Results 1 to 10 of about 3,678,063 (310)

Numerical Study of the Dynamic Response of Heat and Mass Transfer to Operation Mode Switching of a Unitized Regenerative Fuel Cell

open access: yesEnergies, 2016
Knowledge concerning the complicated changes of mass and heat transfer is desired to improve the performance and durability of unitized regenerative fuel cells (URFCs).
Hong Xiao   +3 more
doaj   +1 more source

COMPLEX INVESTIGATIONS OF THERMALPHYSIC AND INFRA-RED CHARACTERISTICS AT THE PHASE INVERSIONS

open access: yesЛитьë и металлургия, 2005
The complex methods of investigation of heat exchange at crystallization and melting of selectively transparent materials in terms of changing of external heat influences, which include calorimetry of IK-currents, temperature taking, the heat conduction ...
V. L. Dragun   +3 more
doaj  

Optimization of channel geometry in a mini-cooling system: A study of triangular, square, and semicircular sections

open access: yesResults in Engineering
This work examines both experimental and numerical methodologies for a cooling system applied to a copper flat plate under steady-state conditions. The primary factors examined are different inlet fluid temperatures, high applied heat rates, and the ...
Samaneh Amini Ahour   +3 more
doaj   +1 more source

Computational Study of Heat Transfer inside Different PCMs Enhanced by Al2O3 Nanoparticles in a Copper Heat Sink at High Heat Loads

open access: yesNanomaterials, 2020
The cooling of electronic elements is one of the most important problems in the development of architecture in electronic technology. One promising developing cooling method is heat sinks based on the phase change materials (PCMs) enhanced by nano-sized ...
Nadezhda S. Bondareva   +2 more
doaj   +1 more source

Study on the Characteristics of Expander Power Output Used for Offsetting Pumping Work Consumption in Organic Rankine Cycles

open access: yesEnergies, 2014
The circulation pump in an organic Rankine cycle (ORC) increases the pressure of the liquid working fluid from low condensing pressure to high evaporating pressure, and the expander utilizes the pressure difference to generate work.
Yu-Ting Wu   +6 more
doaj   +1 more source

Experimental study on heat transfer resistance of condensation heat transfer in high efficiency heat transfer

open access: yesIOP Conference Series: Earth and Environmental Science, 2019
Abstract The condensation heat transfer experiment of R134a inside the horizontal enhanced tube was operated under the condensation temperatures of 35°C, 40°C and 45°C. Firstly, correlations were used to predict the heat transfer coefficient inside the tube to check the experimental data reliability.
L X Ma, K Lu
openaire   +1 more source

Two-Dimensional Simulation of Mass Transfer in Unitized Regenerative Fuel Cells under Operation Mode Switching

open access: yesEnergies, 2016
A two-dimensional, single-phase, isothermal, multicomponent, transient model is built to investigate the transport phenomena in unitized regenerative fuel cells (URFCs) under the condition of switching from the fuel cell (FC) mode to the water ...
Lulu Wang   +3 more
doaj   +1 more source

Design and Operating Performance of Mechanical Draft Dry Cooling Tower Pre-cooled with Wet Medium

open access: yesZhongguo dianli
In order to solve the problem of insufficient output of mechanical draft dry cooling tower which can’t meet the cooling demand in summer, a mechanical draft dry cooling tower with wet medium pre-cooling inlet air system is designed in this paper.
Mingwei WANG   +6 more
doaj   +1 more source

A Method of Calculating a Time-Varying Volume of Combustion Products in the Cylindrical Chamber

open access: yesМеханика машин, механизмов и материалов, 2008
A method of calculating a volume of combustion products when a flame spreads in the closed cylindrical chamber is developed, assuming that the front is spherical for two positions of an ignition source: at the end (central ignition) and cylindrical (side
M.S. Assad   +2 more
doaj  

MONITORING OF THE HEAT TRANSFER IN BUILDINGS

open access: yesInternational Journal of Computing, 2002
In paper is introduced measurement method for monitoring of temperatures on big objects. Measurement equipment used in method and results on known object are also introduced. When temperatures are monitored for a long period of time (at least 14 days), the lost of heat, quality of isolation and quality of heat regulation can be estimated.
Gorazd Lipnik, Vojko Matko
openaire   +2 more sources

Home - About - Disclaimer - Privacy