Optical design and optimization of parabolic dish solar concentrator with a cavity hybrid receiver

Blazquez, R.; Carballo, Jose A.; Silva, M.

doi:10.1063/1.4949149

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…From the charts above, cavity aperture could reduce total heat loss by up to 800 W and thermal efficiency up to 20%. A study about cavity aperture was conducted by (Kaushika et al, 2000;Blázquez et al, 2016;Reddy et al, 2015;Xiao et al, 2019). They investigated the better shape for the cavity aperture to minimize heat losses.…”

Section: Thermal Analysis Of Receivermentioning

confidence: 99%

Optimizing solar dish performance using analytical flux distribution in focal region

Santoso

Antoko

Ichsani

2020

Int. J. Renew. Energy Dev.

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In this paper, thermal performance analysis of 4 m2 solar dish collector is presented.The focal image characteristics of the solar dish are determined to propose the suitable design of a receiver. A flat plate was used for the receiver to measure flux distribution in the focal region. The measurement had been done in the midday. Intercept factor based on this distribution had been calculated and was obtained to calculate thermal efficiency after total heat loss was described. From the experiment, total heat loss was formed by conductive and radiative in the receiver. The results showed that the increase in total heat loss followed the increase in receiver temperature and it caused a decrease in thermal efficiency. On the peak of the measurement or in midday, receiver temperature can achieve 138°C and it gave around 1200-Watt heat loss and it was dominated by radiative heat loss for around 80%. The thermal efficiency of the system due to flux distribution measurement in the focal region was above 70% and it was classified as high average but we needed to cover this flux up so it did not lose a lot of heat. Cavity aperture would keep around 20% total heat loss and it minimized radiative heat loss from the flux. The design of cavity aperture was the next discussion to insulate thermal heat reflection of the parabolic dish system from high radiative heat loss.©2020. CBIORE-IJRED. All rights reserved

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Section: Thermal Analysis Of Receivermentioning

confidence: 99%

Optimizing solar dish performance using analytical flux distribution in focal region

Santoso

Antoko

Ichsani

2020

Int. J. Renew. Energy Dev.

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“…A full-scale hybrid receiver was then fabricated, demonstrating the possibility of ensuring maximum and continuous electrical output from the system [18]. Within the same project, BIOSTIRLING-4SKA, Blázquez et al performed the optimization of the concentrator geometry and receiver cavity according to the requirements of the flow distribution on the receiver walls set by the hybrid receiver designer [19], and Barbosa et al tested hybridization with syngas produced from biomass [20]. Kang et al experimentally investigated the heat transfer characteristics of the hybrid solar receiver for a concentrated dish system in order to achieve an improvement in energy and economic efficiency [21].…”

Section: Introductionmentioning

confidence: 99%

Energy and Environmental Assessment of a Hybrid Dish-Stirling Concentrating Solar Power Plant

et al. 2022

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Although the 2019 global pandemic slowed the growing trend of CO2 concentrations in the atmosphere, it has since resumed its rise, prompting world leaders to accelerate the generation of electricity from renewable sources. The study presented in this paper is focused on the evaluation of the energy and environmental benefits corresponding to the hypothesis of hybridizing a dish-Stirling plant installed on the university campus of Palermo (Italy). These analyses were carried out by means of dynamic simulations based on an accurate energy model validated with the experimental data collected during the measurement campaign that occurred during the period of operation of the reference plant. Assuming different scenarios for managing the production period and different fuels, including renewable fuels, it was found that the annual electricity production of the dish-Stirling system operating in solar mode can be increased by between 47% and 78% when hybridized. This would correspond to an increase in generation efficiency ranging from 4% to 16%. Finally, assuming that the dish-Stirling system is hybridized with renewable combustible gases, this would result in avoided CO2 emissions of between approximately 1594 and 3953 tons over the 25-year lifetime of the examined plant.

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Hybridization solutions for solar dish systems installed in the Mediterranean region

et al. 2023

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Optical design and optimization of parabolic dish solar concentrator with a cavity hybrid receiver

Cited by 4 publications

References 3 publications

Optimizing solar dish performance using analytical flux distribution in focal region

Optimizing solar dish performance using analytical flux distribution in focal region

Energy and Environmental Assessment of a Hybrid Dish-Stirling Concentrating Solar Power Plant

Hybridization solutions for solar dish systems installed in the Mediterranean region

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