Investigation of the heat exchange of a flat element in a dynamic two-phase layer

1974 ◽  
Vol 27 (5) ◽  
pp. 1307-1309
Author(s):  
A. N. Khoze ◽  
A. P. Burdukov ◽  
B. G. Pokusaev ◽  
V. A. Kuz'min
Keyword(s):  
Heat Exchange ◽  
Two Phase ◽  
Phase Layer

The effect of vapor content on the heat-exchange crisis in nonequilibrium two-phase fluxes

1972 ◽  
Vol 32 (5) ◽  
pp. 465-466
Author(s):  
L. A. Adamovich ◽  
G. M. Dvorina ◽  
V. G. Sytin
Keyword(s):  
Heat Exchange ◽  
Two Phase

Microstructure Analysis of Mechanical Energy Aided Aluminized Layer on Stainless Steel

2011 ◽  
Vol 306-307 ◽  
pp. 505-508 ◽  
Author(s):  
Xiu Chun Wang ◽  
Mu Sen Li ◽  
Qing Gang Li ◽  
Jing Zhang ◽  
Jie Ma
Keyword(s):  
Stainless Steel ◽  
Mechanical Energy ◽  
Two Phase ◽  
Phase Layer ◽  
Major Phase ◽  
Silicon Compounds ◽  
Precipitated Phase ◽  
Ni Content ◽  
Phase Pure ◽  
Heat Preservation

Mechanical energy aided aluminizing process was applied on 1Cr18Ni9 stainless steel. Aluminized layer of 30-180μm was obtained after heat preservation for 3h at low temperature of 650-700°C. The microstructure of aluminized layer and the mechanical energy aided aluminizing mechanism were analyzed. Aluminized layer consists of three major phase, pure Al layer, Me2Al7phase layer and Me2Al5 & MeAl two-phase layer, respectively. Me2Al5 and MeAl of the two-phase layer have different Ni content, with the precipitated phase of chromium-silicon compounds.

HEAT EXCHANGE PROCESSES IN POWER SEMICONDUCTOR CONVERTER INSTALLATIONS WITH EVAPORATIVE AIR COOLING

2017 ◽  
pp. 140-147
Author(s):  
Igor Kiselev ◽  
Sergey Urushev ◽  
Igor Ivanov ◽  
Yulia Vodopyanova
Keyword(s):  
Heat Exchange ◽  
Semiconductor Devices ◽  
Practical Importance ◽  
Structural Features ◽  
Air Cooling ◽  
Two Phase ◽  
Power Semiconductor ◽  
Semiconductor Converter ◽  
Exchange Processes ◽  
Improve Reliability

Objective: To improve reliability and endurance of semiconductor devices by means of heat exchange processes optimization of installations with evaporative air cooling. Methods: Design features analysis of cooling installations was applied. Results: The structural features of “a twophase thermal siphon” for power semiconductor devices were described. Experimental research of power blocks of semiconductor converter installations with “two-phase thermal siphon” coolers was conducted. The values of maximum permissible currents upon the application of possible button-type instrument configurations with such coolers were obtained. Practical importance: Application of “two-phase thermal siphon” evaporative air coolers will make it possible to improve weight-size parameters of converter installations.

Influence of selected parameters on phenomena of two-phase flow and heat exchange in TSL furnace – numerical investigation

2017 ◽  
Vol 27 (12) ◽  
pp. 2799-2815
Author(s):  
Ewa Kolczyk ◽  
Zdzisław Miczkowski ◽  
Józef Czernecki
Keyword(s):  
Numerical Simulation ◽  
Heat Exchange ◽  
Liquid Slag ◽  
Gas Flow ◽  
Two Phase Flow ◽  
New Technology ◽  
Phase Flow ◽  
Two Phase ◽  
Content Type ◽  
Submerged Lance

Purpose The purpose of this study is application of a numerical simulation for determination of the influence of geometric parameters of a furnace and hydrodynamics of the gas introduced by a vertical submerged lance on the process of feed mixing and temperature distribution. Design/methodology/approach A numerical simulation with Phoenics software was applied for modeling of liquid phase movement and heat exchange between the gas supplied through a lance and the slag feed in a top submerged lance (TSL) furnace. The simulation of a two-phase flow of a slag–gas mixture based on the inter phase slip algorithm module was conducted. The influence of selected parameters, such as depth of lance submergence, gas flow rate and change of furnace geometry, on the phenomena of movement was studied. Findings Growth of dynamics of mixing with the depth of lance submergence and with increase of gas velocity in the lance was observed. Formation of a recirculation zone in the liquid slag was registered. Movement of the slag caused by the gas flow brought homogenization of the temperature field. Originality/value The study applied the simulation of a two-phase flow in the liquid slag–gas system in steady state, taking into account heat transfer between phases. It provides possibilities for optimization and selection of process parameters within the scope of the developed new technology using a TSL furnace.

Conference on Heat Exchange and Hydrostatic Resistance during the Motion of a Two-Phase Flow

1979 ◽  
Vol 46 (6) ◽  
pp. 485-486
Author(s):  
P. A. Ushakov ◽  
A. A. Ivashkevich
Keyword(s):  
Heat Exchange ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase
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