论文标题
纳米流体填充的外壳：潜在的光热能量转换和明智的热存储设备
Nanofluid Filled Enclosures: Potential Photo-thermal Energy Conversion and Sensible Heat Storage Devices
论文作者
论文摘要
在目前的工作中，我们提出了“纳米流体填充的外壳”作为潜在的光热能量转换和明智的热存储设备。在此，纳米流体的光充电已被建模为“太阳辐射能 - 纳米颗粒”相互作用。随后的能量再分配已被建模为涉及质量，动量和能量运输的耦合转运现象。特别是，已经分析了具有绝热的纳米流体填充的围墙，并且已经分析了等温边界（通过对流）边界，分别破译了明智的热量存储和热放电能力的基本限制。此外，纳米颗粒体积分数对光热能量转化机制及其重新分布的影响已得到严格研究。详细的分析表明，在相似的工作条件下，在体积吸收模式（即，在低纳米颗粒的体积分数）中，纳米流体填充的外壳具有更高的明智的热量存储（7％ - 27％）和热放电（16％-47％）的能力（16％-47％）的能力（即相应的表面吸收模式（即在高Nananopticles sipersy sipers sipter sipter sipers sipers sipersys sipers siptial）中。总体而言，可以部署“纳米流体填充外壳”，特别是在体积吸收模式下，以进行有效的太阳能热转化和存储。
In the present work we propose "nanofluid filled enclosures" as potential photo-thermal energy conversion and sensible heat storage devices. Herein, the optical charging of the nanofluid has been modeled as "solar radiant energy - nanoparticles" interaction. The subsequent energy redistribution has been modeled as coupled transport phenomena involving mass, momentum and energy transport. In particular, nanofluid filled enclosure with adiabatic, and isothermal (through convective) boundaries have been analyzed to decipher the fundamental limits of sensible heat storage and thermal discharging capacities respectively. Furthermore, the effect of nanoparticles volume fraction on the photo-thermal energy conversion mechanisms and its redistribution thereof has been critically investigated. Detailed analysis reveals that under similar operating conditions, in volumetric absorption mode (i.e., at low nanoparticles volume fraction) nanofluid filled enclosure has higher sensible heat storage (7% - 27% higher) and thermal discharging (16% - 47% higher) capacities than in the corresponding surface absorption mode (i.e., at high nanoparticles volume fraction). Overall, "nanofluid filled enclosures", particularly in volumetric absorption mode, could be deployed for efficient solar thermal conversion and storage.
