The results show that the boiling heat transfer performance of nanofluids is higher than that of ultrapure water.When the mass fraction of water-based SiO_(2) and water-based GNs nanofluids is 0.002%,the boiling heat transfer performance is optimal,and the critical heat fluxes(CHF)are 23.4%and 37.8%higher than those of ultrapure water,respectively.Under the same condition,the maximum heat transfer coefficients(HTC)are 15.7%and 39.6%higher than those of ultrapure water,respectively.The CHF and the maximum HTC of water-based SiO_(2)/GNs nanofluids increase with the increase of mass concentration and reach the maximum at 0.003%,which are 48.9%and 60.2%higher than those of ultrapure water,respectively.Adding different nanoparticles has great influence on the boiling heat transfer performance of fluid.The boiling heat transfer performance of SiO_(2)/GNs nanofluids is significantly higher than that of SiO_(2) nanofluids and GNs nanofluids,and the boiling heat transfer performance of GNs nanofluids is higher than that of SiO_(2) nanofluids.The CHF of ethylene glycol water-based SiO_(2)/GNs nanofluids is close to that of water-based SiO_(2)/GNs nanofluids.
作者
宋印东
徐静雅
马旭
徐毅煜
SONG Yin-dong;XU Jing-ya;MA Xu;XU Yi-yu(School of Energy and Power Engineering,Jiangsu University of Science and Technology,Zhenjiang,China,212028)
出处
《热能动力工程》
CAS
CSCD
北大核心
2022年第3期101-109,共9页
Journal of Engineering for Thermal Energy and Power
基金
江苏省研究生科研与实践创新计划项目(SJCX20_1464)
船舶涂装排放治理及危废物处理技术与装备研发项目(MC-202003-Z01-07)。
作者简介
宋印东(1977-),男,辽宁鞍山人,江苏科技大学副教授;通讯作者:徐静雅(1995-),女,安徽宣城人,江苏科技大学硕士研究生.
