纳米流体
材料科学
计算流体力学
吸收(声学)
炭黑
热的
太阳能集热器中的纳米流体
纳米颗粒
工作液
碳纤维
化学工程
基础(拓扑)
胶体
热力学
复合材料
纳米技术
物理
复合数
工程类
数学分析
天然橡胶
光电-热混合太阳能集热器
数学
作者
Linna V. Nguyen,Pawel Kosinski,Boris V. Balakin,Anna Kosinska
标识
DOI:10.1016/j.ijthermalsci.2023.108292
摘要
In this paper, an experimental and numerical analysis was performed on both carbon black nanofluids and a biodegradable fluid in a novel pump-free direct absorption solar collector (DASC). In the experiments, the nanofluid consisted of carbon black nanoparticles in water with concentrations ranging from 0.005 to 0.020 wt%, while the biodegradable fluid was coffee colloid. The overall findings indicated a concurrence: the nanofluids exhibited the best thermal performance when compared to pure water. The optimum nanoparticle concentration of 0.010 wt% carbon black yielded a 102% thermal enhancement compared to the base fluid. Furthermore, a numerical analysis using computational fluid dynamics (CFD) software was performed to study the experimental rig. According to these simulations, the optimal nanofluid concentration showed a 76.6 - 90.9% increase compared to the base fluid. The biodegradable fluids did not show a significant enhancement in the experiments, which differs from what has been reported in the scientific literature. Nevertheless, from the computer simulations, the biodegradable fluids also slightly outperformed the case when the pure water was used.
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