| 蒋伟,林潇,刘家豪,汪箭.不同疏密度条件下纸堆燃烧特性研究[J].火灾科学,2016,25(3):127-131. |
| 不同疏密度条件下纸堆燃烧特性研究 |
| Combustion characteristics of paper-tapes with different bulk densities |
| 投稿时间：2016-05-14 修订日期：2016-06-06 |
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| DOI：10.3969/j.issn.1004-5309.2016.03.02 |
| 基金项目:国家自然科学基金（51376172） |
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| 中文关键词: 热释放速率 有效燃烧热值 t平方增长火 纸堆 |
| 英文关键词:Heat release rate Effective heat of combustion t Squared fire growth model Paper-pile |
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| 中文摘要: |
| 利用热释放速率测量平台，开展了纸堆燃烧特性的实验研究。其中纸堆体积为0.45m× 0.45m×0.2m~0.45m×0.45m×0.6m，质量为0.3kg~2.7kg，疏密度为7.4 kg/m3~22.2kg/m3。结果表明，当纸堆的密度变大时，纸堆的有效燃烧热值下降，未燃尽部分增多。在t平方增长火模型中，纸堆也不再总是适用于快速增长火，当纸堆疏密度变大，其火灾强度系数α减小，并拟合了疏密度与火灾强度系数的经验公式。 |
| 英文摘要: |
| In this paper, combustion experiments of paper tapes with different volumes and bulk densities were carried out on a heat release rate measurement platform. The sizes of the paper-tapes are 0.45 m×0.45 m×0.2 m～0.45 m×0.45 m×0.6 m, and weights of paper-tapes are 0.3 kg～2.7 kg. The bulk densities of the paper-tapes are 7.4 kg/m3～22.2kg/m3. It was found that as the bulk density of piles made of shredded paper tapes increased, the effective heat of combustion decreased. In t-squared fire growth model, the parameter α decreases as the bulk density of paper-tapes increases. An empirical formula for the relation between the bulk density and the relevant α is developed. |
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