Experimental study on thermophysical properties of nanofluids as phase-change material (PCM) in low temperature cool storage
Experimental study on thermophysical properties of nanofluids as phase-change material (PCM) in low temperature cool storage
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纳米流体作为相变材料（PCM）的低温蓄冷热物性实验研究
DOI：
10.1016/j.enconman.2012.04.010
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发表时间：
2012-12-01
影响因子：
10.4
通讯作者：
Liu, Yudong
中科院分区：
文献类型：
--
作者：
He, Qinbo;Wang, Shuangfeng;Liu, Yudong
本文通过将少量纳米TiO2悬浮于饱和BaCl2水溶液中，制备了一种新型的纳米流体相变材料。研究了纳米流体相变材料的导热系数、过冷度、潜热、比热和流变行为。实验结果表明，当体积分数为1.130%时，纳米流体相变材料在5 ℃时的导热系数提高了12.76%，过冷度降低了84.92%。悬浮纳米粒子的潜热和比热略有下降。随着体积分数的增加，蓄冷系统的粘度增大，但对蓄冷系统的性能没有影响。纳米流体相变材料具有较高的热性能，适用于工业低温储能。(C)2012爱思唯尔有限公司保留所有权利。
In this article, a new sort of nanofluid phase change materials (PCMs) is developed by suspending a small amount of TiO2 nanoparticles in saturated BaCl2 aqueous solution. Its thermal conductivities, supercooling degree, latent heat, specific heat, and rheological behaviors of the nanofluids PCMs were investigated. The experimental results show that with volume fraction is 1.130%, the thermal conductivities of nano-fluids PCMs is enhanced by 12.76% at 5 degrees C, the supercooling degree is reduced by 84.92%. The latent heat and specific heat are slightly decreased with suspending nanoparticles. The viscosity increased with the increasing volume fraction, which will have no effect on the cool storage system. The higher thermal performances of nanofluids PCMs indicate that they are suitable for the industries low temperature energy storage. (C) 2012 Elsevier Ltd. All rights reserved.