一种具有双辅助循环的新型超低温级联制冷系统,以提高热性能
Sachin Kumar1, Pardeep Gahlot2, Suresh Kumar3
1Department of Mechanical Engineering, University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, Haryana, India. skmtech11@gmail.com.
Scientific reports
|July 3, 2025
概括
一种新的双辅助级联制冷循环 (CRDAC) 显著提高了能源效率,并减少了超低温应用的环境影响. 与传统方法相比,这种创新系统可节省大量能源,并降低运营成本.
科学领域:
- 热力学是一种热力学.
- 制冷工程 制冷工程 制冷工程
- 可持续能源 可持续能源
背景情况:
- 超低温应用需要高效的制冷周期.
- 传统的级联制冷系统 (CCRS) 在热性能和环境影响方面存在局限性.
- 现有的修改,如带有机械预冷 (CRMP) 的级联制冷系统和带有单个辅助循环 (CRSAC) 的级联制冷系统,提供了部分改进.
研究的目的:
- 为超低温应用提出和评估一种具有双辅助循环 (CRDAC) 的新型级联制冷循环.
- 为了提高热性能,减少能源消耗,并从经济上最大限度地减少碳足迹.
- 为了比较CRDAC与CCRS,CRSAC和CRMP的性能.
主要方法:
- 通过引入双辅助循环 (CRDAC) 来修改传统的级联制冷系统.
- 在不同的蒸发温度 (193-220 K) 和固定冷凝器温度 (318 K) 下,与CCRS,CRSAC和CRMP进行性能分析和比较.
- 评估能源消耗,性能系数 (COP),总等效变暖影响 (TEWI),环境影响指数 (EII) 和运营成本.
主要成果:
- 该CRDAC循环显示出优越的能源效率,消耗的能源比CCRS少24-40%,比CRMP少51-68%,比CRSAC少23-38%.
- 与CRSAC (0.89-1.41),CRMP (0.44-0.64) 和CCRS (0.68-1.1) 相比,CRDAC实现了更高的COP值,从1.245到2.181不等.
- 与其他系统相比,CRDAC的结果是TEWI (40%,62%,32%低) 和EII (13%,25%,33%低) 值明显降低,运营成本降低 (30-60%低).
结论:
- 拟议的CRDAC循环是超低温制冷的高效和经济的解决方案.
- 与现有系统相比,CRDAC在能源效率,环境影响和运营成本方面提供了显著的改进.
- 这种新的方法为实现更可持续和更具成本效益的超低温制冷技术提供了途径.
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