scholarly journals Development of a practical photochemical energy storage system. Quarterly report. [Interconversion between norbornadiene and quadricyclene for thermochemical heat storage]

1977 ◽  
Author(s):  
R.R. Hautala ◽  
C.R. Kutal
Keyword(s):  
Energy Storage ◽  
Heat Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Thermochemical Heat Storage

A novel liquid air energy storage system using a combination of sensible and latent heat storage

2021 ◽  
pp. 117890
Author(s):  
Ju-Yeol Ryu ◽  
Adrian Alford ◽  
Graham Lewis ◽  
Yulong Ding ◽  
Yunren Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Latent Heat ◽  
Heat Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Latent Heat Storage

scholarly journals Thermochemical energy storage – from fundamental research to TRL IV

2019 ◽  
Vol 108 ◽  
pp. 02013
Author(s):  
Piotr Babiński ◽  
Michalina Kotyczka – Morańska ◽  
Jarosław Zuwała
Keyword(s):  
Energy Storage ◽  
Heat Carrier ◽  
Storage Tank ◽  
Storage Capacity ◽  
Heat Storage ◽  
Solid Medium ◽  
Storage System ◽  
Reversible Reactions ◽  
Thermochemical Heat Storage ◽  
Fundamental Research

The paper presents the results of the fundamental research devoted to the application of MgSO4 as a heat carrier for thermochemical seasonal storage system devoted for household application followed by the results of 35kWh storage tank (TRL IV) charging and discharging tests. Seasonal thermochemical heat storage, based on the reversible reactions of hydratation and dehydratation of a solid medium gives an opportunity to accumulate the energy with a storage capacity exceeding 300-400 kWh/m3.

scholarly journals Optimal Design of Combined Two-Tank Latent and Metal Hydrides-Based Thermochemical Heat Storage Systems for High-Temperature Waste Heat Recovery

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4216 ◽  
Author(s):  
Serge Nyallang Nyamsi ◽  
Mykhaylo Lototskyy ◽  
Ivan Tolj
Keyword(s):  
Energy Storage ◽  
Melting Point ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Heat Storage ◽  
Waste Heat ◽  
Storage Systems ◽  
Storage System ◽  
Metal Hydrides ◽  
Thermochemical Heat Storage

The integration of thermal energy storage systems (TES) in waste-heat recovery applications shows great potential for energy efficiency improvement. In this study, a 2D mathematical model is formulated to analyze the performance of a two-tank thermochemical heat storage system using metal hydrides pair (Mg2Ni/LaNi5), for high-temperature waste heat recovery. Moreover, the system integrates a phase change material (PCM) to store and restore the heat of reaction of LaNi5. The effects of key properties of the PCM on the dynamics of the heat storage system were analyzed. Then, the TES was optimized using a genetic algorithm-based multi-objective optimization tool (NSGA-II), to maximize the power density, the energy density and storage efficiency simultaneously. The results indicate that the melting point Tm and the effective thermal conductivity of the PCM greatly affect the energy storage density and power output. For the range of melting point Tm = 30–50 °C used in this study, it was shown that a PCM with Tm = 47–49 °C leads to a maximum heat storage performance. Indeed, at that melting point narrow range, the thermodynamic driving force of reaction between metal hydrides during the heat charging and discharging processes is almost equal. The increase in the effective thermal conductivity by the addition of graphite brings about a tradeoff between increasing power output and decreasing the energy storage density. Finally, the hysteresis behavior (the difference between the melting and freezing point) only negatively impacts energy storage and power density during the heat discharging process by up to 9%. This study paves the way for the selection of PCMs for such combined thermochemical-latent heat storage systems.

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