Design and optimization study of a densely packed ultrahigh concentration photovoltaic thermal array for desalination usability,International Journal of Energy Research

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Design and optimization study of a densely packed ultrahigh concentration photovoltaic thermal array for desalination usability
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2021-09-20 , DOI: 10.1002/er.7285
Gaeet AlFalah ₁ , Taher S. Maatallah ₁ , Ahmad Okasha ₁ , Fahd Ghallab Al‐Amri ₁

Affiliation

The cogenerated energy from the densely packed ultrahigh concentration photovoltaic thermal systems (UHCPV/T) can not only promote higher exergetic efficiency but also enable the usability of the collected thermal energy for potential desalination purposes. In the present study, three finned heat sink designs of UHCPV/T have been proposed toward maximum collected thermal power and minimum required pumping power. A conjugate heat transfer model has been developed and validated to simulate the different designs under various operating conditions. The cooling setups are based on copper millimeter-scale finned heat sinks immersed in fully developed laminar flow in a rectangular microchannel. It was found that the configuration from the more efficient heat sink design to the poorest thermal one is the rectangular fins (RFs), elliptical fins (EFs), diamond pin-fins (DPFs), and then traditional round pin-fins (TRPFs) heat sink. The RF heat sink has demonstrated the best thermal performance with a maximum multi-junction solar cell (MJSC) temperature of 81.4°C and water temperature increase of 14.21°C under ×1200 and water inlet velocity of 0.02 m/s. Despite the RF heat sink has recorded the highest values of pressure drop and required pumping power equal to 78.74 Pa and 570.7 mW, respectively, it was selected as the optimal heat sink design, ensuring the highest net electrical output power and thermal collected power.

中文翻译：

用于海水淡化可用性的密集封装超高浓度光伏热阵列的设计与优化研究

来自密集封装的超高浓度光伏热系统 (UHCPV/T) 的热电联产不仅可以提高火用效率，而且还可以使收集的热能用于潜在的脱盐目的。在本研究中，针对最大收集热功率和最小所需泵浦功率提出了三种 UHCPV/T 翅片式散热器设计。已开发并验证了共轭传热模型，以模拟各种操作条件下的不同设计。冷却装置基于浸没在矩形微通道中充分发展的层流中的铜毫米级翅片散热器。发现从更高效的散热器设计到最差散热设计的配置是矩形翅片 (RF)、椭圆翅片 (EF)、金刚石针鳍 (DPF)，然后是传统的圆形针鳍 (TRPF) 散热器。RF散热器表现出最佳的热性能，最高多结太阳能电池（MJSC）温度为81.4°C，在×1200下水温升高14.21°C，进水速度为0.02 m/s。尽管 RF 散热器记录了最高的压降值和所需的泵浦功率，分别等于 78.74 Pa 和 570.7 mW，但它被选为最佳散热器设计，确保最高的净电输出功率和热收集功率。×1200 下 21°C，进水速度 0.02 m/s。尽管 RF 散热器记录了最高的压降值和所需的泵浦功率，分别等于 78.74 Pa 和 570.7 mW，但它被选为最佳散热器设计，确保最高的净电输出功率和热收集功率。×1200 下 21°C，进水速度 0.02 m/s。尽管 RF 散热器记录了最高的压降值和所需的泵浦功率，分别等于 78.74 Pa 和 570.7 mW，但它被选为最佳散热器设计，确保最高的净电输出功率和热收集功率。

更新日期：2021-09-20

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