Thermo-physical properties and corrosivity improvement of molten salts by use of nanoparticles for concentrated solar power applications: A critical review

Aljaerani, Hatem Ahmad; Samykano, M.; Pandey, A.K.; Kadirgama, K.; Saidur, R.

doi:10.1016/j.molliq.2020.113807

Cited by 37 publications

(19 citation statements)

References 123 publications

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“…Thus, the overall energy efficiency from solar energy to electricity by biomass power generation is much smaller than 1%. In contrast, a PV cell efficiency is 12–47%, and the power generation efficiency of CSP systems is ∼40–57%. , It is, therefore, concluded that the energy efficiency of biomass power generation is less than 0.1–0.01 of those of PV and CSP.…”

Section: Characteristics Of Biomass Power Generationmentioning

confidence: 99%

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Valorization of Biomass Power Generation System: Noble Use of Combustion and Integration with Energy Storage

Fushimi

2021

Energy Fuels

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For the development of sustainable energy and a great reduction of CO2 emission into the atmosphere, renewable energy has been rapidly installed and used in the last two decades. Many biomass power plants have been built and operated because the combustion of biomass is considered to be renewable and carbon neutral. In this review, the following topics are summarized: (1) economic values of bioproducts, (2) many restrictions of biomass power generation systems such as (i) very low energy efficiency from solar power to electricity, (ii) limiting amount of resource, and (iii) requirement of fuel cost for operation, and (3) characteristics of combustion technologies including drawbacks and the following strong points: (i) high power, (ii) high-temperature heat generation, and (iii) utilization for hygiene or sanitation purposes. The reduction of simple combustion and the noble use of combustion technology by effectively utilizing these strongpoints are required to greatly reduce CO2 emission even if renewable biomass is used. Next-generation biomass power generation systems integrated with variable renewable energy and energy storage system for non-steady-state operation are proposed as a promising method to balance the intermittent electricity supply by variable renewable energy and electricity demands.

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Section: Characteristics Of Biomass Power Generationmentioning

confidence: 99%

“…In contrast, a PV cell efficiency is 12−47%, 75 and the power generation efficiency of CSP systems is ∼40−57%. 76,77 It is, therefore, concluded that the energy efficiency of biomass power generation is less than 0.1−0.01 of those of PV and CSP.…”

Section: Multiwalled Carbon Nanotube (Mwcnt) Cmentioning

confidence: 99%

Valorization of Biomass Power Generation System: Noble Use of Combustion and Integration with Energy Storage

Fushimi

2021

Energy Fuels

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“…Subsequently, nanoparticles were mainly utilized to create nanofluids, which were expected to change the thermal as well as physical properties of the underlying fluid 150 . The primary goal of the nano‐fluids is to improve the thermodynamic attributes of the composite while reducing viscosity effects 151 . The presence of nano‐particles may affect other material properties such as phase‐change enthalpy and corrosion/erosion 152 .…”

Section: Addition Of Nanoparticles In Molten Saltsmentioning

confidence: 99%

“…150 The primary goal of the nano-fluids is to improve the thermodynamic attributes of the composite while reducing viscosity effects. 151 The presence of nano-particles may affect other material properties such as phasechange enthalpy and corrosion/erosion. 152 For example, the specific heat capacity of nano-fluids, according to Buongiorno's theoretical approach, 153 should be significantly lower as compared to molten salts.…”

