用离子流体-油填充板式换热器的性能指数的数据分析:平行与反流相对应
Ishrat Zahan1, Rehena Nasrin2, Nusrat Jahan Jakia1
1Department of Mathematics, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh.
Scientific reports
|February 7, 2025
概括
这项研究使用基于石墨烯的离子流体提高了换热器的性能. 与平行流相比,反流配置显示出更高的热效率和均的温度分布.
科学领域:
- 工程 工程师 工程师 工程师
- 材料科学 材料科学 材料科学
- 热力学是一种热力学.
背景情况:
- 板式热交换器 (PHEs) 对于现代能源和工业应用至关重要.
- 在PHE的创新提高能源效率和减少对环境的影响.
- 离子纳米流体比传统流体提供更高的导热率和传热系数.
研究的目的:
- 为了研究使用新型离子流体的三室PHE的性能.
- 确定最佳配置 (逆流与平行流) 以最大限度地提高性能指数和能源效率.
- 分析雷诺兹数和纳米粒子度对传热的影响.
主要方法:
- 使用有限元法进行数值模拟,以解决纳维埃-斯托克斯方程和能量平衡方程.
- 在三室PHE中使用基于石墨烯的离子流体 (石墨烯/[C2mim][SCN]) .
- 采用响应表面方法,包括ANOVA和灵敏度分析,进行全面的数据分析.
主要成果:
- 反流配置实现了76.23%的热增强,在Re=1.1时超过了平行流 (70.07%) 的性能.
- 最佳性能指数 (η) 在Re=1和φ=0.025发现,达到34000以上.
- 反流显示出更高的传热效率和更均的温度分布.
结论:
- 对于使用离子纳米流体的PHEs,逆流配置更有效.
- 离子纳米流体显著增强PHEs的热传递,提供实用的设计优化见解.
- 该研究验证了高R2值的开发响应函数的有效性.
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