Results 11 to 20 of about 4,323,986 (291)

R134a flow boiling heat transfer in small diameter tubes [PDF]

open access: yes, 2007
Copyright @ 2007 RT Edwards Inc.Boiling heat transfer in small diameter tubes has been experimentally investigated using R134a as the working fluid. The heat transfer periments were conducted with two stainless steel tubes of internal diameter 4.26 mm ...
Huo, Y, Karayiannis, TG, Tian, S
core   +6 more sources

Flow patterns and heat transfer for flow boiling in small to micro diameter tubes [PDF]

open access: yes, 2008
An overview of the recent developments in the study of flow patterns and boiling heat transfer in small to micro diameter tubes is presented. The latest results of a long-term study of flow boiling of R134a in five vertical stainless steel tubes of ...
Karayiannis, TG   +3 more
core   +6 more sources

Determination of the convective heat transfer coefficient [PDF]

open access: yesDental Materials, 1987
The value of the convective heat transfer coefficient (htc) is determined under different loading conditions by using a computer aided method. The thermal load has been applied mathematically as well as experimentally to the coronal surface of an axisymmetric tooth model.
Spierings, D.   +3 more
openaire   +3 more sources

Experimental Research on the Flow and Heat Transfer Characteristics of Subcritical and Supercritical Water in the Vertical Upward Smooth and Rifled Tubes

open access: yesEnergies, 2022
Experiments were conducted to investigate the heat transfer and flow characteristics of the vertical upward smooth and rifled tubes from subcritical to supercritical pressure. The distributions of wall temperature and heat transfer coefficient (HTC) were
Xiaocheng Du   +5 more
doaj   +1 more source

Comparative Numerical Study on Global Heat Transfer Process in Micro-Channel Gas Coolers with Different Structures [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
A numerical simulation of global heat transfer process in three types of micro-channel heat exchangers was investigated in this paper: spiral double-pipe micro-channel heat exchanger (DPHE), cross-plate micro-channel heat exchanger (CPHE), and shell and ...
D. Yang, N. Wang, J. Xie, J. Wang
doaj   +1 more source

Tyre–Road Heat Transfer Coefficient Equation Proposal

open access: yesApplied Sciences, 2023
Tyres are one of the most important elements of a vehicle because they are the link to the road and have a huge impact on traffic-related pollution. Knowing their behaviour, thus being able to use them at their best and reducing their wear rate, is one ...
Paolo Cattani   +2 more
doaj   +1 more source

Experimental studies on nucleate pool boiling heat transfer to ethanol/MEG/DEG ternary mixture as a new coolant [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2012
In this paper, nucleate pool boiling heat transfer coefficient of ternary mixtures of ethanol, monoethylene glycol (MEG) and diethylene glycol (DEG) as a new coolant with higher heat transfer coefficient has been investigated.
Sarafraz M.M.   +2 more
doaj   +1 more source

Experimental Investigation of Two-Phase Flow Boiling Heat Transfer Coefficient and Pressure Drop of R448A inside Multiport Mini-Channel Tube

open access: yesEnergies, 2022
Regulations and restrictions against high global warming potential (GWP) refrigerants have been introduced to encourage the adoption of environmentally friendly refrigerants and mitigate the environmental impact of the HVAC industry.
Hieu Ngoc Hoang   +2 more
doaj   +1 more source

A general method for calculation of flow boiling and flow condensation heat transfer coefficients in minichannels [PDF]

open access: yes, 2009
This paper was presented at the 2nd Micro and Nano Flows Conference (MNF2009), which was held at Brunel University, West London, UK. The conference was organised by Brunel University and supported by the Institution of Mechanical Engineers, IPEM, the ...
2nd Micro and Nano Flows Conference (MNF2009)   +3 more
core   +6 more sources

Identification of the average and local boundary condition of heat transfer during cooling with a water spray under surface boiling [PDF]

open access: yesComputer Methods in Materials Science, 2020
The study determined the local and average heat transfer coefficient and the heat flux on the surface of a cylinder cooled with a water nozzle. The inverse method was used to identify the heat transfer coefficient.
Elżbieta Jasiewicz   +2 more
doaj   +1 more source

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