在蒸汽压缩制冷系统中使用相变材料进行试验评估,用于冷凝器预冷却
Alireza Riahi1, Mohammad Behshad Shafii1,2
1Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran.
Heliyon
|November 28, 2024
概括
这项研究表明,在蒸汽压缩周期中使用相变材料 (PCM) 储能可显著提高效率. 综合系统提高了每日性能系数 (COP),并降低了能源消耗.
科学领域:
- 热力学是一种热力学.
- 储能系统 储能系统 储能系统
- 制冷周期 制冷周期
背景情况:
- 蒸汽压缩周期在空调 (AC) 中广泛使用,但在高峰能源需求期间面临效率挑战.
- 换相材料 (PCM) 储能为负载转移和性能增强提供了潜在的解决方案.
- 之前的研究往往侧重于孤立的充电或放电阶段,而不是完整的运行周期.
研究的目的:
- 实证地评估一个与PCM能量存储集成的新型蒸汽压缩循环.
- 为了评估整个24小时充放电周期的系统性能.
- 在相同的操作条件下,与PCM和没有PCM的系统效率进行比较.
主要方法:
- 一个300升水基PCM储被整合到蒸汽压缩循环中.
- 该系统在24小时内在常规模式 (没有PCM) 和PCM存储中进行了测试.
- 测量了包括性能系数 (COP),冷却负载和压缩机能耗在内的关键性能指标.
主要成果:
- 在PCM系统下,每日COP增加了约7%,从2.17增加到2.33.
- 每天可用的冷却负载减少了3.7% (58.4到56.2千瓦时).
- 每日压缩机的能耗减少了10.3% (26.9到24.1千瓦时).
结论:
- 将PCM储能集成到蒸汽压缩周期中,可以提高系统的整体性能.
- 24小时的充放电周期显示了能源效率的显著提高和运营成本的降低.
- 这项技术为提高交流效率和管理能源负载提供了可行的策略.
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