超低温串级制冷系统的新设计与热力学分析

IF 0.9 Q4 THERMODYNAMICS

International Journal of Thermodynamics Pub Date : 2022-01-02 DOI:10.5541/ijot.1017282

H. Tan, A. Erişen

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引用次数: 2

摘要

在这项研究中，设计了一个包括在超低温下运行的气体和蒸汽压缩循环的级联制冷系统。在热力学分析中，使用了高温循环（HTC）中的R744、R404A和R410A制冷剂，以及低温循环（LTC）中的R1150、R170和R23制冷剂。热力学分析使用工程方程求解程序包进行。考虑的输出为：系统性能（COP）、压缩比、质量流量比和HTC叶栅出口温度。结果表明，在不同的LTC冷凝器温度值下，R404A/R23的COP值最高，LTC中R23的压缩比最高，R1150的压缩比最低，HTC中R404A的压缩比最大，R744的压缩比最小，系统性能随着质量流量比的降低而提高。

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Novel Design and Thermodynamic Analyses of Cascade Refrigeration System at Ultra-Low Temperature

In this study, a cascade refrigeration system comprising gas and vapor compression cycles operating at ultra-low temperature was designed. In the thermodynamic analyses, R744, R404A, and R410A refrigerants in the high temperature cycle (HTC), and R1150, R170, and R23 in the low temperature cycle (LTC) were used. Thermodynamic analyses were carried out using the Engineering Equation Solver package program. Outputs considered were: system performance(COP), compression ratio, mass flow ratio and HTC cascade outlet temperature. Results show that, at different LTC condenser temperature values, R404A/R23 has the highest COP value, in the LTC, R23 has the highest compression ratio, while R1150 has the lowest one, in the HTC, R404A has the highest compression ratio, while R744 has the lowest one, the performance of the system increased with the decrease of the mass flow ratio.

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来源期刊

International Journal of Thermodynamics THERMODYNAMICS-

CiteScore

1.50

自引率

12.50%

发文量

期刊介绍： The purpose and scope of the International Journal of Thermodynamics is · to provide a forum for the publication of original theoretical and applied work in the field of thermodynamics as it relates to systems, states, processes, and both non-equilibrium and equilibrium phenomena at all temporal and spatial scales. · to provide a multidisciplinary and international platform for the dissemination to academia and industry of both scientific and engineering contributions, which touch upon a broad class of disciplines that are foundationally linked to thermodynamics and the methods and analyses derived there from. · to assess how both the first and particularly the second laws of thermodynamics touch upon these disciplines. · to highlight innovative & pioneer research in the field of thermodynamics in the following subjects (but not limited to the following, novel research in new areas are strongly suggested): o Entropy in thermodynamics and information theory. o Thermodynamics in process intensification. o Biothermodynamics (topics such as self-organization far from equilibrium etc.) o Thermodynamics of nonadditive systems. o Nonequilibrium thermal complex systems. o Sustainable design and thermodynamics. o Engineering thermodynamics. o Energy.