Statistical analysis of the energy performance of a refrigeration system working with R1234yf using artificial neural networks

Belman-Flores, J.M.; Ledesma, Sergio

doi:10.1016/j.applthermaleng.2015.02.061

Cited by 26 publications

(3 citation statements)

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“…Therefore, it is expected that environmentally friendly halocarbons, hydrocarbons, natural refrigerants (R717, R744) and HFC/ HFO mixtures will be increasingly adopted [228]. Further research should be considered for potential substitutes: for example R1234yf [229] can be a valuable for R134a and has already been investigated for ejector expansion refrigeration system [20, 230-232] and other refrigeration systems [323][324][325][326]. Future studies should also consider refrigerant blends [233].…”

Section: Working Fluidsmentioning

confidence: 99%

Ejector refrigeration: A comprehensive review

Besagni

Mereu

Inzoli

2016

Renewable and Sustainable Energy Reviews

414

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a b s t r a c tThe increasing need for thermal comfort has led to a rapid increase in the use of cooling systems and, consequently, electricity demand for air-conditioning systems in buildings. Heat-driven ejector refrigeration systems appear to be a promising alternative to the traditional compressor-based refrigeration technologies for energy consumption reduction. This paper presents a comprehensive literature review on ejector refrigeration systems and working fluids. It deeply analyzes ejector technology and behavior, refrigerant properties and their influence over ejector performance and all of the ejector refrigeration technologies, with a focus on past, present and future trends. The review is structured in four parts. In the first part, ejector technology is described. In the second part, a detailed description of the refrigerant properties and their influence over ejector performance is presented. In the third part, a review focused on the main jet refrigeration cycles is proposed, and the ejector refrigeration systems are reported and categorized. Finally, an overview over all ejector technologies, the relationship among the working fluids and the ejector performance, with a focus on past, present and future trends, is presented.

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Section: Working Fluidsmentioning

confidence: 99%

Ejector refrigeration: A comprehensive review

Besagni

Mereu

Inzoli

2016

Renewable and Sustainable Energy Reviews

414

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“…Ran and Xu et al [12] were conducted for the first time to evaluate the feasibility of R1234yf in replacing R134a from the perspective of supercritical heat transfer performance. Belman-Flores [13] applied artificial neural network method to analyze the energy performance of refrigeration system with R1234yf.…”

Section: Introductionmentioning

confidence: 99%

Comparative Investigation on the Thermophysical Property and System Performance of R1234yf

Jin

et al. 2023

Energies

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In this paper, an experimental study of R1234yf replacing R22 in window air conditioning was carried out. The optimum types of capillary tubes and the charge amount were obtained, and the system performance of the window air conditioning charged with R1234yf was tested in an air conditioner performance teat facility under nominal and high-temperature conditions. The results revealed that the cooling capacity and coefficient of performance (COP) of the air conditioner charged with R1234yf were 28.5% and 11.1%, respectively, under nominal conditions, which were lower than that of R22. Under high-temperature conditions, the cooling capacity of R1234yf was still lower than that of R22, but the COP was slightly higher. This suggests that R1234yf may be a suitable substitution for R22 in high-temperature environment.

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“…Further to this study, they proposed a new tool that uses ANN to build energy maps for a vapor compression system working with R1234yf. From these maps, it is possible to identify the best performance zones [18]; in a later study, they built 3D plots for visualization of the energy performance and its variability when the input operating parameters change [19]. Cao et al [20] developed an ANN model for an electronic expansion valve using the refrigerant pressures at the inlet and at the outlet, the inlet subcooling and the refrigerant mass flow rate as output.…”

Section: Introductionmentioning

confidence: 99%