Performance Evaluation of R1224yd as Alternative to R123 and R245fa for Vapor Compression Heat Pump System

IF 0.9 Q4 THERMODYNAMICS

International Journal of Thermodynamics Pub Date : 2024-01-15 DOI:10.5541/ijot.1310329

Nyayu Aisyah, H. M. Ariyadi

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引用次数: 0

Abstract

The search for environmentally friendly refrigerants for vapor compression systems has been a significant focus recently due to environmental concerns such as ozone depletion and global warming. In this study, the potential of R1224yd as an alternative refrigerant is investigated. A thermodynamic analysis of a 4-kW air conditioning system is conducted to assess the performance of R1224yd. The system is analyzed from a thermodynamic perspective, and key performance indicators such as the Coefficient of Performance and exergy efficiency. The results are then compared to R245fa and R123. Furthermore, a parametric study is performed to examine the impact of key parameters, such as evaporating and condensing temperatures, on the system's performance. This analysis provides insights into the sensitivity of the system's performance to variations in these parameters. The results indicate that R1224yd is a promising candidate as an environmentally friendly alternative refrigerant compared to R123 and R245fa. Because R1224yd has the lowest environmental impact. It has about 700 kg CO2 indirect emission, but about zero kgCO2 for direct emission. While, based on the thermodynamic results, R1224yd offers better performance compared to R245fa which has 1-3% higher in performance value and exergy efficiency, and has comparable performance to R123. This suggests that R1224yd can be a viable option for the systems, providing improved energy efficiency and lower environmental impact.

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R1224yd 替代 R123 和 R245fa 用于蒸汽压缩热泵系统的性能评估

由于臭氧消耗和全球变暖等环境问题，为蒸汽压缩系统寻找环境友好型制冷剂成为近期的一个重要焦点。本研究调查了 R1224yd 作为替代制冷剂的潜力。对一个 4 千瓦的空调系统进行了热力学分析，以评估 R1224yd 的性能。从热力学角度分析了该系统，以及性能系数和放能效率等关键性能指标。然后将结果与 R245fa 和 R123 进行比较。此外，还进行了参数研究，以考察蒸发和冷凝温度等关键参数对系统性能的影响。这项分析有助于深入了解系统性能对这些参数变化的敏感性。结果表明，与 R123 和 R245fa 相比，R1224yd 是一种很有前途的环保型替代制冷剂。因为 R1224yd 对环境的影响最小。它的间接排放量约为 700 千克二氧化碳，而直接排放量约为零千克二氧化碳。而根据热力学结果，R1224yd 的性能比 R245fa 更好，后者的性能值和能效比 R245fa 高 1-3%，性能与 R123 相当。这表明，R1224yd 是一种可行的系统选择，可以提高能源效率，降低对环境的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.