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Water/MWCNT nanofluid based cooling system of PVT: Experimental and numerical research
Renewable Energy ( IF 8.7 ) Pub Date : 2018-06-01 , DOI: 10.1016/j.renene.2018.01.014 R. Nasrin , N.A. Rahim , H. Fayaz , M. Hasanuzzaman
Renewable Energy ( IF 8.7 ) Pub Date : 2018-06-01 , DOI: 10.1016/j.renene.2018.01.014 R. Nasrin , N.A. Rahim , H. Fayaz , M. Hasanuzzaman
Abstract In this research, an indoor experiment has been carried out of a PV module under controlled operating conditions and parameters. A novel design of thermal collector has been introduced, a complete PVT system assembled and water/MWCNT nanofluid used to enhance the thermal performance of PVT. An active cooling for PVT system has been maintained by using a centrifugal pump and a radiator have been used in the cycle to dissipate the heat of nanofluid in the environment to maintain proposed inlet temperature. 3D numerical simulation has been conducted with FEM based software COMSOL Multiphysics and validated by an indoor experimental research at different irradiation level from 200 to 1000 W/m2, weight fraction from 0 to 1% while keeping mass flow rate 0.5 L/min and inlet temperature 32 °C. The numerical results show a positive response to the experimental measurements. In experimental case, percentage of enhanced PV performance is found as 9.2% by using water cooling system. Higher thermal performance is obtained as approximately 4 and 3.67% in numerical and experimental studies, respectively by using nanofluid than water. In the PVT system operated by nanofluid at 1000 W/m2 irradiation, the numerical and experimental overall efficiency are found to be 89.2 and 87.65% respectively.
中文翻译:
基于水/多壁碳纳米管纳米流体的 PVT 冷却系统:实验和数值研究
摘要 在这项研究中,在受控的运行条件和参数下对光伏组件进行了室内实验。引入了一种新型集热器设计,组装了完整的 PVT 系统,并使用水/MWCNT 纳米流体来提高 PVT 的热性能。PVT 系统通过使用离心泵保持主动冷却,并在循环中使用散热器来消散环境中纳米流体的热量,以保持建议的入口温度。已使用基于 FEM 的软件 COMSOL Multiphysics 进行 3D 数值模拟,并通过室内实验研究在 200 到 1000 W/m2、重量分数从 0 到 1% 的不同辐照水平下进行验证,同时保持质量流速为 0.5 L/min 和入口温度32℃。数值结果显示了对实验测量的积极响应。在实验案例中,发现通过使用水冷系统提高光伏性能的百分比为 9.2%。在数值和实验研究中,通过使用纳米流体比水获得更高的热性能,分别约为 4% 和 3.67%。在由纳米流体在 1000 W/m2 辐照下操作的 PVT 系统中,数值和实验总效率分别为 89.2% 和 87.65%。
更新日期:2018-06-01
中文翻译:
基于水/多壁碳纳米管纳米流体的 PVT 冷却系统:实验和数值研究
摘要 在这项研究中,在受控的运行条件和参数下对光伏组件进行了室内实验。引入了一种新型集热器设计,组装了完整的 PVT 系统,并使用水/MWCNT 纳米流体来提高 PVT 的热性能。PVT 系统通过使用离心泵保持主动冷却,并在循环中使用散热器来消散环境中纳米流体的热量,以保持建议的入口温度。已使用基于 FEM 的软件 COMSOL Multiphysics 进行 3D 数值模拟,并通过室内实验研究在 200 到 1000 W/m2、重量分数从 0 到 1% 的不同辐照水平下进行验证,同时保持质量流速为 0.5 L/min 和入口温度32℃。数值结果显示了对实验测量的积极响应。在实验案例中,发现通过使用水冷系统提高光伏性能的百分比为 9.2%。在数值和实验研究中,通过使用纳米流体比水获得更高的热性能,分别约为 4% 和 3.67%。在由纳米流体在 1000 W/m2 辐照下操作的 PVT 系统中,数值和实验总效率分别为 89.2% 和 87.65%。