填埋场底部有水循环管情况下温度变化分析
Analysis of temperature changes under the condition of water circulation pipes at the bottom of landfills
张亦凡 1雷浩 2吴珣3
作者信息
- 1. 山东省建筑设计研究院有限公司,山东济南 250001
- 2. 湖北文理学院理工学院,湖北襄阳 441025
- 3. 河海大学,江苏南京 210024;安徽省通源环境节能股份有限公司,安徽合肥 230022
- 折叠
摘要
为了减少填埋场中温度升高对衬垫系统的危害,对填埋场底部有水循环管情况下衬垫层温度变化进行研究.针对水循环系统建立了热传导数学模型,并求得了解析解,通过与Comsol的对比,验证了模型及其解答的正确性.根据解析解分析了不同情况下水循环系统对垃圾填埋场衬垫系统温度的影响情况.研究表明,循环水温度和热交换系数对水循环管的降温性能有较大的影响,水循环管对上下层周围土体的温度也有影响,影响范围为4 m左右.
Abstract
In order to reduce the harm of temperature increase in landfills on the liner system,the temperature changes under the condi-tion of water circulation pipes at the bottom of the landfills were studied.A heat conduction mathematical model was established for the water circulation system,and an analytical solution was obtained.The correctness of the model and its solution was verified through com-parison with Comsol.Based on the analytical solution,the influence of the water circulation system on the temperature of the landfills liner system under different conditions was analyzed.Research shows,the temperature of the circulating water and heat transfer coeffi-cients have a significant impact on the cooling performance of the water circulation pipes;he water circulation pipes also affect the tem-perature of the surrounding soil above and below,with an influence range of about 4 m.
关键词
填埋场/温度/水循环管/热传导模型/衬垫系统Key words
landfill/temperature/water circulation pipe/heat conduction model/liner system引用本文复制引用
基金项目
国家自然科学基金资助项目(42002288)
国家重点研发计划(2023YFC3707905)
出版年
2024
NETL
NSTL
万方数据