Latent and sensible energy storage enhancement of nano-nitrate molten salt

Awad, Afrah; Burns, A. D.; Waleed, Muayad; Al‐Yasiri, Mortatha; Wen, Dongsheng

doi:10.1016/j.solener.2018.04.012

Cited by 28 publications

(9 citation statements)

References 20 publications

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“…incorporated CuO nano-particles in solar salt by two different methods to increase its heat capacity and latent heat. The study successfully enhanced heat capacity by 22% at the maximum and latent heat capacity by 67% by modifying the compositions [36]. Sintered bauxite is another example of material for a sensible TES system [37].…”

Section: Materials For Sensible Heat Storagementioning

confidence: 95%

“…However, the CuO nanoparticles, when purchased directly from commercial suppliers, are too costly. Alternatively, these particles can be produced by the evaporation of CuSO 4 •5H 2 O using one-step method [36]. The commercial product of CuO nanoparticles costed £60.5 for 25 grams, whereas the same amount can be produced by evaporation for £6.83, approximately nine times lower cost than the commercial product [36].…”

Section: Economic Analysis Of Tesmentioning

confidence: 99%

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Thermal Energy Storage in Solar Power Plants: A Review of the Materials, Associated Limitations, and Proposed Solutions

Alnaimat

Rashid

2019

Energies

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Solar energy is the most viable and abundant renewable energy source. Its intermittent nature and mismatch between source availability and energy demand, however, are critical issues in its deployment and market penetrability. This problem can be addressed by storing surplus energy during peak sun hours to be used during nighttime for continuous electricity production in concentrated solar power (CSP) plants. This article reviews the thermal energy storage (TES) for CSPs and focuses on detailing the latest advancement in materials for TES systems and advanced thermal fluids for high energy conversion efficiency. Problems of TES systems, such as high temperature corrosion with their proposed solutions, as well as successful implementations are reported. The article also reviews the economic analysis on CSP plants with TES systems and life-cycle assessment to quantify the environmental impacts of different TES systems.

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Section: Materials For Sensible Heat Storagementioning

confidence: 95%

Section: Economic Analysis Of Tesmentioning

confidence: 99%

Thermal Energy Storage in Solar Power Plants: A Review of the Materials, Associated Limitations, and Proposed Solutions

Alnaimat

Rashid

2019

Energies

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“…Also, molten salt was used to produce steam which served as a heat transfer fluid to provide the required heat to the reactors and heat exchangers [28,29,32]. The operating temperature of the molten salt ranges from 290 to 565 ℃ [33] which limits the hydrogen production yield of the plant. Also, the integrated systems were dependent on the grid electricity for the electrolysis step [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Energy and exergy analyses of a solar-based multi-generation energy plant integrated with heat recovery and thermal energy storage systems

Sadeghi

Ghandehariun

Rezaie

2021

Applied Thermal Engineering

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An innovative multigeneration energy system driven by solar energy is proposed in this paper. The integrated model produces electricity, hydrogen, oxygen, and steam for heating purposes. The energy system comprises of pressurized cavity based solar power tower, latent thermal energy storage (TES) unit, unfired gas turbine (GT) unit, regenerative steam Rankine cycle (SRC), copper-chlorine (Cu-Cl) thermochemical cycle, and heat recovery units. By utilization of a high temperature ternary eutectic phase change material (PCM), a dynamic model is developed to deal with the intermittency of the solar energy. Using energy and exergy approaches, the proposed system is investigated to assess exergy destruction rates and the overall system performance. A parametric study is performed to investigate the influence of design parameters such as number of heliostats, pressure ratio of GT, and temperatures of reactions on the system performance. The results showed that the energy system produces electricity, steam, hydrogen, and oxygen at a rate of 41.9 MW, 12.6 kg/s, 0.19 kg/s, and 0.76 kg/s, respectively. Energy and exergy efficiencies of the integrated system are found to be 49.9%, and 44.9%, respectively.

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“…However, the phase change enthalpy reduced for PCM molecules restricted in the material's pores. 25 The most straightforward approach to enhance PCMs' thermal conductivity is to incorporate nanoparticles with high thermal conductivity, such as silver nanoparticles, 26 nickel particles, 27,28 and nano-Al 2 O 3 , 29 into the PCM composites. Nevertheless, this process still represents a challenge because nanoparticles aggregate very easily.…”

Section: Introductionmentioning

confidence: 99%

Enhanced thermal conductivity of copper‐doped polyethylene glycol/urchin‐like porous titanium dioxide phase change materials for thermal energy storage

et al. 2019

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Summary A composite phase change material (PCM) of copper‐doped polyethylene glycol (PEG) 2000 impregnated urchin‐like porous titanium dioxide (TiO2) microspheres (PEG/TiO2) was successfully synthesised. The urchin‐like porous TiO2 structures contain hollow cavities that can provide a high PEG loading capacity of up to 80 wt%. Copper nanoparticles were uniformly dispersed on the outer and inner surfaces of the 0.8PEG/TiO2 as additives to enhance the thermal conductivity of the composite PCM. The latent heat of the Cu/PEG/TiO2 porous composite PCM reached 133.8 J/g, and the thermal conductivity was 0.58 W/(mK), which was 152.2% higher than that of TiO2 and 38.1% higher than 0.8PEG/TiO2. Moreover, the Cu/PEG/TiO2 porous composite PCM has excellent thermal stability and reliability.

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Latent and sensible energy storage enhancement of nano-nitrate molten salt

Cited by 28 publications

References 20 publications

Thermal Energy Storage in Solar Power Plants: A Review of the Materials, Associated Limitations, and Proposed Solutions

Thermal Energy Storage in Solar Power Plants: A Review of the Materials, Associated Limitations, and Proposed Solutions

Energy and exergy analyses of a solar-based multi-generation energy plant integrated with heat recovery and thermal energy storage systems

Enhanced thermal conductivity of copper‐doped polyethylene glycol/urchin‐like porous titanium dioxide phase change materials for thermal energy storage

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