Heliostat field layout optimization for high-temperature solar thermochemical processing

Pitz‐Paal, Robert; Botero, Nicolas Bayer; Steinfeld, Aldo

doi:10.1016/j.solener.2010.11.018

Cited by 123 publications

(56 citation statements)

References 10 publications

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“…However, it should be borne in mind that the type of geometry used in the construction of the reflective surface of a heliostat has a significant influence on the shape and size of the image generated in the plane of the receiver, and therefore on the energy density and the amount of energy intercepted by this element [42].…”

Section: Discussionmentioning

confidence: 99%

Solar Tower Power Plants of Molten Salt External Receivers in Algeria: Analysis of Direct Normal Irradiation on Performance

Rouibah

Benazzouz

Kouider³

et al. 2018

Applied Sciences

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Abstract:The increase of solar energy production has become a solution to meet the demand of electricity and reduce the greenhouse effect worldwide. This paper aims to determine the performance and viability of direct normal irradiation of three solar tower power plants in Algeria, to be installed in the highlands and the Sahara (Béchar, El Oued, and Djelfa regions). The performance of the plants was obtained through a system advisor model simulator. It used real data gathered from appropriate meteorological files. A relationship between the solar multiple (SM), power generation, and thermal energy storage (TES) hours was observed. The results showed that the optimal heliostat field corresponds to 1.8 SM and 2 TES hours in Béchar, 1.2 SM and 2 TES hours for El Oued, and 1.5 SM and 4 TES hours for Djelfa. This study shows that there is an interesting relationship between the solar multiple, power generation, and storage capacity.

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Section: Discussionmentioning

confidence: 99%

Solar Tower Power Plants of Molten Salt External Receivers in Algeria: Analysis of Direct Normal Irradiation on Performance

Rouibah

Benazzouz

Kouider³

et al. 2018

Applied Sciences

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“…It seems clear that global optimization methods are a suitable solution to investigate this kind of issue. Other work on SPT optimization has already analysed this possibility (Pitz-Paal et al, 2011), (Ramos and Ramos, 2012), (Carrizosa et al, 2015). This Monte Carlo based direct model is then coupled with a particle swarm optimizer (PSO) in order to achieve SPT optimal design.…”

Section: • the Height Of The Tower H Tmentioning

confidence: 99%

“…Heliostat fields have been widely researched since the 1970's, with several studies particularly dedicated to the optimization of this subsystem. Among the most recent developments, some interesting articles can be mentionned: (Pitz-Paal et al, 2011), (Carrizosa et al, 2015), (Wei et al, 2007), (Zhang et al, 2016) and (Ramos and Ramos, 2012) focuse on SPT optimization notably with global optimization methods ; (Noone et al, 2012), (Yao et al, 2015) and (Zhang et al, 2016) introduce innovative pattern for heliostat layout (in particular phyllotactic spiral) ; (Sánchez and Romero, 2006) propose a new quantity (yearly normalized energy surfaces) as the reference criterion for heliostat field generation. All the above-mentioned articles are based either on a computation of the power collected at one or more specifically chosen periods of the year, considered to be representative of the central receiver's overall performance, or on an approximation of the yearly performance of the solar plant, obtained by making significant assumptions.…”

Section: Introductionmentioning

confidence: 99%

Global optimization of solar power tower systems using a Monte Carlo algorithm: Application to a redesign of the PS10 solar thermal power plant

2018

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There is a need to enhance the performance of Solar Power Tower (SPT) systems in view of their significant capital costs. In this context, the preliminary design step is of great interest as improvements here can reduce the global cost. This paper presents an optimization method that approaches optimal SPT system design through the coupling of a Particle Swarm Optimization algorithm and a Monte Carlo algorithm, in order to assess both the yearly heliostat field optical efficiency and the thermal energy collected annually by an SPT system. This global optimization approach is then validated on a wellknown SPT system, ie the PS10 Solar Thermal Power plant. First, the direct model is compared to in-situ measurements and simulation results. Then, the PS10 heliostat field is redesigned using the optimization tool. This redesign step leads to an annual gain between 3.34 % and 23.5 % in terms of the thermal energy collected and up to about 9 % in terms of the heliostat field optical efficiency from case to case.

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“…In order to get a suitable concentration ratio at the receiver aperture, a secondary concentrator is placed to increase the flux density of the radiation. A compound parabolic concentrator (CPC) has demonstrated high performance in this kind of processes (Pitz-Paal et al, 2011). Gallagher and Winston, 1983).…”

Section: System Descriptionmentioning

confidence: 99%

Annual Performance of a Solar-Thermochemical Hydrogen Production Plant Based on CeO2 Redox Cycle

Calle

2017

Linköping Electronic Conference Proceedings

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For the first time, a dynamic model of a 1-MW th thermochemical hydrogen production plant is developed and implemented for CeO 2 redox cycle. The work explores how the variables of the process like the direct normal irradiation (DNI), temperature, pressure and degree of oxidation affect the annual production of hydrogen. The model reveals that the thermal inertia of CeO 2 is significantly high to accomplish the oxidation without refrigerate the oxidizer. The operation is optimized to obtain the maximum amount of hydrogen in a year by only modifying the mass flow rates at the inlet of the reactors. The flexibility and adaptability of the model allows to test different system configurations and optimize the hydrogen production.

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Heliostat field layout optimization for high-temperature solar thermochemical processing

Cited by 123 publications

References 10 publications

Solar Tower Power Plants of Molten Salt External Receivers in Algeria: Analysis of Direct Normal Irradiation on Performance

Solar Tower Power Plants of Molten Salt External Receivers in Algeria: Analysis of Direct Normal Irradiation on Performance

Global optimization of solar power tower systems using a Monte Carlo algorithm: Application to a redesign of the PS10 solar thermal power plant

Annual Performance of a Solar-Thermochemical Hydrogen Production Plant Based on CeO2 Redox Cycle

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