基于纳米流体的平板太阳能集热器吸收管流动分析:倾斜和孔隙率的影响

IF 2.7 Q3 NANOSCIENCE & NANOTECHNOLOGY Journal of Nanofluids Pub Date : 2023-03-01 DOI:10.1166/jon.2023.1979
R. Panda, L. Panigrahi, M. K. Nayak, A. Chamkha, S. Sahoo, A. Barik
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引用次数: 0

摘要

纳米流体在太阳能收集器中的应用是一个新兴的领域,用于增强热传递,从而为家庭和工业用途带来热增益。在本工作中,研究了具有水CuO基纳米流体的平板太阳能收集器(FPSC)的性能。研究了圆柱形管道倾角和多孔材料孔隙率对该纳米流体基FPSC的影响。采用数值方法模拟了管内的控制方程。相似性变换将模型简化为常微分方程。使用四阶龙格-库塔方法和射击技术对控制的无量纲偏微分方程及其适当的边界条件进行了数值求解。分析了重要和相关的物理参数和感兴趣的物理量的影响。从本研究中可以看出,倾角和曲率参数的增大改善了传热速率,而孔隙率参数的增大有效地控制了传热速率。类似的方法可以用于其他太阳能收集器,通过使用纳米流体代替现有流体来评估传热增强。
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Nanofluid Based Pipe Flow Analysis in Absorber Pipe of Flat Plate Solar Collector: Effects of Inclination and Porosity
Nanofluid applications in solar collectors are an emerging area for enhanced heat transfer resulting in heat gain for domestic and industrial use. In the present work, the performance of a Flat Plate Solar Collector (FPSC) having water-CuO-based nanofluid has been studied. The effect of the tilting angle of cylindrical pipe and porosity of porous material is investigated for this nanofluid-based FPSC. A numerical approach has been adopted to stimulate the governing equations in the tube. The similarity transformation simplifies the model (PDEs) into ordinary differential equations (ODEs). The governing non-dimensional PDEs along with their appropriate boundary conditions are solved numerically using the 4th order Runge-Kutta method cum shooting technique. The impacts of significant and relevant physical parameters and physical quantities of interest are analyzed. From the present study, it is observed that amplification of tilting angle and curvature parameter ameliorates the heat transfer rate while that of porosity parameter controls it effectively. A similar approach can be employed for other solar collectors to assess the heat transfer augmentation by using nanofluids instead of existing fluids.
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来源期刊
Journal of Nanofluids
Journal of Nanofluids NANOSCIENCE & NANOTECHNOLOGY-
自引率
14.60%
发文量
89
期刊介绍: Journal of Nanofluids (JON) is an international multidisciplinary peer-reviewed journal covering a wide range of research topics in the field of nanofluids and fluid science. It is an ideal and unique reference source for scientists and engineers working in this important and emerging research field of science, engineering and technology. The journal publishes full research papers, review articles with author''s photo and short biography, and communications of important new findings encompassing the fundamental and applied research in all aspects of science and engineering of nanofluids and fluid science related developing technologies.
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