气溶胶灭火剂冷却过滤层研究

Cooling and filter layer of aerosol fire extinguishing agent

采用多孔陶瓷作为载体承载冷却剂碳酸氢钠和碳酸氢钾,以此组成冷却过滤层。并通过实验对冷却过滤层进行研究。利用热像仪表征灭火器装置的出口温度。分析了冷却物质的降温效能,并介绍了过滤层蓄热过程的传热数学模型。结果显示,这种方法可以很好地降低气溶胶灭火剂的出口温度;相同体积的冷却过滤层,采用碳酸氢钾作为冷却剂的降温效果要明显好于碳酸氢钠。

The cooling and filter layer was constituted by porous ceramics with coolants sodium bicarbonate and potassium bicarbonate,and was studied by experiment.Infrared thermography was used to characterize the temperature at the outlet of the aerosol fire extinguishing apparatus.The cooling performance of the coolant was analyzed,and the heat transfer model of the regenerative process was introduced.The results showed that the method can goodly decrease the temperature of aerosol;potassium bicarbonate shows a better cooling effect than sodium bicarbonate.