Techno-economic assessment of a high-efficiency, low-cost solar-thermal power system with sodium receiver, phase-change material storage, and supercritical CO2 recompression Brayton cycle

Solar Energy ◽  
2020 ◽  
Vol 199 ◽  
pp. 885-900 ◽  
Author(s):  
Alberto de la Calle ◽  
Alicia Bayon ◽  
John Pye
Keyword(s):  
Phase Change ◽  
Supercritical Co2 ◽  
High Efficiency ◽  
Low Cost ◽  
Thermal Power ◽  
Economic Assessment ◽  
Brayton Cycle ◽  
Solar Thermal Power ◽  
Thermal Power System ◽  
Change Material

Solar Thermal Closed-Helium Brayton Cycle With High Temperature Phase-Change Thermal Storage

2010 ◽  
Author(s):  
Xinhai Xu ◽  
M. M. Valmiki ◽  
Saurabh Pradhan ◽  
Hsinhung Liu ◽  
Peiwen Li
Keyword(s):  
High Temperature ◽  
Phase Change ◽  
Power Plants ◽  
Thermal Power ◽  
High Temperature Phase ◽  
Solar Thermal ◽  
Temperature Phase ◽  
Brayton Cycle ◽  
Technical Issues ◽  
Change Material

A 1 MW closed helium Brayton cycle is proposed in this study to eliminate the use of water in solar thermal power plants in arid areas. The power system uses highly concentrated sunlight to generate heat at temperatures around 850 to 900 °C. The heat is used in a closed, helium Brayton cycle and is partly stored in a high temperature phase-change material to provide heat for nighttime use. The energy efficiency of the system is analyzed. Other technical issues are discussed.

Controlling effect of phase change material based heat exchanger on supercritical CO2 Brayton cycle

2020 ◽  
Vol 277 ◽  
pp. 122994 ◽  
Author(s):  
Tianrui Deng ◽  
Xinyi Li ◽  
Lianjie Zhang ◽  
Jie Lian ◽  
Ting Ma ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Phase Change ◽  
Phase Change Material ◽  
Supercritical Co2 ◽  
Brayton Cycle ◽  
Controlling Effect ◽  
Change Material

Numerical Investigation of Nitrate Leakage and Migration in the Soil after Rainfall

2014 ◽  
Vol 1010-1012 ◽  
pp. 429-436
Author(s):  
Jin Hua Shan ◽  
Jing Ding ◽  
Jian Feng Lu
Keyword(s):  
Heat Transfer ◽  
Thermal Power ◽  
Nitrate Salt ◽  
Storage Medium ◽  
Migration Process ◽  
Solar Thermal Power ◽  
Salt Layer ◽  
Thermal Power System ◽  
And Migration ◽  
And Storage

Nitrate salt is important heat transfer and storage medium in solar thermal power system, but nitrate salt leakage and pollution in groundwater is seldom investigated. In this paper, the nitrate salt leakage and migration in the soil after rainfall are simulated and analyzed. During the nitrate leakage process, the liquid nitrate will solidify, and then a thin solidification layer of nitrate forms. According to the simulation result, the radius of the leakage opening mainly affects the radius of nitrate solidification layer, while the leakage velocity will influence the radius and thickness of salt layer. During the nitrate migration process after rainfall, the nitrate will gradually migrate to the groundwater, and the final migration domain of nitrate in the soil will be mainly determined by the radius of nitrate solidification layer.

scholarly journals vegetable fat: A low-cost bio-based phase change material for thermal energy storage in buildings

2019 ◽  
Vol 21 ◽  
pp. 222-229 ◽  
Author(s):  
Lisa Boussaba ◽  
Said Makhlouf ◽  
Amina Foufa ◽  
Gilles Lefebvre ◽  
Laurent Royon
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Low Cost ◽  
Change Material ◽  
Vegetable Fat
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