Nanofluids with full-spectrum absorption properties are highly desirable for direct solar thermal energy conversion applications.In this work,Ag and CsW03 nanofluids,which exhibit absorption both in the visible and ne...Nanofluids with full-spectrum absorption properties are highly desirable for direct solar thermal energy conversion applications.In this work,Ag and CsW03 nanofluids,which exhibit absorption both in the visible and near-infrared(NIR)region,are integrated to obtain two>component hybrid nanofluids.The hybrid nanofluids show broad band absorption with a solar weighted absorption fraction of 99.6%,compared to 18%and 54%for the base liquid(ethylene glycol)and CsW03 nanofluids,respectively.The highest photo-thermal conversion performance for the hybrid nanofluids is obtained with Ag/CsW03 weight ratio of 3/7.The solar thermal conversion efficiency of the optimum hybrid nanofluids is 67%,10%and 15%higher than single Ag and CsW03 nanofluids.The two-component hybrid nanofluid provides an alternative for making the best use of solar energy.展开更多
基金The work was supported by National Natural Science Foundation of China(Grant No.51590901 and No.51876112)Hunan Provincial Natural Science Fund(2018JJ3478)the key project of Hunan Provincial Education Department(No.19A448).
文摘Nanofluids with full-spectrum absorption properties are highly desirable for direct solar thermal energy conversion applications.In this work,Ag and CsW03 nanofluids,which exhibit absorption both in the visible and near-infrared(NIR)region,are integrated to obtain two>component hybrid nanofluids.The hybrid nanofluids show broad band absorption with a solar weighted absorption fraction of 99.6%,compared to 18%and 54%for the base liquid(ethylene glycol)and CsW03 nanofluids,respectively.The highest photo-thermal conversion performance for the hybrid nanofluids is obtained with Ag/CsW03 weight ratio of 3/7.The solar thermal conversion efficiency of the optimum hybrid nanofluids is 67%,10%and 15%higher than single Ag and CsW03 nanofluids.The two-component hybrid nanofluid provides an alternative for making the best use of solar energy.
