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大型高溫工業熱輻射回收系統建置技術

Development of High Temperature Industrial Radiation Heat Recovery System

摘要


工業輻射廢熱的總量相當龐大,但一直沒有被有效地回收與利用。因此發展非接觸式輻射熱吸收技術來回收製程現場輻射熱,將為工業節能技術創造一個新的應用範疇與成效。許多工業熱輻射強度可達2~20 kW/m^2,大於太陽在正中午時的最大強度1 kW/m^2。而且許多工業製程為全天候運轉、不受天氣影響,因此可以回收的輻射熱量效益大。本研究以國內鋼鐵連鑄廠域為案例,進行工業熱輻射廢熱回收的可行性評估,同時也至工業現場進行取熱驗證。透過與太陽能吸收板製造廠之技術合作,結合工研院綠能所的輻射廢熱回收技術,開發高溫的工業熱輻射吸收板,取熱界面能承受500℃,符合工廠長期運轉的嚴苛條件。同時於產業現場,建置200 kW大型高溫熱輻射回收系統,進行實廠運轉與驗證,成為我國首創大型高溫輻射廢熱回收系統之指標。

並列摘要


The factories released the waste radiation heat during the high temperature operation and without adaptive measures. Actually, the radiation heat can be collected by a thermal absorber coatings and transfer into the high grade thermal energy or electricity without contacting the products during the operation. In the real cases of industrial process, the radiation intensity reached 2 to 20 kW/m^2 which were depended on distance and temperature of heat source. Therefore, the industrial thermal radiation intensity is larger than solar thermal flux as well as few times at most cases. To recover the thermal radiation will benefits the factories and economy. This report analyzed application scenario and the benefits for industrial thermal radiation recovery technology. Furthermore, his report is also to elaborate a demonstration system of 200 kW industrial high temperature radiation heat recovery in the continuous steel casting process. This recovery system is a key demonstration for the further system in Taiwan.

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