通过先进的综合功率和制冷循环提高热力学性能,并采用双重液化天然气冷能利用
Tajwar A Baigh1, Mostofa J Saif1, Ashraf Mustakim1
1Department of Mechanical and Production Engineering (MPE), Islamic University of Technology (IUT), Board Bazar, 1704, Gazipur, Bangladesh.
Heliyon
|August 22, 2024
概括
先进的动力和冷却与液化天然气利用 (ACPLU) 系统通过整合超临界CO2和有机兰金循环来提高能源效率. 优化实现了28.11%的第二规律效率提高和14.16兆瓦的净功率输出.
科学领域:
- 热力学是一种热力学.
- 能源效率 能源效率 能源效率
- 废热回收 废热回收 废热回收
背景情况:
- 综合制冷和电源 (CCP) 系统提高了可持续性,但效率往往很低,特别是在使用液化天然气冷能时,由于温度差异.
- 现有的CCP系统需要优化,以最大限度地提高发电和冷却输出,同时最大限度地减少能源损失.
研究的目的:
- 为提高能源效率,提出和评估使用液化天然气 (LNG) 的先进动力和冷却系统.
- 分析ACPLU系统的第二定律效率,净工作产出和能量破坏.
- 使用灵敏度分析和先进的计算方法优化系统性能.
主要方法:
- 一个级联式的超临界二氧化碳 (TCO2) - LNG循环与有机兰金循环 (ORC) 和吸收制冷系统 (ARS) 的集成.
- 关键操作变量的灵敏度分析,包括温度,压力和点.
- 使用人工神经网络 (ANN) 和遗传算法 (GA) 的多目标优化.
- 热经济分析以评估成本效益.
主要成果:
- 拟议的ACPLU系统在传统的CCP系统中表现出优越的性能,实现了27.3%的第二法效率和11.76兆瓦的净工作输出.
- 作为ORC工作流体的cyclopentane产生了最高的效率 (29.06%) 和净工作产量 (12.27 MW).
- 通过ANN和GA与气进行优化,实现了28.11%的第二规律效率提高和14.16兆瓦的净功率输出.
- 力分析表明,高压比率和最佳的热匹配可以提高性能.
结论:
- ACPLU系统为中温废热回收提供了一个有前途的方法,特别是在制药制造等工业应用中.
- 优化系统设计和工作流体选择对于最大限度地提高能源效率和功率输出至关重要.
- 集成先进的计算优化技术显著提高了系统性能和经济可行性.
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