| 谢承利,李元洲,任彬彬.配电箱在火灾环境下的热响应特性研究[J].火灾科学,2015,24(2):96-100. |
| 配电箱在火灾环境下的热响应特性研究 |
| Studies on the thermal response of power distribution box in fire situation |
| 投稿时间：2015-01-03 修订日期：2015-03-23 |
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| DOI：10.3969/j.issn.1004-5309.2015.02.06 |
| 基金项目:科技部国家重点实验室基本业务课题支持 |
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| 中文关键词: 低压配电箱 隔热板厚度 火灾场景 热响应 |
| 英文关键词:Low power distribution box Insulation board thickness Fire situation Thermal response |
| 摘要点击次数: 221 |
| 全文下载次数: 359 |
| 中文摘要: |
| 对建筑中广泛使用的低压配电箱在实际火灾条件下的导热过程进行了分析，借鉴现有规范中对排烟风机的耐温要求，估算了配电箱在280℃时需要的隔热板厚度。在一腔室内利用火源功率为700kW的油池火模拟实际火灾环境，对普通配电箱和加隔热板配电箱箱体温升特性进行了研究，分析了火灾环境温度变化对配电箱箱体、内部温度变化的影响规律，验证了配电箱保持连续工作30 min的耐火设计要求。 |
| 英文摘要: |
| The thermal conduction in low power distribution box used in buildings in fire situation is analyzed. In terms of the temperature resistance requirement for exhaust fans in codes, the thickness of the insulation board for the power distribution box in a 280℃ situation is estimated. The temperature resistance tests for power distribution box were conducted in a cabin. The gasoline pool fire with a heat release rate of 700 kW was used as the fire source. The temperature rises on the inner and outside board of box were measured for power distribution box with and without insulation board. The temperature variation on the inner and outside board of box in fire situation is analyzed. The requirement of the insulation board thickness for the power distribution box in a 280℃ situation is verified. |
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