Results 11 to 20 of about 822 (152)

Heat Transfer Performance of Microfin Tubes and -Three-Dimensional Heat Transfer Tubes

Chemical Engineering Transactions, 2022
Condensation heat transfer characteristics under different working conditions were studied to determine the heat transfer performance in horizontal, smooth and enhanced heat transfer tubes.
David J. Kukulka, Rick Smith, Wei Li
doaj   +2 more sources

Influence of Microfin Tube on Heat Transfer during Flow Boiling of R134a Refrigerant

Journal of Engineering
This research looks into the domination of flow boiling on the efficiency and sustainability of refrigeration and air conditioning systems. Specifically, it focuses on the characteristics related with heat transfer of refrigerant R134a within both smooth
Neeraj Kumar Vidhyarthi, Sandipan Deb, Sameer Sheshrao Gajghate, Elaine Maria Cardoso, Mantu Das, Sagnik Pal, Ajoy Kumar Das   +6 more
doaj   +2 more sources

Convective condensation of R134a and R1234ze(E) inside microfin tube [PDF]

Journal of Physics: Conference Series, 2023
Environmental concerns are forcing the replacement of the commonly used refrigerants and finding new fluids is a top priority. The hydro-fluoro-olefin (HFO) R1234ze(E), because of its smaller global warming potential (GWP) and shorter atmospheric ...
Carraretto, I M, Colombo, L P M, Lucchini, A, Molinaroli, L, Phan, T N, Pittoni, P G   +5 more
core   +3 more sources

Recent Advances in Heat Transfer Enhancements: A Review Report

International Journal of Chemical Engineering, Volume 2010, Issue 1, 2010., 2010
Different heat transfer enhancers are reviewed. They are (a) fins and microfins, (b) porous media, (c) large particles suspensions, (d) nanofluids, (e) phase‐change devices, (f) flexible seals, (g) flexible complex seals, (h) vortex generators, (i) protrusions, and (j) ultra high thermal conductivity composite materials.
M. Siddique, A.-R. A. Khaled, N. I. Abdulhafiz, A. Y. Boukhary, Alfons Baiker   +4 more
wiley   +2 more sources

Micro-Scale Ice Shoveling Effect Induced by Magnetic-Responsive Microfins. [PDF]

Adv Sci (Weinh)
This study develops a new de‐icing solution by constructing a magneticdriven moveable surface. A novel micro‐scale ice shoveling effect is induced by the localized destruction of the ice adhesion interface owing to the inhomogeneous surface deformation is demonstrated.
Chen Y, Liu M, Zhou L, Deng J, Hou X, Mao X.   +5 more
europepmc   +2 more sources

A Review of Flow Boiling Heat Transfer in Microfin Tubes

Zhileng xuebao, 2015
Microfin tubes widely used in the refrigeration and air conditioning play an important role in enhancing the condensation and evaporation heat transfer. Experimental research and empirical correlations of flow boiling heat transfer in microfin tubes was ...
Yan Yuting, Wang Huasheng, Li Junming
doaj   +1 more source

Condensation of Hydrocarbons in Compact Smooth and Microfinned Tubes [PDF]

Energies, 2021
A database for flowing condensation of three hydrocarbons, namely propane (R290), isobutane (R600a), and propylene (R1270), is extended by experimental tests in a smooth tube and two microfinned tubes with an increase of heat exchange area of 1.51 and 2.63, respectively. The outer diameter for all of the test tubes was 5 mm.
Ehsan Allymehr, Ángel Álvarez Pardiñas, Trygve Magne Eikevik, Armin Hafner   +3 more
openaire   +2 more sources

R134a Flow Boiling inside a 4.3 mm ID Microfin Tube [PDF]

, 2016
The energy and environmental performance of refrigeration and air conditioning machines are commonly described by their Total Equivalent Warming Impact, so called TEWI, which is defined as the sum of the indirect and direct emissions.
Doretti, Luca, Longo, Giovanni A., Mancin, Simone, Righetti, Giulia, Zilio, Claudio   +4 more
core   +3 more sources

Parametric Evaluation of the Flow Boiling Heat Transfer Properties of R22 and R407c inside Horizontal Microfin Tube

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, Neeraj Kumar Vidhyarthi, Sagnik Pal, Ajoy Kumar Das, Debabrata Barik, Nagaraj Nandihalli   +5 more
wiley   +1 more source

Flow boiling of carbon dioxide: Heat transfer for smooth and enhanced geometries and effect of oil. state of the art review [PDF]

, 2019
This paper presents a state-of-the-art review on flow boiling of carbon dioxide, including experimen- tal studies and correlations for smooth and enhanced tubes, with pure CO 2 and CO 2 /lubricant mixtures.
Mastrullo, R., Mauro, A. W., Viscito, L.
core   +1 more source