Condensation heat transfer characteristics of R1234yf inside multiport mini-channel tube

Vu, Pham Quang; Oh, Jong-Taek

doi:10.1016/j.ijheatmasstransfer.2021.121029

Cited by 16 publications

(3 citation statements)

References 32 publications

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“…The molecular formula of R1234yf is CF 3 CFCH 2 , its ODP is zero, its GWP is 4, and its atmospheric lifetime is 11 days. It has excellent environmental friendliness. , More and more cars are starting to use R1234yf in AC systems. Compared with R134a, the theoretical cycle performance of the two is very close, and the operating pressure is almost the same.…”

Section: Current Status and Research Progress Of Refrigerantsmentioning

confidence: 99%

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Application of Refrigerant Cooling in a Battery Thermal Management System under High Temperature Conditions: A Review

Kang,

Hu,

Zhang

et al. 2024

ACS Omega

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Battery thermal management (BTM) is crucial for the lifespan and safety of batteries. Refrigerant cooling is a novel cooling technique that is being used gradually. As the core fluid of refrigerant cooling, refrigerants need to possess excellent properties while meeting environmental requirements. This paper elucidates the current state of refrigerants (single refrigerants and mixed refrigerants), synchronously summarizing them from the perspectives of refrigerant properties and refrigerant cooling (immersion and cold plate indirect). It outlines the advantages and disadvantages of single and mixed refrigerants as well as the research and development in the vehicle thermal management system (TMS). The choice of refrigerant directly affects cooling performance, and research on vehicle air conditioning (AC) systems can indirectly guide the BTM. R1234yf and R152a can directly replace R134a, while although R744 has a strong heating capacity, it cannot directly replace R134a. Specific mixed refrigerants reduce the global warming potential (GWP) and flammability issues, thereby improving system efficiency. Additionally, immersion cooling controls the temperature through container pressure. Coordinated control strategies are crucial for indirect cold plate cooling, offering broad prospects for optimizing the cold plate design and intelligent control. The selection of refrigerant and the optimal design of the cooling method greatly improve the thermal performance of the battery. This may promote the good development of BTM.

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Section: Current Status and Research Progress Of Refrigerantsmentioning

confidence: 99%

“…It has excellent environmental friendliness. 73 , 74 More and more cars are starting to use R1234yf in AC systems. Compared with R134a, the theoretical cycle performance of the two is very close, and the operating pressure is almost the same.…”

Section: Current Status and Research Progress Of Refrigerantsmentioning

confidence: 99%

Application of Refrigerant Cooling in a Battery Thermal Management System under High Temperature Conditions: A Review

Kang,

Hu,

Zhang

et al. 2024

ACS Omega

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“…They concern the modeling of the propagation of pressure instabilities and the movement of liquefaction front, resulting from non-stable interactions of unitary nature [17]. The given solution can be applied to the phase transformation of refrigerant liquefaction implemented in mini-channels [3,16,20,26]. A regression function was used to describe the velocity of the displacement of the pressure change signal and the temperature change signal.…”

Section: Introductionmentioning

confidence: 99%

Modeling the phenomena accompanying the condensation of environmentally friendly refrigerants in mini-channels

2023

Archives of Thermodynamics

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This paper presents the results of an experimental study and mathematical modeling of the effect of dynamic instabilities on the condensation phase transformation of the refrigerants homogeneous R134a and its replacement in the form of isomers R1234yf and R1234ze and R404A or R507 and R448A in pipe mini-channels. In the case of homogeneous chlorofluorocarbons (CFCs), it is the 1234 isomers that are envisioned as substitutes for the withdrawn ones with high ozone depletion potential and global warming potential. For zeotropic and azeotropic mixtures, for example, these are R507 or R448A. The paper presents a dimensional analysis procedure based on the Buckingham Π theorem to develop a regression velocity model of pressure dynamic instabilities. The experimental part of the work was carried out with the use of tubular mini-channels with internal diameter 1.40-3.3 mm.

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Application of machine learning to the prediction of the boiling heat transfer coefficient of R32 inside a multiport mini-channel tube

Agustiarini

Hoang

et al. 2022

J Therm Anal Calorim

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Condensation heat transfer characteristics of R1234yf inside multiport mini-channel tube

Cited by 16 publications

References 32 publications

Application of Refrigerant Cooling in a Battery Thermal Management System under High Temperature Conditions: A Review

Application of Refrigerant Cooling in a Battery Thermal Management System under High Temperature Conditions: A Review

Modeling the phenomena accompanying the condensation of environmentally friendly refrigerants in mini-channels

Application of machine learning to the prediction of the boiling heat transfer coefficient of R32 inside a multiport mini-channel tube

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