多壁碳纳米管-低共熔溶剂基纳米流体光热转换实验研究  

STUDY ON PHOTOTHERMAL CONVERSION EXPERIMENT OF MULTI-WALLED CARBON NANOTUBES AND DEEP EUTECTIC SOLVENT-BASED NANOFLUIDS

作　　者：黄英妹 胡艳鑫[1,2] 方润泉 陈洁 郑少斌 黄金 Huang Yingmei;Hu Yanxin;Fang Runquan;Chen Jie;Zheng Shaobin;Huang Jin(School of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,China;Guangdong Provincial Key Laboratory of Fuel Cell Technology,Guangzhou 510641,China)

机构地区：[1]广东工业大学材料与能源学院,广州510006 [2]广东省燃料电池技术重点实验室,广州510641

出　　处：《太阳能学报》2025年第4期358-365,共8页Acta Energiae Solaris Sinica

基　　金：区域联合基金-粤港澳研究团队项目(2021B1515130008);广东省科学技术局重点研发计划(2023B03J1283)。

摘　　要：为开发高性能的直接吸收式太阳能集热器的集热工质,制备以尿素/氯化胆碱组成的低共熔溶剂(DES)为基液,并添加碳纳米管(MWCNT)的纳米流体,结果表明MWCNT-DES纳米流体具有优良的稳定性,在15 d内未出现明显的沉降现象。此外,纳米流体质量浓度越大,其热导率和黏度也越大。对不同种类基液的太阳能光热转换性能展开探究,结果表明与水相比,DES作为基液的纳米流体太阳能光热转换性能更优异。添加MWCNT纳米颗粒可有效提高纳米流体的太阳能光热转换效率。当太阳辐照度为1000 W/m^(2),浓度为0.007%MWCNT-DES纳米流体的太阳能光热转换效率为61.82%,比DES的太阳能光热转换效率提高95%。In order to develop high performance heat collecting fluids for direct absorption solar collectors,nanofluids filled with carbon nanotubes(MWCNT)was prepared using urea/choline chloride composed of a deep eutectic solvent(DES)as a base solution.The results show that MWCNT-DES nanofluids has excellent stability and no obvious settlement in 15 days.In addition,the higher the mass concentration,the greater the thermal conductivity and viscosity of the MWCNT-DES nanofluids.The solar photothermal conversion performance of different types of base fluids was explored,and it is found that compared with water,DES have better solar photothermal conversion performance as a base fluid nanofluids.The addition of MWCNT nanoparticles can effectively improve the solar photothermal conversion efficiency of nanofluids.When the irradiation intensity is 1000 W/m^(2) and the concentration is 0.007%,the solar photothermal conversion efficiency of MWCNT-DES nanofluids is 61.82%,which is 95%higher than that of DES-based liquid.

关 键 词：太阳能 碳纳米管 稳定性 纳米流体 光热转换 

分 类 号：TK519[动力工程及工程热物理—热能工程]