基于低度铁矿物质的固体热储能材料的制备和性能
Hui Wang1, Biao Hu1, Jianqiang Li2
1State Key Laboratory of Mesoscience and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China.
Heliyon
|March 8, 2024
概括
新的合理的热能储能材料是使用铁粉石和粘土开发的. 最佳的颗粒大小和1200°C的烧结产生了优越的导热率和能量储存能力.
科学领域:
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 开发具有成本效益和高效的智能热能储能 (STES) 材料对于可再生能源的整合至关重要.
- 低质量的矿物为先进材料开发提供了可持续和丰富的来源.
研究的目的:
- 准备和描述新型的STES材料,使用易于获得的低质量铁.
- 研究颗粒尺寸分布和烧结温度对材料性能的影响.
- 确定最大限度地提高热能储能容量的最佳条件.
主要方法:
- 烧结方法使用铁酸盐矿物粉末,苏州粘土 (烧结辅助剂) 和硫酸盐液体 (粘合剂).
- 粒子大小分布和烧结温度的系统变化.
- 性能评估包括散装密度,导热率,特定热容量,多孔性,吸水性和机械强度.
主要成果:
- 最佳的粒子大小分布 (50:15:35) 导致了最大的散密度 (1.97 g cm−3),热导率 (0.87 W m−1 K−1),和特定热容量 (0.63 kJ kg−1 K−1).
- 在1200°C的烧结下,产生了具有增强导热率 (0.89 W m-1 K-1),散装密度 (2.05 g cm-3) 的材料.
- 优化材料的最大热能储能容量为306.29kWh·m-3在50900°C的温度范围内.
结论:
- 低等级的铁石是生产有效的STES材料的可行原料.
- 颗粒大小分布和烧结温度是优化STES材料性能的关键参数.
- 开发的材料显示了高效的热能储能应用的巨大潜力.
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