建築物雙層屋頂整合太陽能空氣集熱器之隔熱與集熱效益研究 ─以鋼板斜屋頂構造為例─

The Study of Heat Insulation and Energy Accumulation Performance on Solar Air Collectors Integrating with Double-layer Roof in Building －A Case of pitched Deck Roof Construction－

童開澤(Kai-Che Tung)

指導教授 ： 周鼎金

國立臺北科技大學/設計學院/建築與都市設計研究所/碩士(2006年)

摘要

台灣地處於亞熱帶熱溼氣候地區，受太陽輻射的影響，建築物水平面屋頂部分之日射量是其他各項立面的2∼3倍，由於建築物屋頂構造設計不良導致夏季室內高溫且悶熱，為了改善此現象本研究運用建築設計手法，改良建築物屋頂構造，使用彩色鋼浪板來施工，並且考慮美觀問題，將建築熱水系統與建築物主體結構作結合，除了有效的利用太陽熱能產生熱水外，並且可降低太陽輻射對室內環境的影響，減少室內的冷房負荷。
研究方法採用戶外足尺模型實驗裝置，來探討建築物雙層屋頂整合太陽能空氣集熱器在隔熱性能與集熱性能之效益。經實驗證明，在隔熱性能部分單層鋼板屋頂之熱傳透率U值為1.48 W/㎡．℃ 遠高於法規要求的1.2 W/㎡．℃，而此系統之U值為0.81 W/㎡．℃，改善幅度為45.27％；在集熱性能部分，當集熱面在上午8：00∼下午4：00之間累積熱射量為4006.86 kcal/m²時，此空氣集熱器可收集到3337.20 kcal之熱水水量。
由於此系統可整合於目前普遍存在的透天厝、新式學校建築、體育館、旅館、工業廠房等建築之屋頂，將可創造出極佳之經濟回收效益，且符合再生能源的開發利用與建築節約能源之意義。

關鍵字

雙層通風屋頂 ； 太陽能 ； 空氣集熱器 ； 屋頂隔熱

並列摘要

Taiwan is in subtropical area with hot and humid climate. Due to sun irradiation, solar radiation on the roof of buildings is two to three fold more compared to the others planes. The poorly-designed roof causes humidity and heat of internal space. In order to improve the design, this research is conducted using architectural method which the whole system is constructed by steal decks. Basically, this system does not change the appearance of the building. Furthermore, it can be used for heating water meanwhile reduces solar radiation which will lead to lower temperature inside the building.
The methodology is to demonstrate the heat insulation and energy accumulation performance of solar air collector that integrated with double-layer roof of buildings. The U value (the coefficient of heat transmission) of single-layer roof is 1.48 W/㎡．℃, on the other hand, the U value of double-layer roof is 0.81 W/㎡．℃. According to the experiment’s result, it evidences that the proposed device actually benefits from heat insulation, by reducing 45.27％ of the U value. In addition, while the solar radiation accumulated by the collector plane between 8:00 to 16:00 is 4006.86 kcal/m². The amount of energy accumulated by solar air collector is 3337.20 kcal which used to heat the water.
The system performed optimum economically by using renewable and saving energy. It has great potential and can be applied to present housing, new campus, gymnasium, hotel buildings and industry factory buildings, etc.

並列關鍵字

double-layer ventilation roof ； solar energy ； Solar Air Collectors ； roof heat insulation

參考文獻

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