Energetic, economic and environmental (3E) analysis of R290, R454C and R465A for drop-in split type air conditioning running on R22

IF 6.4 2区工程技术 Q1 THERMODYNAMICS Case Studies in Thermal Engineering Pub Date : 2025-05-01 Epub Date: 2025-03-13 DOI:10.1016/j.csite.2025.105988

Carlos H.M. Braga , Leonardo V.S. Martins , Juan J.G. Pabon , Luiz Machado , Willian M. Duarte

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Abstract

The present study aims to evaluate the process of drop-in of R22 in split type air conditioning with refrigerant fluids R290, R454C, and R465A. A mathematical model was developed to do an energetic, economic and environmental analysis using different fluids. The mathematical model of the heat exchangers was developed using the moving boundary technique and the compressor was modeled as recommended by the ISO9309 standard. The model was experimentally validated by comparing several results obtained in the laboratory using R22. The average absolute difference between experimental and theoretical results are 3.5%. R465A has cooling capacity 2.5% higher and R290 COP 8.1% higher than R22 in the test condition described by AHRI Standard 210/240. When taking into account cost, efficiency, and environmental effect, R290 is the most suitable replacement for R22 drop-in. R465A is the best option to replace the R22 when taking the cooling capacity results into account.

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在R22上运行的分体式空调R290、R454C和R465A的能量、经济和环境（3E）分析

本研究旨在对R290、R454C、R465A三种制冷剂分体式空调中R22的滴入过程进行评价。建立了一个数学模型，使用不同的流体进行能量、经济和环境分析。采用移动边界技术建立了换热器的数学模型，压缩机按照ISO9309标准进行了建模。通过比较R22在实验室得到的几个结果，对该模型进行了实验验证。实验结果与理论结果的平均绝对差为3.5%。在AHRI标准210/240规定的试验条件下，R465A的制冷量比R22高2.5%，R290的COP比R22高8.1%。综合考虑成本、效率和环境影响，R290是R22插接器最合适的替代品。考虑到制冷量结果，R465A是替代R22的最佳选择。

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来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.