scholarly journals HEAT TRANSFER ANALYSIS OF A HIGH-TEMPERATURE HEAT PIPE-ASSISTED LATENT HEAT THERMAL ENERGY STORAGE SYSTEM ENHANCED BY METAL FOAM

2020 ◽  
Author(s):  
Saeed Tiari ◽  
Mahboobe Mahdavi
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Energy Storage ◽  
Metal Foam ◽  
Storage System ◽  
Energy Storage System ◽  
Heat Transfer Analysis ◽  
Thermal Energy Storage System ◽  
Temperature Heat ◽  
High Temperature Heat Pipe

Numerical Analysis of Charging Process of a Shell and Tube Latent Heat Thermal Energy Storage System With PCM Embedded in Highly Conductive Porous Material

2019 ◽  
Author(s):  
Mahboobe Mahdavi ◽  
Saeed Tiari ◽  
Carley Sawyer
Keyword(s):  
Heat Transfer ◽  
Energy Storage ◽  
Porous Material ◽  
Thermal Energy ◽  
Metal Foam ◽  
Storage System ◽  
Energy Storage System ◽  
Filling Ratio ◽  
Thermal Energy Storage System ◽  
Shell And Tube

Abstract The purpose of this study was to ascertain the effects of impregnation of porous material with the PCM on the thermal performance of a shell and tube latent heat thermal energy storage system. The heat transfer fluid flows in the tube while the phase change material is stored in the shell. A transient numerical model was developed to simulate the charging process of the system. The effects of porous material filling ratio, and its properties such as porosity and permeability, were studied on the performance of the system. The results showed that the porosity of the material or the metal foam has the greatest effect on the heat transfer and charging time of the system specifically for a filling ratio of one, or when the entire annular gap between the inner and outer tube is filled with the metal foam. As the filling ratio decreases, the effect of the porosity decreases; however, there is no linear relationship between the filling ratio and the decrease in the melting time as the porosity changes.

Heat Transfer in a High-Temperature Packed Bed Thermal Energy Storage System—Roles of Radiation and Intraparticle Conduction

1996 ◽  
Vol 118 (1) ◽  
pp. 50-57 ◽  
Author(s):  
A. A. Jalalzadeh-Azar ◽  
W. G. Steele ◽  
G. A. Adebiyi
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Storage System ◽  
Packed Bed ◽  
Energy Storage System ◽  
Operating Conditions ◽  
Thermal Energy Storage System

A model is developed and experimentally verified to study the heat transfer in a high-temperature packed bed thermal energy storage system utilizing zirconium oxide pellets. The packed bed receives flue gas at elevated temperatures varying with time during the storage process and utilizes air for the recovery process. Both convection and radiation are included in the model of the total heat transfer between the gas and the pellets. It is found that thermal radiation and intraparticle conduction do not play a major role in the overall heat transfer in the packed bed under the specified operating conditions. An uncertainty analysis is performed to investigate the propagation of the uncertainties in the variables to the overall uncertainty in the model predictions and the experimental results.

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