Results 131 to 140 of about 429 (184)
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Mass transfer at the confining wall of a minichannel
Materials Today: Proceedings, 2020Abstract Experiments were conducted in a 22-cm long minichannel with a cross-section of 3 mm × 3 mm. Copper electrodes 22 in number were arranged in line with the inner surface of the minichannel. A fluid electrolyte belonging to ferri-ferro redox system is selected as liquid phase. Nitrogen acted as the gas phase. Limiting current is obtained at the
K. Ashok Kumar +2 more
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Onset of nucleate boiling in minichannels
International Journal of Thermal Sciences, 2000Abstract Heat transfer characteristics during flow boiling in a minichannel were studied. For these investigations a thermographic measuring method was used. The axial distribution of the external wall temperature was measured, from which the internal wall temperatures and the local heat transfer coefficient are calculable.
Ingo Hapke +2 more
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Subcooled Flow Boiling in a Minichannel
Heat Transfer Engineering, 2009It has been considered that the dry-out is easy to occur in boiling heat transfer for a small channel, a mini or microchannel because the channel was easily filled with coalescing vapor bubbles. In the present study, the experiments of subcooled flow boiling of water were performed under atmospheric condition for a horizontal rectangular channel of ...
Akira Oshima +3 more
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Boiling Heat Transfer in Minichannels
2006the capillary forces predominate, and they determine flow pattern and boiling heat transfer. The interest for study of boiling heat transfer in minichannels increases at last decade due to obtained possibility to makes the channels of millimeter’s and micron’s size for application in wide range of industrial devices for enhancement of heat and mass ...
V.V. Kuznetsov +2 more
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CONDENSATION IN MINICHANNELS: EXPERIMENTAL INVESTIGATION AND NUMERICAL MODELING
Interfacial Phenomena and Heat Transfer, 2015This paper presents an overview of the most recent research works on condensation heat transfer inside minichannels with halogenated refrigerants. The first part is focused on the experimental results available in the scientific literature and the effect of the main parameters (channel diameter, mass velocity, vapor quality, saturation temperature ...
DEL COL, DAVIDE, BORTOLIN, STEFANO
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Effect of Minichannel Cross Sectional Shape in Condensation
2010 14th International Heat Transfer Conference, Volume 2, 2010The objective of this work is to present new condensation heat transfer coefficients measured inside a single square cross section minichannel, having a 1.18 m side length, and compare them to the ones measured in a circular minichannel. This subject is particularly interesting since most of the mini and microchannels used in practical applications ...
DEL COL, DAVIDE +3 more
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Combustion of n-butanol in a flat minichannel
Thermophysics and Aeromechanics, 2014Combustion of n-butanol was studied experimentally at the two-phase flow in a rectangular channel of 4-mm height. Characteristics of the two-phase flow in channels with close configuration were analyzed, and the conditions of flame spread in the channel were determined.
V. V. Zamashchikov +2 more
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Refrigerant Distribution in Minichannel Evaporator Manifolds
HVAC&R Research, 2007The effects of geometry and operating conditions on the distribution of refrigerant R-410A in heat exchangers with horizontal manifolds and vertically oriented minichannels were experimentally investigated to provide the essential design information for the minichannel evaporators.
Yunho Hwang +2 more
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Computational Optimization of a Groove-Enhanced Minichannel
Heat Transfer Engineering, 2011To meet the challenging thermal requirements of modern power electronics, surface enhancements are being considered to improve the performance of single-phase microchannels. A simple modification of a surface dimple—a two-dimensional groove—is considered due to its significant potential enhancement yet simple manufacture.
Thomas E. Conder, Stephen A. Solovitz
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Gas-assisted evaporation and boiling in minichannels
International Journal of Heat and Mass Transfer, 2018Abstract This study experimentally explores the heat transfer characteristics of gas-assisted evaporation and boiling in single or two parallel minichannels under both non-boiling and boiling conditions. The liquid working fluid used is ethanol and the inert gas is helium.
Ben-Ran Fu +3 more
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