高温有机相变储热材料热特性研究
Research on Thermal Characteristics of High-Temperature Organic Phase Change Thermal Storage Materials
李志东 1韩越 2黄丽蕙 3杨毅 1邵伟涛 1徐涛 4林禧民 2覃福雨2
作者信息
- 1. 广州环投永兴集团股份有限公司,广东 广州 510160
- 2. 广州大学,广东 广州 510006
- 3. 南京市第五高级中学,江苏 南京 210005
- 4. 广州大学,广东 广州 510006;中国农业大学三亚研究院,海南 三亚 572025
- 折叠
摘要
在石油化工等高耗能领域存在大量废余热无法有效利用,相变储热材料(PCMs)能够在相变过程中吸收或释放大量热量,具有高储热密度和良好的温度稳定性等优点,目前是解决工业废余热回收利用问题的有效方法.本文以高温有机共晶相变储热材料为基材(相变温度为186.3℃,相变潜热为261.5 J·g-1),通过添加高导热粒子改善其导热性能,导热系数从0.5037 W·m-1·K-1 提升至0.5912 W·m-1·K-1,并将其应用于移动供热装置进行热量存储,通过在管道内添加翅片结构提升材料热响应性能,加热 1.5 h～2 h即可完成储热过程.相变储热材料在余热利用的应用前景广阔,能有效提高能源利用效率,在热能回收领域有极高实用价值.
Abstract
In high-energy-consuming sectors such as petrochemicals,there is a significant amount of waste heat that cannot be effectively utilized.Phase Change Materials(PCMs)can absorb or release a large amount of heat during phase transitions,offering advantages such as high heat storage density and good temperature stability.Currently,they are an effective method for addressing the problem of industrial waste heat recovery and utilization.This paper focuses on high-temperature organic eutectic phase change materials(with a phase change temperature of 186.3℃and a latent heat of 261.5 J·g-1).By adding high thermal conductivity particles,the thermal conductivity is improved from 0.5037 W·m-1·K⁻¹ to 0.5912 W·m-1·K⁻¹.These materials are applied in mobile heating devices for heat storage.The thermal response performance is enhanced by incorporating fin structures within the pipelines,allowing the heat storage process to be completed in just 1.5 to 2 hours.The application prospects of phase change materials in waste heat utilization are broad,effectively improving energy efficiency and possessing high practical value in the field of thermal energy recovery.
关键词
有机相变材料/储热/热特性/相变温度/热能回收Key words
organic phase change materials/heat storage/thermal properties/phase change temperature/thermal energy recovery引用本文复制引用
出版年
2024
NETL
NSTL
万方数据