本論文提出一新式的迴路式熱管，包含了一個大小為82mm(L) ╳ 42mm(W) ╳ 10mm(H)平板蒸發器，兩獨立的液汽相流道之雙迴圈系統創新設計，可提供較高的蒸汽流量，降低至補償室的熱洩漏。 實驗利用鳍片搭配風扇以強制空冷的方式冷卻，並採甲醇為工作流體，充填率分別為20%、30%、40%、50%等四種。加熱面積為31mm ╳ 31mm，加熱功率範圍為20W~ 60W間。溫度的量測包含了熱源溫度、環境溫度與液汽相流道之末端溫度。結果顯示，充填率為40%，加熱功率為60W有最佳熱阻值為0.83 K/W，熱源溫度約為80℃。 關鍵字：迴路式熱管、雙迴圈、強制空冷 This paper presented an preliminary study on a copper- methanol based Loop Heat Pipes(LHP) with a 82 mm long, 42mm wide and 10 mm thick flat rectangular evaporator. A novel concept to have dual vapor lines and liquid lines loops design from evaporator to condenser was devised to achieve higher vapor flow rate and reduce the heat leakage to compensation chamber. Thermal performance of loop heat pipe was evaluated experimentally in a fan-heat sink CPU test apparatus with heating area of 31mm x 31mm. After the evaluation, the LHP with 40% filling rate showed the lowest evaporator-to-ambient resistance of 0.83 K/W , corresponding to a heater temperature of 80 ℃ at an input power of 60 watts.
