Novel photodriven composite phase change materials with bioinspired modification of BN for solar-thermal energy conversion and storage

2016 ◽  
Vol 4 (24) ◽  
pp. 9625-9634 ◽  
Author(s):  
Jie Yang ◽  
Guo-Qiang Qi ◽  
Li-Sheng Tang ◽  
Rui-Ying Bao ◽  
Lu Bai ◽  
...  
Keyword(s):  
Thermal Energy ◽  
Phase Change Materials ◽  
Solar Thermal ◽  
Solar Thermal Energy ◽  
Thermal Energy Conversion ◽  
Composite Phase Change Materials ◽  
Energy Conversion And Storage ◽  
And Storage ◽  
Novel Design ◽  
Design Guidance

A novel design guidance for the preparation of photodriven composite PCMs with greatly enhanced thermal conductivity based on the bioinspired modification of BN for solar-thermal energy storage is provided.

Solar-Thermal Energy Conversion and Storage: Conductive Heat Transfer Using Self-Assembled Bulk Graphite

2010 ◽  
Vol 74 ◽  
pp. 253-258
Author(s):  
Charles C. Sorrell ◽  
T.C. Palmer ◽  
L.J. Bowen ◽  
A. Nakaruk
Keyword(s):  
Heat Transfer ◽  
Energy Conversion ◽  
Thermal Energy ◽  
Conductive Heat Transfer ◽  
Solar Thermal ◽  
Conductive Heat ◽  
Solar Thermal Energy ◽  
Thermal Energy Conversion ◽  
Energy Conversion And Storage ◽  
And Storage

Consideration of technologies for the use of concentrated solar power (CSP) leads to the conclusion that there is substantially more energy in the sun’s heat than there is in its light. At present, solar-thermal energy conversion and storage systems using CSP have the shortcomings of the use of high pressures and potential problems with corrosion. In the development of new materials and designs, two of the key issues of consideration are the: (a) thermal properties of the materials and (b) heat transfer within the system. Most current technologies utilise convective heat transfer of liquids but there are none that use conductive heat transfer with solid-state systems. The present work introduces such a system in the form of highly dense and aligned self-assembled graphite, which can be heated in air, provided the hot face temperature is at a temperature sufficiently low to avoid the onset of oxidation. Modelling of a small domestic-scale system, which has no competition in the marketplace, consisting of: (a) 4 m diameter concentrator, (b) block of graphite weighing ~160 kg, and (c) electricity generation system demonstrates that, in only 90 min and at ≤420°C, sufficient heat can be stored to supply 25% more than is required for a typical 24 h, domestic, electricity usage cycle.

scholarly journals Silver/Polypyrrole-Functionalized Polyurethane Foam Embedded Phase Change Materials for Thermal Energy Harvesting

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3011
Author(s):  
Dongli Fan ◽  
Yuan Meng ◽  
Yuzhuo Jiang ◽  
Siyi Qian ◽  
Jie Liu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Energy Conversion ◽  
Thermal Energy ◽  
Phase Change Materials ◽  
Energy Utilization ◽  
Solar Thermal ◽  
Solar Thermal Energy ◽  
Thermal Energy Conversion ◽  
And Storage

Conversion of solar energy into thermal energy stored in phase change materials (PCMs) can effectively relieve the energy dilemma and improve energy utilization efficiency. However, facile fabrication of form-stable PCMs (FSPCMs) to achieve simultaneously energetic solar–thermal, conversion and storage remains a formidable challenge. Herein, we report a desirable solar–thermal energy conversion and storage system that utilizes paraffin (PW) as energy-storage units, the silver/polypyrrole-functionalized polyurethane (PU) foam as the cage and energy conversion platform to restrain the fluidity of the melting paraffin and achieve high solar–thermal energy conversion efficiency (93.7%) simultaneously. The obtained FSPCMs possess high thermal energy storage density (187.4 J/g) and an excellent leak-proof property. In addition, 200 accelerated solar–thermal energy conversion-cycling tests demonstrated that the resultant FSPCMs had excellent cycling durability and reversible solar–thermal energy conversion ability, which offered a potential possibility in the field of solar energy utilization technology.

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