建築騎樓主要可燃物燃燒行為研究-機車燃燒行為研究

張旭富

[中文摘要]

本研究係以全尺寸實體火災試驗，探討機車受火引燃後之燃燒行為。在試驗方面主要分為兩個方向進行，首先以全尺寸燃氣分析儀針對機車各主要可燃部分，分析在燃燒作用下產生之熱釋放率值，以確立燃燒之主導因子。而後探討單體機車在自由空間與騎樓下不同位置受引燃後之燃燒行為，以建立機車火災之基本資料，而量測分析的項目有溫度、輻射及火焰高度等。由試驗結果發現，125c.c塑膠殼機車之座墊與塑膠外殼燃燒所產生的最大熱釋放率峰值分別為619.0kW與1268.0 kW，總發熱量為68.49MJ與210.0MJ，而單輛機車內所有塑膠材料之發熱量約佔機車整體可燃物發熱量的71.2%，為機車燃燒之主要危險因子。可燃物量的多寡對於機車燃燒有著不同程度的影響，推估125c.c鐵殼車產生之熱釋放率約為125c.c塑膠殼機車的4.12%，呼應了125c.c鐵殼車在燃燒試驗中有一較低之溫度分佈結果。單體機車在自由空間中燃燒形成之最大火焰高度為3.8m，推估得到最大熱釋放率為1229.7 kW；變換機車在建築騎樓下之停放位置，得到騎樓下牆邊之機車燃燒形成之溫度分佈及火焰行為，對四周環境有著較大的危害程度。

[英文摘要]

This experiment study discusses the burning behavior of the motorcycle. By using full-scale heat release test, the heatrelease rate of combustible parts of the motorcycle weremeasured first, in order to find out what is the primary factorwhen the motorcycle is burning. Then full-scale fire tests ofone motorcycle in open space and different position of arcade were conducted to gain the basic data of the motorcycle fire.The result shows that the combustibility of plasticpillion and shell of the motorcycle is the main factor in theburning. The heat release rate and temperature profile of  the motorcycle with an iron-shell is much lower than a motorcycle with plastic pillion and shell. The maximum heat release rate of plastic pillion and shell is 619.0kW and 1680.0kW. The heat release rate of the burning motorcycle is estimated from the height of flame. The maximum heat release rate value of one125c.c motorcycle burning in open space is 1229.7kW. The fire of the motorcycle parked beside the front wall that below the arcade is more dangerous to surroundings.