Molten Salt: Concept Definition and Capital Cost Estimate

Stoddard, L.E.; Andrew, Daniel; Adams, S.; Galluzzo, Geoff

doi:10.2172/1335150

Cited by 9 publications

(3 citation statements)

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“…Since the MSOT from the solar receiver is 670 °C, conventional nitrate-based molten salts are not stable. The NREL 10MWe demonstration plant considered MgCl2-KCl (Mole: 32%-68%) in order to achieve these higher operating temperatures [8,9] and the same salt is therefore selected as both HTF and storage medium for this study.…”

Section: Temperature-entropy (T-s) Diagram Of Recompression Brayton Cycle (The Dashed Grey Lines Are the Isobaric Lines Of Co2 The Continmentioning

confidence: 99%

“…Demonstration facilities and pilot plants have been built in recent years for testing the performance and reliability of sCO2 plants. National Renewable Energy Laboratory (NREL), USA tested a 520 kWth pilot plant [7] and is building a scale-up facility of 10 MWe [8], which is designed to operate at 715.9 °C turbine inlet temperature [8,9]. As far as commercial applications are concerned, Echogen ® has commercialised a packaged unit for Waste Heat Recovery (WHR) applications [10].…”

Section: Introductionmentioning

confidence: 99%

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Off-design and annual performance analysis of supercritical carbon dioxide cycle with thermal storage for CSP application

et al. 2021

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Section: Temperature-entropy (T-s) Diagram Of Recompression Brayton Cycle (The Dashed Grey Lines Are the Isobaric Lines Of Co2 The Continmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Off-design and annual performance analysis of supercritical carbon dioxide cycle with thermal storage for CSP application

et al. 2021

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“…For higher temperature conditions, solid particles are an attractive storage option because the stable, low-cost particles can work at temperatures above 1000 °C and can store the energy in hot particles at relatively low storage containment cost [2]. According to Black & Veatch reports to the DOE, a particle-based storage system can enable high-temperature and high power cycle efficiency (>50%) at a lower cost than the liquid HTFs with readily available materials [3,4]. The allowable temperature range for particles matches well with the supercritical carbon dioxide (sCO 2 ) Brayton power cycle suitable for CSP applications.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Fluidized-Bed Particle/Supercritical-CO2 Heat Exchanger in a Concentrating Solar Power System

Martinek

2020

Journal of Solar Energy Engineering

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Concentrating solar power (CSP) development has focused on increasing the energy conversion efficiency and lowering the capital cost. To improve performance, CSP research is moving to high-temperature and high-efficiency designs. One technology approach is to use inexpensive, high-temperature heat-transfer fluids and storage, integrated with a high-efficiency power cycle such as the supercritical carbon dioxide (sCO2) Brayton power cycle. The s-CO2 Brayton power cycle has strong potential to achieve performance targets of 50% thermal-to-electric efficiency and dry cooling at an ambient temperature of up to 40°C, and to reduce the cost of power generation. Solid particles have been proposed as a possible high-temperature heat-transfer or storage medium that is inexpensive and stable at high temperatures above 1,000°C. The particle/sCO2 heat exchanger (HX) provides a connection between the particles and sCO2 fluid in emerging sCO2 power cycles. This paper presents heat-transfer modeling to analyze the particle/sCO2 HX design and assess design tradeoffs including the HX cost. The heat-transfer process was modeled based on a particle/sCO2 counterflow configuration, and empirical heat-transfer correlations for the fluidized bed and sCO2 were used to calculate heat-transfer area and estimate HX cost. A computational fluid-dynamics simulation was applied to characterize particle distribution and fluidization. The paper shows a path to achieve the cost and performance objectives for a particle/sCO2 HX design by using fluidized-bed technology.

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Liquid-based high-temperature receiver technologies for next-generation concentrating solar power: A review of challenges and potential solutions

Wang

Jiang

et al. 2023

Front. Energy

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Molten Salt: Concept Definition and Capital Cost Estimate

Cited by 9 publications

References 0 publications

Off-design and annual performance analysis of supercritical carbon dioxide cycle with thermal storage for CSP application

Off-design and annual performance analysis of supercritical carbon dioxide cycle with thermal storage for CSP application

Analysis of a Fluidized-Bed Particle/Supercritical-CO2 Heat Exchanger in a Concentrating Solar Power System

Liquid-based high-temperature receiver technologies for next-generation concentrating solar power: A review of challenges and potential solutions

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