scholarly journals A Low-Temperature Heat Output Photoactive Material-Based High-Performance Thermal Energy Storage Closed System

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1434
Author(s):  
Xiangyu Yang ◽  
Shijie Li ◽  
Jin Zhang ◽  
Xiaomin Wang ◽  
Yongzhen Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Low Temperature ◽  
Closed System ◽  
High Performance ◽  
Energy Output ◽  
Heat Output ◽  
Photothermal Conversion ◽  
Long Term Stability ◽  
Conversion Materials ◽  
The One

Designing and synthesizing photothermal conversion materials with better storage capacity, long-term stability as well as low temperature energy output capability is still a huge challenge in the area of photothermal storage. In this work, we report a brand new photothermal conversion material obtained by attaching trifluoromethylated azobenzene (AzoF) to reduced graphene oxide (rGO). AzoF-rGO exhibits outstanding heat storage density and power density up to 386.1 kJ·kg−1 and 890.6 W·kg−1, respectively, with a long half-life (87.7 h) because of the H-bonds based on high attachment density. AzoF-rGO also exhibits excellent cycling stability and is equipped with low-temperature energy output capability, which achieves the reversible cycle of photothermal conversion within a closed system. This novel AzoF-rGO complex, which on the one hand exhibits remarkable energy storage performance as well as excellent storage life span, and on the other hand is equipped with the ability to release heat at low temperatures, shows broad prospects in the practical application of actual photothermal storage.

scholarly journals Performance Analysis of a Solar Dryer Integrated With Thermal Energy Storage Using PCM- Al2O3 Nanofluids

2021 ◽  
Author(s):  
Babu Sasi Kumar Subrananiam ◽  
Arun Kumar Sugumaran ◽  
Muthu Manokar Athikesavan
Keyword(s):  
Energy Storage ◽  
Flow Rate ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Engine Oil ◽  
Energy Output ◽  
Heat Output ◽  
Parabolic Trough ◽  
Waste Engine Oil ◽  
Solar Dryer

Abstract The use of solar energy will help to reduce the cost of fossil fuels .The present work is based on the study of a solar dryer with thermal storage using the working medium of water and waste engine oil at a flow rate of 0.035, 0.045 and 0.065 lit / sec. Heat was collected from a parabolic trough collector (PTC) and stored into thermal energy storage (TES) device. The TES consisted of rectangular boxes for stored heat containing Stearic acid phase change materials (PCM) with 0.3vol% of Al2O3 nanofluids. The parabolic trough reflected solar radiation focused on the receiver and the collected heat was stored in the storage medium after it was forced into circulation and transferred to the solar dryer. The dryer used the energy output in the storage tank at varying water and waste oil medium flow rates and discussed heat output of the drying crops of groundnut, ginger and turmeric were showed the flow rate of 0.035, 0.045 and 0.065 lit/ sec with water and waste engine oil medium. Finally, based on the findings of the tests, this research may be useful in agriculture, especially in the drying of vegetables.

Facile fabrication of nanostructured NiCo2O4 supported on Ni foam for high performance electrochemical energy storage

RSC Advances ◽  
2015 ◽  
Vol 5 (98) ◽  
pp. 80620-80624 ◽  
Author(s):  
Changhui Wang ◽  
Xiong Zhang ◽  
Chen Li ◽  
Xianzhong Sun ◽  
Yanwei Ma
Keyword(s):  
Energy Storage ◽  
Low Temperature ◽  
Electrochemical Performance ◽  
High Performance ◽  
Electrochemical Energy Storage ◽  
Ni Foam ◽  
Facile Fabrication ◽  
Electrochemical Energy

Nanostructured NiCo2O4 supported on Ni foam with high electrochemical performance was fabricated via a green and low-temperature technique for energy storage.

An In-Situ Post Growth Annealing Process for the Improvement of 4H-SiC/SiO2 MOS Interface Prepared by CVD Using TEOS, and its Characteristic Study

2005 ◽  
Vol 483-485 ◽  
pp. 681-684
Author(s):  
Kumaresan Ramanujam ◽  
Hidetsugu Furuichi ◽  
Koshi Taguchi ◽  
Satoshi Yukumoto ◽  
Shigehiro Nishino
Keyword(s):  
Low Temperature ◽  
High Performance ◽  
Semiconductor Device ◽  
Oxide Semiconductor ◽  
Interface Properties ◽  
Amorphous Sio2 ◽  
Interface Quality ◽  
N2 Atmosphere ◽  
The One

Investigations were carried out to achieve high performance Silicon Carbide Metal-Oxide-Semiconductor device structures. 4H-SiC/SiO2 interface was prepared by growing amorphous SiO2 layers by an alternate low temperature atmospheric CVD technique using TEOS as source material and the interface properties were compared with the one prepared by conventional thermal oxidation technique. The low temperature CVD technique offered the improvement of the interface properties with reduced Dit in comparison with thermally oxidized interface. As a new attempt, an in situ post growth annealing technique in N2 atmosphere was carried out to reduce the Dit further. Both the CVD technique and the in situ annealing processes that were used in the present study have been identified to be potential approaches to improve the interface quality.

CBED study of low-temperature InP grown by gas source MBE

1993 ◽  
Vol 51 ◽  
pp. 810-811
Author(s):  
R. Rajesh ◽  
M.J. Kim ◽  
J.S. Bow ◽  
R.W. Carpenter ◽  
G.N. Maracas
Keyword(s):  
Low Temperature ◽  
Second Phase ◽  
Material System ◽  
Ion Milling ◽  
Electrical Measurements ◽  
Gas Source ◽  
Structural And Electrical Properties ◽  
The One ◽  
Lt Inp ◽  
Gas Source Mbe

In our previous work on MBE grown low temperature (LT) InP, attempts had been made to understand the relationships between the structural and electrical properties of this material system. Electrical measurements had established an enhancement of the resistivity of the phosphorus-rich LT InP layers with annealing under a P2 flux, which was directly correlated with the presence of second-phase particles. Further investigations, however, have revealed the presence of two fundamentally different types of precipitates. The first type are the surface particles, essentially an artefact of argon ion milling and containing mostly pure indium. The second type and the one more important to the study are the dense precipitates in the bulk of the annealed layers. These are phosphorus-rich and are believed to contribute to the improvement in the resistivity of the material.The observation of metallic indium islands solely in the annealed LT layers warranted further study in order to better understand the exact reasons for their formation.

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