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基于纳米流体的光伏热联用装置及其理论分析 预览 被引量:2

A coupled photovoltaic/thermal collector based on nanofluid
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摘要 利用纳米流体对太阳能辐射分频吸收与高效传热的性能,结合太阳能直接吸收(DAC)技术、菲涅尔聚光技术,构建了基于纳米流体的新型聚光太阳能光伏热联用(CPV/T)装置,并建立了装置的物理模型和能量平衡模型。采用计算流体力学方法进行模拟仿真和对比实验,分析了不同流速及流体工质下光伏组件及纳米流体的温度场。研究结果表明:基于纳米流体的CPV/T装置能够充分利用纳米流体辐射分频吸收与高效传热特性,取得对太阳能光伏组件冷却的更好效果,也获得了更高的光热部分流体出口温度;与仅背板冷却的普通光伏热装置相比,流体出口温度有较大幅度的提升,从而提高了光热部分的利用能级。 Nanofluids have novel properties which make them potentially useful in solar applications,including spectral beam splitting of solar irradiation and high efficient heat transfer. Combined with direct absorption collection(DAC) technology and Fresnel light-gathering technology, a new solar concentrated photovoltaic/thermal(CPV/T) equipment based on nanofluid has been proposed. The physical model and the energy balance model of the CPV/T equipment are also established. By using computational fluid dynamics(CFD) method, the temperature distribution of PV modules and nanofluid inside the CPV/T equipment at different flow rates is investigated. The results demonstrated that the CPV/T equipment can take advantage of the characteristics of selective irradiation absorption and high efficient heat transfer of nanofluid. The PV modules can obtain better cooling performance. In addition, the photothermal part can acquire higher outlet temperature. Compared with a normal PV/T equipment with only backplane cooling, the fluid outlet temperature of the proposed equipment can be improved greatly, thus the photothermal utilization level can be promoted.
作者 罗朋 白建波 李华锋 彭俊 张臻 曹飞 章国芳 Luo Peng, Bai Jianbo, Li Huafeng, Peng Jun, Zhang Zhen, Cao Fei, Zhang Guofang (College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213022, China)
出处 《可再生能源》 CAS 北大核心 2016年第5期633-638,共6页 Renewable Energy
基金 江苏省自然科学基金面上项目(BK20141154) 江苏省普通高校研究生科研创新计划项目(KYLX15_0504)
关键词 太阳能利用 纳米流体 光伏热 计算流体力学仿真 solar energy utilization Nanofluid CPV/T CFD
作者简介 白建波(1974-),男,教授,博士,研究方向为太阳能高效综合利用。E-mail:bai_jianbo@hhu.edu.cn
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