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A theoretical investigation of the optical properties of metal nanoparticles in water for photo thermal conversion enhancement

机译:水中金属纳米粒子光学性能增强光热转化的理论研究

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摘要

Nanofluids are used in photo thermal absorbers such as direct absorption solar collectors (DASC) to improve the absorption and heat transfer. A range of experimental studies have investigated the photo thermal conversion in nanofluids based on metal nanoparticles. The photo thermal conversion efficiency depends Mainly on the ability of the metal nanoparticle based nanofluid (LSPR). In this article we investigate the optical properties of metal nanoparticles in water, and based on this we judge their suitability for use inwater based nanofluids. We simulate the optical properties and provide an overview of the absorption, scattering and extinction properties of solid and spherical aluminum, silver, copper and gold nanoparticles suspended in water. We study nanoparticle diameters between 20 and 140 nm for the wavelength range 300-1350 nm (200-1250 nm for aluminum). We compare our simulation results with the available experimental results presented in the literature, and find good agreement. (C) 2017 Elsevier Ltd. All rights
机译:纳米流体用于光热吸收器中,例如直接吸收式太阳能收集器(DASC),以改善吸收和热传递。一系列实验研究已经研究了基于金属纳米粒子的纳米流体中的光热转化。光热转换效率主要取决于基于金属纳米颗粒的纳米流体(LSPR)的能力。在本文中,我们研究了金属纳米粒子在水中的光学特性,并据此判断它们在水基纳米流体中的适用性。我们模拟了光学性质,并概述了悬浮在水中的固体和球形铝,银,铜和金纳米粒子的吸收,散射和消光性质。我们研究波长范围为300-1350 nm(铝为200-1250 nm)的20至140 nm之间的纳米粒子直径。我们将仿真结果与文献中提供的可用实验结果进行比较,并找到了很好的一致性。 (C)2017 Elsevier Ltd.版权所有

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