用于太阳能热应用的热能储能系统的性能评估
Pranav Mehta1, Vivek Patel2, Sumit Kumar3
1Department of Mechanical Engineering, Dharmsinh Desai University, Nadiad, 387001, Gujarat, India.
Scientific reports
|April 22, 2025
概括
本研究探讨了一种新的热能存储系统 (TESS),用于低温和太阳能热应用,使用相变材料 (PCM). 一个级联的PCM系统显著提高了传热效率,并优化了太阳能储能以实现高效率的使用.
科学领域:
- 材料科学 材料科学 材料科学
- 热力学是一种热力学.
- 可再生能源系统可再生能源系统
背景情况:
- 热能储能系统 (TESS) 对于整合可再生能源至关重要.
- 变相材料 (PCM) 提供高能量存储密度,但需要优化效率.
- 低温和太阳能热应用需要高效和稳定的传热.
研究的目的:
- 为了评估使用三个不同的PCM (,脂肪酸,级联组合) 的新型TESS的性能.
- 在不同的质量流速和传热流体 (HTF) 温度下研究充电和放电特性.
- 分析关键性能指标,包括能源效率,能量效率,传输和传热效率.
主要方法:
- 在240分钟的充/放电周期中对TESS性能进行实验研究.
- 使用,脂肪酸和级联PCM组合进行测试.
- 变化的参数:质量流速 (0.0119公斤/秒,0.00277公斤/秒) 和HTF温度 (75°C,85°C).
主要成果:
- 较高的HTF温度降低了由于增加生成的功率效率.
- 级联PCM系统将传热效率提高了100%,热力学性能提高了30%.
- 实现了分别为85.2%和47.5%的充电和能量效率,在200分钟后在0.0277公斤/秒的0.85液体PCM百分比下达到0.0277公斤/秒.
结论:
- 基于级联PCM的TESS显示了优化太阳能储能的巨大潜力.
- 该系统提供了增强的传热效率,适用于需要持续供热的应用.
- 这些发现支持了先进PCM配置的可行性,以实现高效的热能管理.
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