scholarly journals Phase change materials in solar domestic hot water systems: A review

2021 ◽  
Vol 10 ◽  
pp. 100075 ◽  
Author(s):  
Eleni Douvi ◽  
Christos Pagkalos ◽  
George Dogkas ◽  
Maria K. Koukou ◽  
Vassilis N. Stathopoulos ◽  
...  
2009 ◽  
Vol 34 (6) ◽  
pp. 1639-1643 ◽  
Author(s):  
Muhsin Mazman ◽  
Luisa F. Cabeza ◽  
Harald Mehling ◽  
Miquel Nogues ◽  
Hunay Evliya ◽  
...  

2020 ◽  
Vol 989 ◽  
pp. 165-171
Author(s):  
A.M. Morzhukhin ◽  
D.S. Testov ◽  
S.V. Morzhukhina

The types of heat accumulation and the types of heat-accumulating materials are considered. It is shown that the most promising as heat-accumulating materials for heating and hot water are the salts hydrates. Based on the conducted factor analysis, a number of criteria are excluded from further consideration, which significantly reduces the list of criteria considered for selecting phase change materials (PCM) and simplifies further work on the selection of the most promising materials. There were selected from over 160 salt hydrates as PCM for the future of composite synthesis for the heating and hot water the Na (CH3COO) •3H2O, Ba (OH)2•8H2O, Mg (NO3)2 •6H2O and Zn (NO3)2•6H2O.


2015 ◽  
Vol 42 ◽  
pp. 557-568 ◽  
Author(s):  
M.K. Anuar Sharif ◽  
A.A. Al-Abidi ◽  
S. Mat ◽  
K. Sopian ◽  
M.H. Ruslan ◽  
...  

Author(s):  
Stéphane Gibout ◽  
Jean-Pierre Bedecarrats ◽  
Erwin Franquet ◽  
Jean Castaing-Lasvignottes ◽  
Jean-Pierre Dumas

2019 ◽  
Vol 116 ◽  
pp. 00016
Author(s):  
George Dogkas ◽  
John Konstantaras ◽  
Maria K. Koukou ◽  
Vassilis N. Stathopoulos ◽  
Luis Coelho ◽  
...  

A full-scale thermal energy storage system using phase change materials (PCM) is experimentally investigated for solar and geothermal applications. The system consists of a rectangular tank filled with PCM and a staggered fin tube heat exchanger (HE). The system is designed for the production of Domestic Hot Water (DHW) based on the EU Commission Regulation No 814/2013 [1] requirements. The characteristics that are studied are the stored energy density of the system, the heat transfer rate through the HE during the charging and discharging processes, the adequacy of produced hot water amount and the storage efficiency of the tank. The results of the experiments confirmed the potential of the system to meet several prerequisites of a DHW installation and in addition to make the operation of the coupled solar collector or ground heat pump efficient.


2021 ◽  
Vol 11 (21) ◽  
pp. 10229
Author(s):  
Maxime Thonon ◽  
Laurent Zalewski ◽  
Stéphane Gibout ◽  
Erwin Franquet ◽  
Gilles Fraisse ◽  
...  

This study presents an experimental comparison of three characterization methods for phase change materials (PCM). Two methods were carried out with a calorimeter, the first with direct scanning (DSC) and the second with step scanning (STEP). The third method is a fluxmetric (FM) characterization performed using a fluxmeter bench. For the three methods, paraffin RT58 and polymer PEG6000, two PCM suitable for domestic hot water (DHW) storage, were characterized. For each PCM, no significant difference was observed on the latent heat and the total energy exchanged between the three characterization methods. However, DSC and STEP methods did not enable the accurate characterization of the supercooling process observed with the FM method for polymer PEG6000. For PEG6000, the shape of the enthalpy curve of melting also differed between the experiments on the calorimeter—DSC and STEP—methods, and the FM method. Concerning the PCM comparison, RT58 and PEG6000 appeared to have an equivalent energy density but, as the mass density of PEG6000 is greater, more energy is stored inside the same volume for PEG6000. However, as PEG6000 experienced supercooling, the discharging temperature was lower than for RT58 and the material is therefore less adapted to DHW storage operating with partial phase change cycles where the PCM temperature does not decrease below 52 °C.


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