Comparison of theoretical models of phase-change and sensible heat storage for air and water-based solar heating systems

Solar Energy ◽  
1989 ◽  
Vol 42 (3) ◽  
pp. 209-220 ◽  
Author(s):  
A.A. Ghoneim
Keyword(s):  
Phase Change ◽  
Heat Storage ◽  
Theoretical Models ◽  
Solar Heating ◽  
Sensible Heat ◽  
Heating Systems ◽  
Water Based

scholarly journals Review on application of phase change material in water tanks

2017 ◽  
Vol 9 (7) ◽  
pp. 168781401770359 ◽  
Author(s):  
Ling Xie ◽  
Liu Tian ◽  
Lulu Yang ◽  
Yifei Lv ◽  
Qianru Li
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Heat Storage ◽  
Solar Heating ◽  
Water Tank ◽  
Latent Heat Storage ◽  
Heating Systems ◽  
Practical Applications ◽  
Water Tanks ◽  
Change Material

Latent heat storage with phase change material is a superior way of storing thermal energy because of its high thermal storage density, isothermal nature of the storage process, and easy control. In recent years, latent heat storage systems have been increasingly used in building energy conservation, solar heating systems, and waste heat recovery systems. The water tank as a key component of solar heating systems has been widely applied in practical applications. This article first reviews the research on the water tank integrated with phase change material in terms of existing research methods and heat transfer enhancing technologies and then summarizes the applications of various phase change material–based water tanks. Finally, the further research suggestions on the phase change material–based water tank are proposed in this article. The successful completion of this review will not only deepen the understanding on the research development of phase change material–based water tank but also promote practical applications of such water tanks in solar heating systems.

Thermal Performance of a Heat Storage Module Using PCM’s With Different Melting Temperatures: Mathematical Modeling

1989 ◽  
Vol 111 (2) ◽  
pp. 152-157 ◽  
Author(s):  
Mohammed M. Farid ◽  
Atsushi Kanzawa
Keyword(s):  
Temperature Distribution ◽  
Phase Change ◽  
Phase Change Materials ◽  
Heat Storage ◽  
Small Diameter ◽  
Theoretical Models ◽  
Computer Time ◽  
Storage Unit ◽  
Radial Temperature ◽  
Melting Temperatures

In the present study, the performance of a heat storage unit consisting of number of vertical cylindrical capsules filled with phase change materials, with air flowing across them for heat exchange has been analyzed. Earlier theoretical models did not consider temperature distribution in the radial direction within the capsules, an assumption that limits their applications for small diameter capsules. The mathematical model developed in this work is based on solving the heat conduction equation in both melt and solid phases in cylindrical coordinates, taking into account the radial temperature distribution in both phases. Heat flux was then evaluated at the surface of the first row of the capsules to determine the temperature of the air leaving that row by a simple heat balance. It was found that such computation may be carried out for every few rows rather than for a single row to minimize computer time. The simulation study showed a significant improvement in the rate of heat transfer during heat charge and discharge when phase change materials with different melting temperatures were used. Air must flow in the direction of decreasing melting temperature during heat charge, while it must be reversed during heat discharge.

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