在環保與安全的考量下，傳統化石能源與核能逐漸受到抵制，再生能源近年來積極發展中。台灣地處亞熱帶、日照充足，太陽能實為最具發展潛力之再生能源，配合政府對安裝太陽能熱水器的補助，近年來民眾已廣泛使用太陽能熱水器。但台灣每年平均約有3.7個颱風侵襲，容易造成太陽能熱水器損壞，因此本研究利用有限元素分析軟體ANSYS 14.0對風力負載下之太陽能板進行結構應力分析。
結果發現風速60 m/s、風向角135度時太陽能板會因局部強烈負壓造成不銹鋼外殼產生極大應力而造成損壞，本研究利用改變不銹鋼外殼與玻璃的厚度以及加裝支架來降低太陽能板之最大應力值以增強耐風性能。不銹鋼外殼厚度增為1.4 mm後，在風速60m/s、風向角135度之負載條件下其最大應力可由降伏強度之100.5%降為45%。玻璃之厚度減少為2.4 mm後在風速80m/s、風向角180度之負載條件下應力值約為66.7%的拉伸強度，安全性還是足夠，因此最佳之厚度配置為不銹鋼外殼1.4 mm、玻璃2.4 mm。市面上有廠商在集熱板下面中間處安裝補強支架，但分析結果發現此安裝方式無法改善太陽能板上之最大應力值，因此本研究將支架位置改為靠近負壓區域，利用最佳化得到最有效改善應力的支架布置方式，在風速60 m/s負載下不銹鋼外殼之最大應力可由降伏強度之100.5%降為63%。

Traditional fossil fuels and nuclear energy gradually be resisted under consideration for eco-awareness and safety, while renewable energy is developed positively in recent years. Since Taiwan is located in subtropical area which has sufficient sunshine, solar energy is indeed the most promising renewable energy. With the subsidy from government for installation of solar water heater systems, solar water heater has been widely used by folks. However, there are about 3.7 typhoons, in average, attack Taiwan every year, they sometimes cause damage to the solar water heater. This study investigates the structural stress response of solar collector under wind loads by finite element analysis software ANSYS 14.0.
The results show that solar collector fails due to the extreme stress of stainless steel shell which is caused by locally extreme negative pressure under loads of 60 m/s wind velocity and 135o wind incidence. It is found that the maximum stress of solar collector can be reduced by installing supports and changing the thicknesses of stainless steel shell and glass. By increasing the thickness of stainless steel shell, the maximum stress can be decreased from 100.5% to 45% of yielding strength under wind velocity 60 m/s and 135o wind incidence. The maximum stress of glass under wind velocity 80 m/s and 180o wind incidence is 66.7% of tensile strength when its thickness is decreased to 2.4 mm, and still within the safety concern. Therefore, the best thicknesses of stainless steel shell and glass are 1.4 mm and 2.4 mm. Some vendors installed supports in the middle of the bottom surface of solar collectors. But after simulation analysis, it is found that installing this support cannot reduce the maximum stress. So the locations of supports is changed to near the negative pressure region, it is found that the best arrangement of supports, by optimization analysis, can decrease the maximum stress of stainless steel shell from 100.5% to 63% of yielding strength.

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