scholarly journals Morphological and Structural Evaluation of Hydration/Dehydration Stages of MgSO4 Filled Composite Silicone Foam for Thermal Energy Storage Applications

2020 ◽  
Vol 10 (2) ◽  
pp. 453
Author(s):  
Elpida Piperopoulos ◽  
Luigi Calabrese ◽  
Paolo Bruzzaniti ◽  
Vincenza Brancato ◽  
Valeria Palomba ◽  
...  
Keyword(s):  
Composite Material ◽  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Morphological Evolution ◽  
Environmental Scanning Electron Microscopy ◽  
Differential Scanning Calorimetric ◽  
Salt Hydrates ◽  
Pure Salt ◽  
Set Up

Salt hydrates, such as MgSO4∙7H2O, are considered attractive materials for thermal energy storage, thanks to their high theoretical storage density. However, pure salt hydrates present some challenges in real application due to agglomeration, corrosion and swelling problems during hydration/dehydration cycles. In order to overcome these limitations, a composite material based on silicone vapor-permeable foam filled with the salt hydrate is here presented. For its characterization, a real-time in situ environmental scanning electron microscopy (ESEM) investigation was carried out in controlled temperature and humidity conditions. The specific set-up was proposed as an innovative method in order to evaluate the morphological evolution of the composite material during the hydrating and dehydrating stages of the salt. The results evidenced an effective micro-thermal stability of the material. Furthermore, dehydration thermogravimetric/differential scanning calorimetric (TG/DSC) analysis confirmed the improved reactivity of the realized composite foam compared to pure MgSO4∙7H2O.

scholarly journals Characterization of wastes based on inorganic double salt hydrates as potential thermal energy storage materials

2017 ◽  
Vol 170 ◽  
pp. 149-159 ◽  
Author(s):  
Andrea Gutierrez ◽  
Svetlana Ushak ◽  
Veronica Mamani ◽  
Pedro Vargas ◽  
Camila Barreneche ◽  
...  
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Double Salt ◽  
Energy Storage Materials ◽  
Storage Materials ◽  
Salt Hydrates

scholarly journals Identification of best available thermal energy storage compounds for low-to-moderate temperature storage applications in buildings

2018 ◽  
Vol 68 (331) ◽  
pp. 160 ◽  
Author(s):  
J. Lizana ◽  
R. Chacartegui ◽  
A. Barrios-Padura ◽  
J. M. Valverde ◽  
C. Ortiz
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Energy Storage Materials ◽  
Storage Materials ◽  
Comparative Review ◽  
Chloride Hexahydrate ◽  
Salt Hydrates ◽  
Temperature Storage

Over the last 40 years different thermal energy storage materials have been investigated with the aim of enhancing energy efficiency in buildings, improving systems performance, and increasing the share of renewable energies. However, the main requirements for their efficient implementation are not fully met by most of them. This paper develops a comparative review of thermophysical properties of materials reported in the literature. The results show that the highest volumetric storage capacities for the best available sensible, latent and thermochemical storage materials are 250 MJ/m3, 514 MJ/m3 and 2000 MJ/m3, respectively, corresponding to water, barium hydroxide octahydrate, and magnesium chloride hexahydrate. A group of salt hydrates and inorganic eutectics have been identified as the most promising for the development of competitive thermal storage materials for cooling, heating and comfort applications in the short-term. In the long-term, thermochemical storage materials seem promising. However, additional research efforts are required.

scholarly journals Thermal and Mechanical Properties of Expanded Graphite/Paraffin Gypsum-Based Composite Material Reinforced by Carbon Fiber

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2205 ◽  
Author(s):  
Bo Zhang ◽  
Yuanyuan Tian ◽  
Xiaoyan Jin ◽  
Tommy Lo ◽  
Hongzhi Cui
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Composite Material ◽  
Energy Storage ◽  
Carbon Fiber ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Expanded Graphite ◽  
Building Envelope ◽  
Thermal And Mechanical Properties

Phase change material (PCM) is a kind of thermal energy storage material. Solid-liquid PCM composite materials must overcome the issues of material leakage and low thermal conductivity before they are suitable for widespread use in the fields of building and industry. In this study, porous expanded graphite (EG) is used as a carrier, which absorbs the PCM to fabricate EG/paraffin composites (EG/P) containing 90.6% paraffin, and a latent heat of up to 105.3 J/g was measured. Because gypsum board is widely used in buildings, therefore, EG/P composites are suitable to be integrated into gypsum to develop expanded graphite/paraffin gypsum-based composite material (EGPG) for thermal energy storage. In order to optimize the performance of EGPG, carbon fiber (CF) is used to reinforce their thermal and mechanical properties. The test results show that when 1 wt % CF is incorporated into the EGPG, the thermal conductivity increased 36.0%, and thus EGPG shows superior thermal control through the significantly increased efficiency of heat transfer. After 1 wt % CF was added, the flexural and compressive strength of EGPG were increased by 65.6% and 6.4%, respectively. The improved thermal and mechanical performance of EGPG modified by CF demonstrates that it is a structural-functional integrated building material suitable for building envelope system.

Design of phase change materials based on salt hydrates for thermal energy storage in a range of 4–40 °C

2019 ◽  
Vol 139 (6) ◽  
pp. 3701-3710 ◽  
Author(s):  
Jorge A. Lovera-Copa ◽  
Svetlana Ushak ◽  
Nicole Reinaga ◽  
Islaman Villalobos ◽  
Franklin R. Martínez
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Salt Hydrates
Sign in / Sign up

Export Citation Format

Share Document