scholarly journals EXPERIMENTAL STUDY ON HEAT FLOW IN NATURAL GROUND DURING FROZEN SEASON

2003 ◽  
pp. 135-144
Author(s):  
Zhaoyu YANG ◽  
Teruyuki SUZUKI ◽  
Seigo SAWADA ◽  
Satoshi YAMASHITA
Keyword(s):  
Experimental Study ◽  
Heat Flow

COMPUTATIONAL AND EXPERIMENTAL STUDY OF THE EFFECTIVE THERMAL CONDUCTIVITY OF FIBROUS MATERIALS

2021 ◽  
pp. 95-102
Author(s):  
N.N. Vorobev ◽  
◽  
D.Ya. Barinov ◽  
A.V. Zuev ◽  
S.I. Pakhomkin ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Experimental Study ◽  
Heat Flow ◽  
Porous Structure ◽  
Effective Thermal Conductivity ◽  
Fibrous Materials ◽  
Zone Method ◽  
Factors Influencing ◽  
Main Factors ◽  
Hot Zone

The article is devoted to the evaluation of the effect of porosity on the effective thermal conductivity of thermal insulation materials. The main factors influencing the thermal conductivity of the material, such as density, the type of porous structure of the material and humidity, are considered. The method of measuring the thermal conductivity by the stationary heat flow method and the hot zone method is described. A method for calculating the effective thermal conductivity of fibrous materials is presented. A computational and experimental study of the effective thermal conductivity is carried out and the results are analyzed.

A Numerical and Experimental Study of the Thermal Management of LEDs

2004 ◽  
Author(s):  
S. B. Chiang ◽  
M. C. Lu ◽  
W. L. Wu ◽  
M. C. Yen ◽  
C. C. Wang
Keyword(s):  
Experimental Study ◽  
Heat Flow ◽  
Thermal Management ◽  
Heat Sources ◽  
Led Lighting ◽  
Lighting Device ◽  
Overall Performance

This study examines the thermofluids characteristics of a LED lighting device. It is found that the heat sources of the present LED lighting are from the PCB and from the LED itself. To effectively improve the overall performance of the LED device, it is suggested that these two heat sources should be dealt with separately. For efficient thermal management of the LED, it is recommended to use the insulators and separate sink. The former can effectively block the heat flow from the PCB to LED panel where the latter can maintain the temperatures of PCB and LED within tolerable limit.

Transient heat flow parameters and microstructure of the upward solidified eutectic Al–Si alloy: a theoretical and experimental study

2020 ◽  
Vol 100 (21) ◽  
pp. 2659-2676
Author(s):  
Fernando S. Rocha ◽  
Thiago G. Costa ◽  
Ailton G. Oliveira ◽  
Thiago A. Costa ◽  
Ivaldo L. Ferreira ◽  
...  
Keyword(s):  
Experimental Study ◽  
Heat Flow ◽  
Flow Parameters ◽  
Transient Heat Flow
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