用太阳能废热驱动的综合制冷和电力系统的热设计和热带工作流体混合物选择优化
Marwan Kheimi1, Sultan K Salamah2, Hisham A Maddah3
1Department of Civil and Environmental Engineering, Faculty of Engineering-Rabigh Branch, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
Chemosphere
|May 28, 2023
概括
这项研究优化了使用R-11和R245fa混合物的太阳能联合制冷和发电系统 (CCPP). 热otropic混合物提高系统性能,实现8.5%的功率效率提高,成本增加最小.
科学领域:
- 可再生能源系统可再生能源系统
- 热力学是一种热力学.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 对可持续能源解决方案的日益增长的需求推动了对可再生能源整合的研究.
- 化石燃料的限制和环境问题需要高效的联合制冷和发电系统 (CCPP).
- 太阳能为CCPP应用提供了可行的可再生能源.
研究的目的:
- 研究使用有机兰金循环 (ORC) 和排气器制冷循环 (ERC) 的太阳能CCPP系统的性能.
- 评估不同工作流体,特别是R-11,R245fa及其热带混合物的对系统效率和成本的影响.
- 通过最大限度地降低总成本率 (TCR) 和最大限度地提高能量效率来优化CCPP系统.
主要方法:
- 开发了一个CCPP系统模型,集成太阳能平板收集器 (SFPC),ORC和ERC.
- 分析了系统的性能,使用R-11和R245fa作为纯工作流体和各种热带混合物.
- 采用了多目标优化过程,考虑了设计变量,如SFPC数量,HRVG压力和喷射器参数.
主要成果:
- 与纯制冷剂相比,R-11和R245fa的热otropic混合物表现出更高的性能.
- 最佳性能是通过80:20%的R-11到R245fa混合物比率实现的.
- 这种最佳的混合物使得功率效率提高了8.5%,而TCR只增加了1.5%.
结论:
- 使用R-11和R245fa的热otropic混合物是提高太阳能CCPP系统性能的有效策略.
- 优化的CCPP系统为可持续的能源发电和冷却提供了一个有希望的解决方案.
- 对热带混合物优化的进一步研究可以导致可再生能源系统效率的显著提高.
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