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Recent Advances in Molten Salt-Based Nanofluids as Thermal Energy Storage in Concentrated Solar Power: A
Fahim Mahtab Abir1, Qutaiba Altwarah1, Md Tasnim Rana2
1School of Engineering and Technology, Central Michigan University, Mt. Pleasant, MI 48859, USA.
Materials (Basel, Switzerland)
|February 24, 2024
Summary
This study reviews nanoparticles in molten salts (MSs) for thermal energy storage (TES) in concentrated solar power (CSP). It identifies optimal salt-nanoparticle combinations to enhance specific heat capacity (SHC) for efficient energy storage.
Area of Science:
- Materials Science
- Chemical Engineering
- Energy Storage
Background:
- Molten salts (MSs) are crucial for thermal energy storage (TES) in concentrated solar power (CSP) systems.
- Enhancing the specific heat capacity (SHC) of MSs is key to improving TES efficiency.
- Nanoparticles offer potential to significantly boost the thermophysical properties of MSs.
Purpose of the Study:
- To critically review the impact of nanoparticles on molten salts for TES in CSP.
- To identify optimal molten salt-nanoparticle combinations for enhanced SHC.
- To investigate the mechanisms behind SHC enhancement in MS nanofluids.
Main Methods:
- Comprehensive analysis of molten salt nanofluids (MSNs).
- Identification and evaluation of various salt-nanoparticle combinations.
- Review of synthesis methods and experimental characterization techniques (SHC, thermal conductivity, dispersion).
Main Results:
- Nanoparticles can significantly increase the specific heat capacity (SHC) of molten salts.
- Optimal combinations of specific salts and nanoparticles were identified for efficient SHC enhancement.
- Underlying mechanisms for SHC increase in MS nanofluids were investigated.
Conclusions:
- Molten salt nanofluids show great promise for advanced thermal energy storage in CSP.
- Further research is needed to overcome characterization challenges and optimize nanoparticle dispersion.
- Advancements in MSN technology are crucial for next-generation CSP systems.
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