Functional Materials for Energy Storage: Fabrication of Shape Stabilized Polymeric Phase Change Composites and the Determination of Their Thermophysical Properties for Use in Energy Conservation Applications

2011 ◽  
Author(s):  
Anjum Saleem ◽  
Lars Frormann
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Fluid Motion ◽  
Functional Materials ◽  
Temperature History ◽  
Energy Storage Materials ◽  
Flow Equations ◽  
Heat Transfer Efficiency ◽  
Penetration Behavior ◽  
The Impact

Several polymeric thermal energy storage composites of high density polyethylene and polypropylene with two commercial paraffin waxes (PCM) P27 and P31 were prepared. The compounds were further reinforced with carbon fibers and carbon nanotubes to improve their thermal conductivity and heat transfer efficiency. The impact penetration behavior, service temperature and solvent resistance of the composites were improved by the addition of SEBS. DSC, optical microscopy, SEM, impact penetration and time–temperature history studies of the materials were done to determine the structure and thermal properties of these composites. The paraffins provide energy storage effect by solid–liquid phase change. The polymers encapsulate the paraffins so that the fluid motion of the PCMs is reduced during an application. The composites prepared were used for the construction of a small prototype swimming pool (laboratory scale). The time–temperature history of the composites, water in the container with and without energy storage materials and the environment was recorded. It was found that the composites significantly prolonged the cooling down time for water in the PCM pool. The difference between the cooling down temperature of water in a container with and without PCM composite was almost 4 hours. Moreover a computer program in C++ was written to solve the heat flow equations for the calculation of theoretical temperature–time curves.

Preparing and studying of phase change energy storage materials

2010 ◽  
Vol 15 (6) ◽  
pp. 668-670 ◽  
Author(s):  
Jian-li Shang ◽  
Qiao-ming Li ◽  
Zheng-jun Wang ◽  
Peng Zhao
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Energy Storage Materials ◽  
Storage Materials

Computational analysis and identification of battery materials

2018 ◽  
Vol 4 (1) ◽  
Author(s):  
F. Meutzner ◽  
T. Nestler ◽  
M. Zschornak ◽  
P. Canepa ◽  
G. S. Gautam ◽  
...  
Keyword(s):  
Energy Storage ◽  
Functional Materials ◽  
Theoretical Background ◽  
Energy Storage Materials ◽  
Storage Materials ◽  
Mobile Species ◽  
Very Large Databases ◽  
Future Data ◽  
Structure Databases ◽  
The One

AbstractCrystallography is a powerful descriptor of the atomic structure of solid-state matter and can be applied to analyse the phenomena present in functional materials. Especially for ion diffusion – one of the main processes found in electrochemical energy storage materials – crystallography can describe and evaluate the elementary steps for the hopping of mobile species from one crystallographic site to another. By translating this knowledge into parameters and search for similar numbers in other materials, promising compounds for future energy storage materials can be identified. Large crystal structure databases like the ICSD, CSD, and PCD have accumulated millions of measured crystal structures and thus represent valuable sources for future data mining and big-data approaches. In this work we want to present, on the one hand, crystallographic approaches based on geometric and crystal-chemical descriptors that can be easily applied to very large databases. On the other hand, we want to show methodologies based onab initioand electronic modelling which can simulate the structure features more realistically, incorporating also dynamic processes. Their theoretical background, applicability, and selected examples are presented.

Thermal properties of 3‐hydroxy fatty acids and their binary mixtures as phase change energy storage materials

2019 ◽  
Vol 44 (2) ◽  
pp. 1294-1302 ◽  
Author(s):  
Jovana Jaksic ◽  
Sanja Ostojic ◽  
Darko Micic ◽  
Zorana Tokic Vujosevic ◽  
Jelena Milovanovic ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Thermal Properties ◽  
Energy Storage ◽  
Phase Change ◽  
Binary Mixtures ◽  
Hydroxy Fatty Acids ◽  
Energy Storage Materials ◽  
Storage Materials

Characterization of Metal-PCMs for Thermal Energy Storage Applications

2015 ◽  
Vol 830-831 ◽  
pp. 505-508 ◽  
Author(s):  
R. Sudheer ◽  
K. Narayan Prabhu
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Cooling Curve ◽  
Energy Storage Materials ◽  
Energy Storage Applications ◽  
Temperature Applications

In recent years phase change materials have emerged to be ideal energy storage materials for their higher energy density over sensible heat storing materials. Use of phase change materials (PCM) have been successfully implemented at lower temperature applications with various organic compounds. On the other hand, high temperature applications have been solely dominated by various salts, their eutectics and mixtures as phase change materials. This work discusses the suitability of metals and alloys for thermal energy storage applications as the phase change material. Metals offer superior thermal conductivities with considerable energy density compared to salts. Here, two alloys namely, Sn-0.3Ag-0.7Cu (SAC) solidifying over 212-224°C and ZA8 (Zn-8%Al) solidifying over 378-405°C have been studied. Thermal analysis of PCMs using Computer Aided Cooling Curve Analysis (CA-CCA) and DSC technique were performed to predict the solidification path. In addition to this, Newtonian technique was employed to estimate the latent heat of fusion for these phase change materials. Cooling rate curves and Fraction Solid curves offered a better insight into their ability to receive and discharge heat over the concerned temperature range.

Research and Application of Thermal Storage with Phase Change Materials

2011 ◽  
Vol 250-253 ◽  
pp. 3541-3544
Author(s):  
Gang Chen ◽  
Li Xia Wan
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Phase Change Materials ◽  
Heat Storage ◽  
Phase Segregation ◽  
Thermal Storage ◽  
Energy Storage Materials ◽  
Storage Materials

The types and characteristics of phase change energy storage materials were introduced ，and the current research of thermal storage with PCMS is summarized in the paper. Meanwhile the influence of stability, corrosion, phase segregation, sub-cooling, and encapsulation of phase change materials on heat storage were presented also. The applications and prospects of PCMS used in many fields were summarized in the end of the paper.

Analysis of Phase Change Energy Storage Material Selected Based on Rural Kang Body

2014 ◽  
Vol 521 ◽  
pp. 699-702
Author(s):  
Hui Xing Li ◽  
Hong Yu Ding ◽  
Guo Hui Feng ◽  
Xiao Xu Cai
Keyword(s):  
Energy Storage ◽  
Surface Temperature ◽  
Phase Change ◽  
Energy Saving ◽  
Phase Change Material ◽  
Heat Storage ◽  
Material Selection ◽  
Energy Storage Materials ◽  
Storage Materials ◽  
Change Material

Improving rural living thermal environment and rural residential energy-saving effect has becomes a hot society issue. As to two main problems of rural kang which are poor regenerative performance and surface temperature uneven,combined with the characteristics of phase change energy storage technologies,phase change energy storage technology was used in kang body. Grasping the properties and characteristics of different types of energy storage materials,according to the requirement of the human body comfort temperature of the kang surface,selecting phase transition temperature of the phase change energy storage materials which should be put forward kang surface comfort temperature between 24 ~ 35°Cphase change heat storage is particularly important. Through the phase change material selection, get three types of phase change thermal storage materials which are suitable for rural kang, which provides analysis method and basic reference for the selection of the phase change material to kang body, enhanced the heat storage capacity of kang,protected kang surface temperature uniformity and improved the energy-saving efficiency of housing in rural areas.

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