热管布局参数对自发燃烧煤的冷却效应的影响
Jiamin Tong1, Yongbo Zhang2, Xuehua Zhao1
1College of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.
Scientific reports
|November 7, 2024
概括
热管 (HPs) 通过改变热传导来优化煤倾倒温度场. 最佳的HP安排显著降低了自燃危险区域和温度,提高了倾倒的稳定性.
科学领域:
- 地质技术工程 地质技术工程
- 热力工程是热力工程中的一个.
- 环境科学 环境科学
背景情况:
- 煤垃圾填埋场由于内部热量积累而存在自发燃烧风险.
- 现有的研究确定了影响倾倒温度领域的热管参数,但最佳安排仍未得到充分研究.
研究的目的:
- 为了研究热管 (HP) 布局对煤垃圾场内的温度场的影响.
- 确定HPs的最佳布置,以减轻自燃风险并改善散热.
主要方法:
- 利用一个理论的热管热传递模型.
- 进行了数值模拟和实验分析,以评估HP布局效应.
- 确定了热管道的最佳插入间距和深度.
主要成果:
- 热管改变了热传导路径,促进了煤垃圾场的及时散热.
- 减少插入距离和增加HP的插入深度可以减少自燃危险区 (SCDZ) 和最大温度 (Tmax).
- HP插入间距对自发燃烧体积的影响大于插入深度.
结论:
- 最佳的HP排列,特别是3米的间距和7米的深度,显著降低了自燃体积和峰值温度.
- 这项研究为设计有效的基于热管的火灾预防工程在煤垃圾场提供了关键数据.
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