Improving the Performance of Solar Panels by the Use of Phase-Change Materials
Improving the Performance of Solar Panels by the Use of Phase-Change Materials
复制标题
使用相变材料提高太阳能电池板的性能
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
F. Kuznik
中科院分区：
文献类型：
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作者：
P. Biwole;Pierre Eclache;F. Kuznik
高工作温度会导致太阳能光伏和热板的效率损失。本文研究了使用相变材料（PCM）来保持面板的温度接近环境。该研究的主要重点是在一个系统中的热量和质量传递的CFD模型组成的不纯相变材料位于太阳能电池板（SP）的背面。焓法的一个变化允许模拟材料的热物理性质的变化。在Navier-Stokes动量守恒方程中引入浮力项，使得相变材料为固体时速度场不存在。为了验证的目的，等温线和速度场的计算和比较，从实验设置。结果表明，在太阳能电池板的背面添加PCM可以在1000 W/m2的恒定太阳辐射下将电池板的工作温度保持在40°C以下约两小时。
High operating temperatures induce a loss of efficiency in solar photovoltaic and thermal panels. This paper investigates the use of phase-change materials (PCM) to maintain the temperature of the panels close to the ambient. The main focus of the study is the CFD modeling of heat and mass transfers in a system composed of an impure phase change material situated in the back of a solar panel (SP). A variation of the enthalpy method allows simulating the material thermo-physical change of properties. The buoyancy term in Navier-Stokes’ momentum conservation equation is modified through an additional term which forces the velocity field to be non-existent when the PCM is solid. For validation purposes, isotherms and velocity fields are calculated and compared to those from an experimental set-up. Results show that adding a PCM on the back of a solar panel can maintain the panel’s operating temperature under 40°C for around two hours under a constant solar radiation of 1000W/m2.