Section: Addition Of Nanoparticles In Molten Saltsmentioning

confidence: 99%

Molten salts: Potential candidates for thermal energy storage applications

Bhatnagar

Siddiqui

Sreedhar

et al. 2022

Intl J of Energy Research

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Summary Molten salts as thermal energy storage (TES) materials are gaining the attention of researchers worldwide due to their attributes like low vapor pressure, non‐toxic nature, low cost and flexibility, high thermal stability, wide range of applications etc. This review presents potential applications of molten salts in solar and nuclear TES and the factors influencing their performance. Ternary salts (Hitec salt, Hitec XL) are found to be best suited for concentrated solar plants due to their lower melting point and higher efficiency. Two‐tank direct energy storage system is found to be more economical due to the inexpensive salts (KCl‐MgCl2), while thermoclines are found to be more thermally efficient due to the power cycles involved and the high volumetric heat capacity of the salts involved (LiF‐NaF‐KF). Heat storage density has been given special focus in this review and methods to increase the same in terms of salt composition changes are discussed in the paper. Methods of concatenating energy storage systems with nuclear power plants are also discussed with different types of nuclear reactors like MHTGR, PAHTR, VHTR, etc. Nanomodifications of molten salts are done to improve heat transfer properties and efficiency of the transfer. The best dopants for such modifications were found to be TiO2, SiO2, MWCNTs, etc. Future challenges for large scale deployment of molten salts viz., high volume expansion ratio, low thermal conductivity, incongruent melting, corrosion, etc., are listed and discussed. Corrosion of molten salts and its mitigation has been discussed in detail for developing next‐generation storage systems and its remedies are also discussed.

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“…Concentrated solar power (CSP) plant is a promising way to achieve low-cost commercial power generation in the near future. Molten salts are known for their advantages, such as being cheap, abundant in supply and high-temperature compatibility, permitting them for potential application as sensible storage media and heat transfer fluid for CSP plants Aljaerani et al (2020). reviewed the enhancement of CSP plant efficiency via use of nanoenhanced molten salts Sahin et al (2020).…”

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confidence: 99%

Heat Transfer Enhancement-a Brief Review of Literature in 2020 and Prospects

et al. 2021

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This review provides a brief literature survey on enhanced heat transfer research published in the English language journals in 2020. A topic search containing either "heat transfer" or "heat transport" or "thermal transport" in the Web of Science resulted in over 28,000 papers published in 2020 and nearly 30% were relevant to heat transfer intensification, which indicates the importance and rapid development of heat transfer enhancement technologies. The chosen studies focus on various heat transfer enhancement research categorized into conduction, convection, radiation, boiling and condensation, energy storage, thermal management, and cross research involving two or more categories. Heat conduction papers are selected from the micro/nanoscale areas with a focus on interfacial phenomena. Important active, passive, and compound techniques for enhancing convective heat transfer are incorporated. Thermal radiation is concentrated on near-2 field radiation and solar energy. Heat transfer enhancement in boiling and condensation as well as in thermal energy storage, renewable and sustainable energy, and thermal management of electronics and high-end equipment is critical in many engineering applications. From the selected literature published in 2020, significant attempts have been made to research and development on heat transfer enhancement technology covering both conventional and emerging techniques. The prospects of the heat transfer enhancement research are reflected according to the literature survey.Research of innovative heat transfer enhancement techniques is immense, encompassing every aspect from understanding the fundamental theory and physical mechanisms of various heat transfer enhancement techniques to their applications. Research of emerging techniques using new interfacial materials, nanofluids, micro-and nano-structures, microchannels, and new compound enhancement techniques incorporating conventional and new techniques becomes popular.However, there are big challenges in understanding the mechanisms, engineering design methodology and applications with these emerging techniques. Many aspects are urgently needed to be investigated and developed to achieve systematic theory, mechanisms and design methodology for applications in thermal processes, energy storage, renewable energy, decarbonized heating and cooling and many industrial and civil sectors.

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Thermo-physical properties and corrosivity improvement of molten salts by use of nanoparticles for concentrated solar power applications: A critical review

Cited by 37 publications

References 123 publications

Valorization of Biomass Power Generation System: Noble Use of Combustion and Integration with Energy Storage

Valorization of Biomass Power Generation System: Noble Use of Combustion and Integration with Energy Storage

Molten salts: Potential candidates for thermal energy storage applications

Heat Transfer Enhancement-a Brief Review of Literature in 2020 and Prospects

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