本論文設計一多孔管水膜鐵捲門冷卻系統，在門牆防火測試的條件下，經由實尺寸實驗，探討無防火時效鐵捲門與多孔管水膜冷卻系統組合之阻熱性能。研究內容包含兩大類實驗：(1)水膜覆蓋於鐵捲門非加熱面之阻熱實驗。(2)水膜覆蓋於鐵捲門加熱面之阻熱實驗。
在非加熱面阻熱實驗方面，首先利用單排孔之多孔管安裝在捲箱內直接噴水於鐵捲門表面形成水膜覆蓋，再經由冷流場測試找出水膜能完整覆蓋鐵捲門表面之最低用水量。接著利用大型門牆耐火加熱爐進行阻熱實驗，實驗結果顯示多孔管水膜系統結合鐵捲門確能提高阻熱性能，門片表面溫度皆控制在100°C左右，完全符合CNS 14803規定之阻熱性能，但此設計方式卻無法壓制捲箱內部的升溫。
在加熱面阻熱實驗方面，為了改善捲箱內部升溫的問題，同樣將多孔管安裝在捲箱內部，但將本來單排孔洞之多孔管設計改成雙排孔洞之多孔管，分別噴水於捲箱面與門片，使得水膜能更完整地覆蓋住整個鐵捲門試體。阻熱實驗結果顯示，雙排多孔管之設計能同時控制門片表面溫度於100°C以下以及壓制捲箱內部升溫，阻熱效果良好。
從以上實驗結果顯示，含水膜鐵捲門可以有效降低鐵捲門之溫度，並能將原先非阻熱型鐵捲門之阻熱性能提升至120分鐘。因此，將多孔管水膜系統安裝於捲箱內部之設計擁有良好阻熱性能提升之能力。另外，不論是非加熱面或是加熱面阻熱實驗，實驗結果皆能達到阻熱性能。換句話說，鐵捲門結合水膜系統只要於單面噴水，不論火源在那一側皆能達到阻熱效果。

In this study, a full-scale fire test was conducted to investigate the fire protection performance of a non-heat-resistant fireproof steel roller shutter with a perforated straight pipe inside the roller box acting as a water film cooling system. The research is divided into two sections, namely, the unexposed surface fire test and the exposed surface fire test.
Before the unexposed fire test, which utilized a perforated pipe with single row of holes, the minimum water flow rate for a water film to completely cover the shutter slat surface was first obtained using the cold test. Then, the fire test was performed with a large-scale door/wall refractory furnace. The results show that the temperature of the shutter slat surface could be controlled to around 100 °C and therefore the setup conformed to the fire performance criterion of CNS 14803. However, this setup could not control the interior temperature rise of the roller box.
In order to solve the problem of the interior temperature rise of the roller box, we further improved the perforated pipe by designing two rows of holes for better water coverage in the exposed surface fire test. The results show that good control of temperature rise on the shutter slat surface and inside the roller box could be achieved.
The experimental results confirm that the water film effectively resists the intensive radiation in a fire and that the heat resistance period could be extended to at least 120 minutes. Therefore, the perforated pipe water film cooling system installed inside the roller box greatly enhanced the heat resistance of the steel roller shutter. Furthermore, no matter which side of the roller shutter is exposed to fire, the results of the two fire tests indicate that a good fire resistance rating can be achieved by forming a water film on just one side.

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