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Mathematical modelling and performance analysis of a novel auto-cascade refrigeration cycle for ultra-low temperature applications
被引:2
|作者:
Karacayli, Ibrahim
[1
]
Altay, Lutfiye
[2
]
Hepbasli, Arif
[3
]
机构:
[1] Ege Univ, Grad Sch Nat & Appl Sci, TR-35100 Bornova, Izmir, Turkiye
[2] Ege Univ, Fac Engn, Dept Mech Engn, TR-35100 Bornova, Izmir, Turkiye
[3] Yasar Univ, Fac Engn, Dept Energy Syst Engn, TR-35100 Bornova, Izmir, Turkiye
关键词:
ultra-low temperature;
refrigeration;
auto-cascade refrigeration;
ACR;
exergy analysis;
coefficient of performance;
COP;
second law efficiency;
EXERGY;
D O I:
10.1504/IJEX.2023.134611
中图分类号:
O414.1 [热力学];
学科分类号:
摘要:
The main objective of this study is to assess both energetically and exergetically the performance of a novel auto-cascade refrigeration (NACR) cycle enhanced by an internal heat exchanger using R290/R170. In contrast to the ACR cycle with a -60 degrees C evaporation temperature, the NACR cycle displays a COP increase of 140.78% and a 148.67% improvement in exergy efficiency. Additionally, there is a notable decrease of 13.77% in compressor discharge temperature. For an evaporation temperature of -55 degrees C, the NACR cycle achieves a COP of 0.403 and an exergy efficiency of 14.61%, with the compressor discharge temperature registering at 126.60 degrees C.
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页码:229 / 245
页数:18
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