實驗透過自行設計之可視化平板熱管對蒸發區進行可視化之觀察與量測，探討毛細結構與蒸發熱阻之關係以及絕熱段溫度對毛細結構之影響。在厚度0.4mm以及1mm兩種燒結銅網毛細結構下，實驗過程中均無任何沸騰的現象發生，其原因推測為過熱度不足而無法引起沸騰現象。本實驗並將蒸發區局部採用燒結銅粉而其餘部分為燒結銅網之毛細結構進行觀測，發現其蒸發熱阻與燒結銅網之毛細結構低，其原因推測為燒結銅粉之等效熱傳導係數較佳，此外，雖然燒結銅粉之成核址較多，在實驗過程中依然未有沸騰現象產生。蒸發熱阻值先隨加熱量增加而減小，但達最小值後會因蒸發區內形成局部乾化而上升。具最小蒸發熱阻值的加熱量與注水量及毛細厚度有關。
本研究透過調整冷卻水溫的方式探討絕熱段溫度對蒸發熱阻之影響，並發現在較高的絕熱段溫度下操作，其蒸發熱阻的確會有降低的現象，且透過可視化的觀察發現在相同加熱量但絕熱段溫度較高下，蒸發區毛細結構表面之液膜會較薄，其原因推估可能是絕熱段溫度提高後，熱管內部之溫度亦同步升高導致表面張力下降，故毛細力也隨之下降。但詳細原因尚待深入探討。

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