- 學位論文
太陽能驅動駐車排熱系統之可行性研究
Feasibility Study of Solar Energy Driven Heat-extraction System to Parking Vehicle
摘要
本研究是建立利用薄膜太陽能板做為電力來源，驅動橫流扇進行熱負載排除的系統，根據熱空氣上升冷空氣下降的原理車輛頂端應是熱空氣集中最多的地方，因此我們將裝置設計在車輛天窗上來對車內排熱。透過不同的實驗，我們可以得到三個重要的結果: (1)將橫流風扇裝於車天窗可將車內溫度從45 oC 降至35 oC，而裝於車門窗的風扇則降至38 oC ，兩者結果相差3 oC ，顯示出散熱點於天窗比於車門窗有更好的效果。(2)車窗些微下拉4cm再配合風扇來排熱之效果可將車內溫度從46 oC於五分鐘降至30 oC ，比車窗皆關閉時所降至36 oC 有著6 oC的差異。(3)實驗環境模擬在嚴苛夏季的氣候條件下，無加裝任何排熱裝置的汽車其車內溫度可上升至65 oC 或是更高，而裝有排熱裝置的汽車可將車內溫度維持在49 oC 一段時間。本研究證明利用橫流風扇將車內的熱往外排出不只可以幫助汽車在開啟空調可於短時間內達到舒適溫度，亦可以減少汽車電力上的消耗。
並列摘要
For this study, thin-film solar panels were used as a power source to drive a cross-flow fan to expel heat and reduce thermal load inside the vehicle. According to the physical principles of hot air rising above cold air , lots of the hot air inside the car cabin are gather at the top of the car,we decide to install the cross flow fan on the sunroof. Through the various experiments,we can get the three important results on this study: (1)Cross –flow fan install on the sunroof can let the car cabin temperature form 45oC to 35 oC, on the car window from 45 oC to 38 oC,the difference between the two results was 3 oC,with the sunroof place showing the better heat rejection effect. (2)Windows 4cm part-down with cross flow fan can let interior temperature from 46oC to 30 oC in 5 minutes,better than windows up with cross flow fan from 46 oC to 36 oC, the difference between the two results was 6 oC (3)Experiment during the modeling strict hot summer environment,the uninstall any heat rejection device on the car can raise the interior temperature to alomost 65 oC or even higher, however, install the heat rejection device can let the interior temperature maintain about 49 oC for a period time. This study demonstrate that using this cross-flow fan to remove heat from the car cabin can not only help cars attain comfortable internal temperatures quickly with opening the air-conditioning, it can also help saving electricity consumption by these cars.