Results 11 to 20 of about 129 (110)
Numerical Simulation on flow characteristics of the supercritical fluid in Micro-Fin Tube [PDF]
E3S Web of Conferences, 2021 The flow characteristics of the supercritical fluid in the micro-fin tube is the theoretical basis for the development of heat transfer enhancement and flow resistance reduction in the micro-fin tube.
Chen Peng-Fei +4 more
doaj +1 more source
International Journal of Energy Research, Volume 2023, Issue 1, 2023., 2023 The flow boiling heat transfer performance of R22 and R407c, in a microfin tube with a helix angle of 22° and an apex angle of 48°, was evaluated in a study. The study is aimed at investigating the impact of heat flux, mass flux, saturation temperature, and vapor quality on the heat transfer coefficient during flow boiling.
Sandipan Deb +5 more
wiley +1 more source
Numerical Simulation Based on Heat Transfer Enhancement of Supercritical Fluid in Micro-Fin Tube [PDF]
E3S Web of Conferences, 2021 With the application of supercritical fluid heat transfer equipment in industrial fields such as solar thermal power generation, chemical industry, aerospace, etc., studying the heat transfer characteristics of supercritical fluid in micro-fin tubes has ...
Chen Peng-Fei +3 more
doaj +1 more source
Applied Sciences, 2021 The air conditioning and refrigeration industry is now dealing with an imminent substitution of widely implemented refrigerants having a non-negligible global warming impact.
Andrea Diani, Luisa Rossetto
doaj +1 more source
Condensation of an Azeotropic Mixture inside 2.5 mm ID Minitubes
Fluids, 2020 The ongoing miniaturization of air conditioning and refrigeration systems, in order to limit, as much as possible, the refrigerant charge, calls for smaller and smaller heat exchangers.
Andrea Diani, Luisa Rossetto
doaj +1 more source
Energies, 2023 Microfin tubes are widely used to enhance heat transfer in heat exchangers in order to reduce volumes, costs and refrigerant charge. Much experimental work has been published for the flow of liquids, while some experimental work is available for the flow
Luisa Rossetto, Andrea Diani
doaj +1 more source
Comparison between R134a and R1234ze(E) during Flow Boiling in Microfin Tubes
Fluids, 2021 Environmental concerns are forcing the replacement of commonly used refrigerants, and finding new fluids is a top priority. Soon the R134a will be banned, and the hydro-fluoro-olefin (HFO) R1234ze(E) has been indicated as an alternative due to its ...
Andrea Lucchini +4 more
doaj +1 more source
Applied Sciences, 2022 A comparative analysis of the flow boiling characteristics of R450A, R515B, and R1234ze(E) inside a 7.0 mm OD microfin tube was performed. The mass velocity was explored from low values, starting from 50 kg m−2 s−1, up to 400 kg m−2 s−1, and the heat ...
Yuce Liu, Luisa Rossetto, Andrea Diani
doaj +1 more source
A Comparative Study on the Condensation Heat Transfer of R-513A as an Alternative to R-134a
Machines, 2021 This paper presents the two-phase condensation heat transfer and pressure drop characteristics of R-513A as an alternative refrigerant to R-134a in a 9.52-mm OD horizontal microfin copper tube.
Andreas Karageorgis +2 more
doaj +1 more source
Vaporization inside a mini microfin tube: experimental results and modeling
Journal of Physics: Conference Series, 2015 This paper proposes a comparison among the common R134a and the extremely low GWP refrigerant R1234yf during vaporization inside a mini microfin tube. This microfin tube has an internal diameter of 2.4 mm, it has 40 fins, with a fin height of 0.12 mm.
DIANI, ANDREA, ROSSETTO, LUISA
openaire +2 more sources