Phase diagram, thermodynamic properties and long-term isothermal stability of quaternary molten nitrate salts for thermal energy storage

Solar Energy ◽  
2022 ◽  
Vol 231 ◽  
pp. 1061-1071
Author(s):  
Alexander Bonk ◽  
Markus Braun ◽  
Thomas Bauer
Keyword(s):  
Phase Diagram ◽  
Energy Storage ◽  
Thermodynamic Properties ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Nitrate Salts

scholarly journals Preliminary prospects of a Pumped Thermal Energy Storage (PTES) based on a supercritical CO2 Brayton cycle

2021 ◽  
Author(s):  
Karin Astrid Senta Edel ◽  
František Hrdlička ◽  
Václav Novotný
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Supercritical Co2 ◽  
Storage Systems ◽  
Renewable Energy Sources ◽  
Brayton Cycle ◽  
Term Energy ◽  
Weather Changes

As part of the change towards a higher deployment of renewable energy sources, which naturally deliver energy intermittently, the need for energy storage systems is increasing. For compensation of disturbance in power production due to inter-day to seasonal weather changes, long-term energy storage is required. In the spectrum of storage systems, one out of a few geographically independent possibilities is the storage of electricity in heat, so-called Carnot-Batteries. This paper presents a Pumped Thermal Energy Storage (PTES) system based on a recuperated supercritical CO2 Brayton cycle. The modelled system provides a round-trip efficiency of 38.9%.

Comparative investigations of sorption/resorption/cascading cycles for long-term thermal energy storage

2022 ◽  
Vol 306 ◽  
pp. 117991
Author(s):  
G.L. An ◽  
S.F. Wu ◽  
L.W. Wang ◽  
C. Zhang ◽  
B. Zhang
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage

scholarly journals Seasonal Energy Flexibility Through Integration of Liquid Sorption Storage in Buildings

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2944
Author(s):  
Luca Baldini ◽  
Benjamin Fumey
Keyword(s):  
Energy Storage ◽  
Heat Pump ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Energy System ◽  
Coefficient Of Performance ◽  
Electric Load ◽  
Single Family ◽  
Electricity Grid

The article estimates energy flexibility provided to the electricity grid by integration of long-term thermal energy storage in buildings. To this end, a liquid sorption storage combined with a compression heat pump is studied for a single-family home. This combination acts as a double-stage heat pump comprised of a thermal and an electrical stage. It lowers the temperature lift to be overcome by the electrical heat pump and thus increases its coefficient of performance. A simplified model is used to quantify seasonal energy flexibility by means of electric load shifting evaluated with a monthly resolution. Results are presented for unlimited and limited storage capacity leading to a total seasonal electric load shift of 631.8 kWh/a and 181.7 kWh/a, respectively. This shift, referred to as virtual battery effect, provided through long-term thermal energy storage is large compared to typical electric battery capacities installed in buildings. This highlights the significance of building-integrated long-term thermal energy storage for provision of energy flexibility to the electricity grid and hence for the integration of renewables in our energy system.

scholarly journals Hydrophobised carbon foams for improved long-term seasonal solar thermal energy storage

2021 ◽  
Vol 220 ◽  
pp. 110849
Author(s):  
P. Jana ◽  
E. Palomo del Barrio ◽  
M. Dubois ◽  
M. Duquesne ◽  
A. Godin ◽  
...  
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Solar Thermal ◽  
Solar Thermal Energy ◽  
Carbon Foams

scholarly journals Thermal energy storage – overview and specific insight into nitrate salts for sensible and latent heat storage

2015 ◽  
Vol 6 ◽  
pp. 1487-1497 ◽  
Author(s):  
Nicole Pfleger ◽  
Thomas Bauer ◽  
Claudia Martin ◽  
Markus Eck ◽  
Antje Wörner
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Waste Heat ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Latent Heat Storage ◽  
Decomposition Processes ◽  
Nitrate Salts ◽  
Salt Systems

Thermal energy storage (TES) is capable to reduce the demand of conventional energy sources for two reasons: First, they prevent the mismatch between the energy supply and the power demand when generating electricity from renewable energy sources. Second, utilization of waste heat in industrial processes by thermal energy storage reduces the final energy consumption. This review focuses mainly on material aspects of alkali nitrate salts. They include thermal properties, thermal decomposition processes as well as a new method to develop optimized salt systems.

scholarly journals Long term thermal energy storage with stable supercooled sodium acetate trihydrate

2015 ◽  
Vol 91 ◽  
pp. 671-678 ◽  
Author(s):  
Mark Dannemand ◽  
Jørgen M. Schultz ◽  
Jakob Berg Johansen ◽  
Simon Furbo
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Sodium Acetate ◽  
Sodium Acetate Trihydrate ◽  
Acetate Trihydrate

Low Energy Source Synthetic Thermal Energy Storage (STES)

2014 ◽  
Vol 899 ◽  
pp. 143-146 ◽  
Author(s):  
Veronika Sipkova ◽  
Jiri Labudek ◽  
Otakar Galas
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Energy Performance ◽  
Recycled Concrete ◽  
Winter Period ◽  
Summer Period ◽  
Energy Performance Of Buildings ◽  
Family House

The team of Building environment in VŠB-Technical university of Ostrava works intensively on options in long-term accumulation of heat in underground storages. The new concept follows the Directive of the European Parliament and of the Council 2010/31/EU on the energy performance of buildings [1]. The Directive requires that energy should be extensively covered of renewable sources produced at or in the vicinity of building, where it will be consumed. The aim of the research is create thermal energy storage with model structure for complex of family house. For the storage will be used recycled materials especially recycled concrete. This system will be heat source in winter period and heat consumer in summer period.

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