دورية أكاديمية
Limiting Performance of the Ejector Refrigeration Cycle with Pure Working Fluids
| العنوان: | Limiting Performance of the Ejector Refrigeration Cycle with Pure Working Fluids |
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| المؤلفون: | Jiawei Fu, Zhenhua Liu, Xingyang Yang, Sumin Jin, Jilei Ye |
| المصدر: | Entropy, Vol 25, Iss 2, p 223 (2023) |
| بيانات النشر: | MDPI AG, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Science LCC:Astrophysics LCC:Physics |
| مصطلحات موضوعية: | ejector refrigeration cycle, working fluids, fluid thermophysical property, thermodynamics, Science, Astrophysics, QB460-466, Physics, QC1-999 |
| الوصف: | An ejector refrigeration system is a promising heat-driven refrigeration technology for energy consumption. The ideal cycle of an ejector refrigeration cycle (ERC) is a compound cycle with an inverse Carnot cycle driven by a Carnot cycle. The coefficient of performance (COP) of this ideal cycle represents the theoretical upper bound of ERC, and it does not contain any information about the properties of working fluids, which is a key cause of the large energy efficiency gap between the actual cycle and the ideal cycle. In this paper, the limiting COP and thermodynamics perfection of subcritical ERC is derived to evaluate the ERC efficiency limit under the constraint of pure working fluids. 15 pure fluids are employed to demonstrate the effects of working fluids on limiting COP and limiting thermodynamics perfection. The limiting COP is expressed as the function of the working fluid thermophysical parameters and the operating temperatures. The thermophysical parameters are the specific entropy increase in the generating process and the slope of the saturated liquid, and the limiting COP increases with these two parameters. The result shows R152a, R141b, and R123 have the best performance, and the limiting thermodynamic perfections at the referenced state are 86.8%, 84.90%, and 83.67%, respectively. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1099-4300 |
| Relation: | https://www.mdpi.com/1099-4300/25/2/223; https://doaj.org/toc/1099-4300 |
| DOI: | 10.3390/e25020223 |
| URL الوصول: | https://doaj.org/article/9590c376a30346a9ae5e7b8a0a4d145e |
| رقم الأكسشن: | edsdoj.9590c376a30346a9ae5e7b8a0a4d145e |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 10994300 |
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| DOI: | 10.3390/e25020223 |