基于废热回收的新型绿色三级热联热循环的成本和环境分析和优化:一项比较研究
Hima Nikafshan Rad1,2, Amir Ghasemi3,2, Mohammad Marefati4
1School of Information and Communication Technology, Griffith University, Nathan, QLD, Australia.
Heliyon
|April 11, 2024
概括
本研究介绍了一种新型的热联发电和冷却负载循环 (CPCC),有效利用工业废热. 该CPCC显著提高了运动性能,降低了成本和环境影响,R1234/yf被确定为最佳制冷剂.
科学领域:
- 热力学和能源系统工程 热力学和能源系统工程
- 废热回收技术的使用
- 可持续能源解决方案 可持续能源解决方案
背景情况:
- 工业过程和化石燃料工厂产生大量的废热,导致热力学效率低下和环境问题.
- 有效利用废热对于提高能源效率和减少热发电的生态足迹至关重要.
- 现有的系统通常采用单层热回收,限制了整体性能和环境效益.
研究的目的:
- 开发和评估一种新的多层废热回收系统:热联发电和冷却负载循环 (CPCC).
- 通过双目标优化方法,优化CPCC以最大限度地降低总成本和最大限度地提高功率效率.
- 通过使用各种制冷剂,比较CPCC的性能与参考系统,并评估其对环境的影响.
主要方法:
- 实施三级废热回收工艺,整合有机兰金循环 (ORC) 和基于喷射的制冷工艺.
- 对拟议的CPCC进行了全面的热力学,成本和环境评估.
- 双目标优化,以平衡经济可行性和能源效率,并使用参考系统进行比较分析.
主要成果:
- 与参考系统相比,CPCC在运动表现上显示出10.3%的改善.
- 施加破坏和年度总成本分别减少了约7.4%和21.6%.
- 在制冷过程中使用喷射器导致环境影响显著减少,估计减少了11640的二氧化碳.
结论:
- 与传统系统相比,新型CPCC提供了优越的热力学性能,成本效益和环境效益.
- 制冷剂R1234/yf被认为是优化CPCC性能和环境属性的最合适选择.
- 多层废热回收,特别是使用喷射器技术,是减轻工业废热排放对环境的影响的高效策略.
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