Experimental study of porosity and effective thermal conductivity in packed bed of nano-structured FeTi for usage in hydrogen storage tanks

2019 ◽  
Vol 44 (41) ◽  
pp. 23239-23248 ◽  
Author(s):  
Masahiro Matsushita ◽  
Ikko Tajima ◽  
Masatake Abe ◽  
Hideki Tokuyama
Keyword(s):  
Thermal Conductivity ◽  
Experimental Study ◽  
Hydrogen Storage ◽  
Effective Thermal Conductivity ◽  
Packed Bed ◽  
Storage Tanks

scholarly journals Experimental Study on Thermal Conductivity and Hardness of Cu and Ni Nanoparticle Packed Bed for Thermoelectric Application

2017 ◽  
Vol 12 (1) ◽  
Author(s):  
Zi-Zhen Lin ◽  
Cong-Liang Huang ◽  
Wen-Kai Zhen ◽  
Yan-Hui Feng ◽  
Xin-Xin Zhang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Experimental Study ◽  
Packed Bed ◽  
Thermoelectric Application

scholarly journals The effect of particle shape on the packed bed effective thermal conductivity based on DEM with polyhedral particles on the GPU

2020 ◽  
Vol 219 ◽  
pp. 115584 ◽  
Author(s):  
Nicolin Govender ◽  
Paul W. Cleary ◽  
Mehran Kiani-Oshtorjani ◽  
Daniel N. Wilke ◽  
Chuan-Yu Wu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Particle Shape ◽  
Packed Bed ◽  
Polyhedral Particles

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.

scholarly journals Measurement of Thermal Conductivity along the Radial Direction in a Vertical Cylindrical Packed Bed

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Swaren Bedarkar ◽  
Nurni Neelakantan Viswanathan ◽  
Nidambur Bharatha Ballal
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Crucial Role ◽  
Iron Ore ◽  
Radial Direction ◽  
Thermal Response ◽  
Packed Bed ◽  
Lumped Parameter ◽  
Scientists And Engineers

Heat transfer in packed beds and their thermal response have been of great interest for scientists and engineers for the last several years, since they play a crucial role in determining design and operation of reactors. Heat transfer of a packed bed is characterised through lumped parameter, namely, effective thermal conductivity. In the present studies, experiments were performed to investigate the thermal conductivity of a packed bed in radial direction. The packed bed was formed using iron ore particles. To determine the effective thermal conductivity a new transient methodology is proposed. The results obtained were compared with the models proposed by ZBS and Kunii and Smith.

Experimental and Theoretical Modeling of the Effective Thermal Conductivity of Rough Steel Spheroid Packed Beds

2003 ◽  
Vol 125 (4) ◽  
pp. 693-702 ◽  
Author(s):  
G. Buonanno ◽  
A. Carotenuto ◽  
G. Giovinco ◽  
N. Massarotti
Keyword(s):  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Solid Mechanics ◽  
Packed Bed ◽  
Elementary Cell ◽  
Upper And Lower Bounds ◽  
Packed Beds ◽  
The Finite Element Method ◽  
Two Phase ◽  
Experimental Apparatus

The upper and lower bounds of the effective thermal conductivity of packed beds of rough spheres are evaluated using the theoretical approach of the elementary cell for two-phase systems. The solid mechanics and thermal problems are solved and the effects of roughness and packed bed structures are also examined. The numerical solution of the thermal conduction problem through the periodic regular arrangement of steel spheroids in air is determined using the Finite Element Method. The numerical results are compared with those obtained from an experimental apparatus designed and built for this purpose.

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