Investigating on photothermal conversion properties of plasmonic Ag nanofluids

doi:10.7523/j.issn.2095-6134.2018.02.011

›› 2018, Vol. 35 ›› Issue (2): 222-226.DOI: 10.7523/j.issn.2095-6134.2018.02.011

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Investigating on photothermal conversion properties of plasmonic Ag nanofluids

CHEN Meijie, TANG Tianqi, LIU Ziyu, HE Yurong

School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Received:2017-05-04 Revised:2017-07-03 Online:2018-03-15

Abstract

Abstract: A calculation model incorporating the heat loss is used to study the photothermal conversion characteristics of Ag nanofluids in this work. Adding nanoparticles to the traditional working fluid enhances the light absorption and scattering to obtain better photothermal conversion abilities. The Ag nanofluid with a particle volume fraction of 2.5×10^-6 leads to the maximum temperature rise of 67.31℃, which is 1.8 times that of the base fluid. However, its photothermal conversion efficiency is 2.9 times that of the base liquid since the heat loss is taken into account in the calculation model. With the increase in particle concentration, the temperature rise and the photothermal conversion efficiency gradually increase, and the change rates of temperature rise and photothermal conversion efficiency become gradually small.

Key words: solar energy, Ag nanofluids, plasmonic, photothermal conversion

CLC Number:

TK512

CHEN Meijie, TANG Tianqi, LIU Ziyu, HE Yurong. Investigating on photothermal conversion properties of plasmonic Ag nanofluids[J]. , 2018, 35(2): 222-226.

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Investigating on photothermal conversion properties of plasmonic Ag nanofluids

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