Evaluation of Heat Output Densities of Lithium Chloride-Modified Magnesium Hydroxide for Thermochemical Energy Storage

2013 ◽  
Vol 52 (15) ◽  
pp. 5321-5325 ◽  
Author(s):  
Hirokazu Ishitobi ◽  
Naoya Hirao ◽  
Junichi Ryu ◽  
Yukitaka Kato
Keyword(s):  
Energy Storage ◽  
Lithium Chloride ◽  
Magnesium Hydroxide ◽  
Heat Output

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.

scholarly journals Simulations on Design and System Performance of Building Heating Boosted by Thermal Energy Storage (TES) with Magnesium Hydro Carbonates/Silica Gel

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4520
Author(s):  
Rickard Erlund ◽  
Ron Zevenhoven
Keyword(s):  
Energy Storage ◽  
Heat Pump ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Electrical Resistance ◽  
Storage Capacity ◽  
Heating System ◽  
Heat Output ◽  
In Series ◽  
And Storage

In this paper, a simulations model of a seasonal thermal energy storage (TES) reactor integrated into a house heating system is presented. The water vapour chemisorbing reactor contains a composite material composed of silica gel and hydrated magnesium carbonate (nesquehonite, MgCO3·3H2O) that can be produced by a carbon capture and storage by mineralisation process. The performance of the TES to supply winter heat instead of electrical resistance heat is analysed. Dividing the reactor into a few units (connected in series) for better heat output and storage capacity as developed by the authors is compared to one unit or parallel unit solutions. The heating system components are an exhaust air heat pump, solar collectors and a heat recovery ventilation unit (HRV). The TES is used as heat source during colder periods, which implies improved efficiency and coefficient of performance (COP). Around 70% of electrical resistance heat, assisting an exhaust air heat pump during cold periods, can be substituted with heat from the TES according to the simulation model. Connecting three units in series will increase the usable storage capacity possibilities with by a 49% higher heat output.

Thermochemical energy storage drastically enhanced by zirconium oxide and lithium hydroxide for magnesium hydroxide

2021 ◽  
Author(s):  
En‐Xu Ren ◽  
Deng‐Yu Wang ◽  
Ya‐Ting Li ◽  
Lin Zhu ◽  
Chao‐Yang Chang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Magnesium Hydroxide ◽  
Zirconium Oxide ◽  
Lithium Hydroxide
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