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

来源：

INTERNATIONAL JOURNAL OF EXERGY | 2023年 / 42卷 / 02期

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.

引用

页码：229 / 245

页数：18

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