Mathematical modelling and performance analysis of a novel auto-cascade refrigeration cycle for ultra-low temperature applications

IF 1.1 4区工程技术 Q4 ENERGY & FUELS

International Journal of Exergy Pub Date : 2023-01-01 DOI:10.1504/ijex.2023.134611

Ibrahim Karacayli, Lutfiye Altay, Arif Hepbasli

引用次数: 0

Abstract

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°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°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°C.

查看原文本刊更多论文

一种新型超低温自串级制冷循环的数学建模和性能分析

本研究的主要目的是评估采用R290/R170的内部热交换器增强的新型自串级制冷(NACR)循环的能量和运动性能。与蒸发温度为-60℃的ACR循环相比，NACR循环的COP提高了140.78%，火用效率提高了148.67%。压缩机排气温度显著降低13.77%。当蒸发温度为-55℃时，NACR循环的COP为0.403，火用效率为14.61%，压缩机排气温度为126.60℃。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Exergy 物理-能源与燃料

CiteScore

2.10

自引率

15.40%

发文量

107

审稿时长

6 months

期刊介绍： IJEX is dedicated to providing an interdisciplinary platform for information and ideas in the field of exergy and thermodynamic optimisation. It publishes a wide range of original, high-quality research papers, and ancillary features, spanning activities from fundamental research to industrial applications. IJEX covers aspects of exergy analysis of engineering and non-engineering systems and processes in a large variety of disciplines, ranging from mechanical engineering to physics and chemical engineering to industrial ecology. Topics covered include: -Thermodynamic systems -Energy-related applications -Process optimisation -Energy systems, policies, planning -Exergy/environment modelling -Exergetic life cycle assessment -Industrial ecology -Sectoral exergy utilisation -Waste exergy emissions -Second-law efficiency -Thermo- and exergo-economics -Exergy in sustainable development -Criticisms of and problems with use of exergy -Entropy generation minimisation -Constructal theory and design