分析太陽能板於不同鰭片外形下之散熱影響

The Study of Different Fin Shapes in Photovoltaic Panels Cooling

李宇平(Yu-Ping Li)

指導教授 ： 李世鳴

淡江大學/工學院/航空太空工程學系碩士班/碩士(2020年)

https://doi.org/10.6846/TKU.2020.00219

摘要

本研究目的是透過不同角度鰭片與挖孔後鰭片的結構，藉此達到改善太陽能板熱管理系統之散熱影響。利用商用軟體CATIA繪製散熱器結構，再將模型導入FLUENT做計算，最後將結果匯入Tecplot進行分析及討論。吾人固定太陽能板所接受的熱源，給定固定風量大小，以k-epsilon RNG 和 k-omega standard 兩種紊流模型進行模擬。模擬結果分析顯示，伴隨鰭片高度的遞增，不利於45度角和135度角鰭片的散熱，鰭片夾角處易形成低壓迴流區，熱不易散去。挖孔後的鰭片能有效打散原本鰭片間距之低壓迴流區，幫助此區域之流速加快；而以分形後鰭片孔洞，為保持原散熱面積大小，並未達到比分形前更好的結果，但仍比無孔洞鰭片之散熱效果佳。

關鍵字

太陽能板 ； 鰭片 ； 分形結構 ； 熱傳 ； 計算流體力學

並列摘要

The purpose of this research is to improve the heat dissipation effect of the solar panel thermal management system through the structure of the different angle fins and the fins after digging holes. Use commercial software CATIA to draw the ra-diator structure, then import the model into FLUENT for calculation, and finally import the result into Tecplot for analysis and discussion. We fix the heat source received by the solar panel, and given a fixed air velocity, we simulate it with two turbulence models, k-epsilon RNG and k-omega standard. The analysis of the simulation results shows that with the increase in the height of the fins, it is not conducive to the heat dissipation of the 45-degree and 135-degree fins. A low-pressure recirculation zone is easily formed at the angles of the fins, and the heat is not easily dissipated. The fins after digging can effectively wreck the low-pressure recirculation zone of the original fin spacing to help speed up the flow rate in this area; and the fin holes after fractal are used to maintain the original heat dissipation area, which is not better than before fractal ,but it is still better than non-porous fins for heat dissipation.

並列關鍵字

Photovoltaic Panel ； Fin ； Fractal ； Heat Transfer ； Numerical Simulation

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