Thermal analysis of a finned receiver for a central tower solar system

Piña-Ortiz, A.; Hinojosa, J.; Pérez-Enciso, Ricardo Arturo; Maytorena, V.M.; Calleja, R. A.; Estrada, Claudio A.

doi:10.1016/j.renene.2018.07.123

Cited by 12 publications

(2 citation statements)

References 20 publications

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“…A significant improvement in heat transfer is derived, when the Reynolds number is greater than 25,700. In an investigation conducted by Piña-Ortiz et al, [5], it was revealed that a solar tower receiver fitted with cylindrical internal fins, increases the contact area by 225%.…”

Section: Fig 1 Solar Power Tower Plantmentioning

confidence: 99%

Numerical Study of Heat Transfer Enhancement in A Solar Tower Power Receiver, through the Introduction of Internal Fins

Shatnawi¹,

Lim²,

Ismail³

et al. 2020

ARFMTS

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In the context of solar tower power, the significance of the receiver has to do with its capacity to convert sun rays into heat. This heat is then conveyed to a heat transfer fluid. The extremely high velocity of the heat transfer fluid, motivates for the use of smart geometry to simultaneously enhance the heat transfer process and strengthen the structure of the tubes. In this study, a new molten salt receiver design was numerically investigated, following the addition of square, rectangular, circular and triangular longitudinal fins, that come at various heights (w=1,2,4 and 6 mm). Molten salt was used as the heat transfer fluid that flown through the receiver tubes with the Reynolds number ranging between 14,000 and 38,000. In comparison to a smooth tube, it was observed that while the inclusion of fins led to a dip in pressure, the overall efficiency level was improved. An increase in the number of fins, led to an improvement in the heat transfer process. The use of four square fins delivered the highest heat transfer enhancement. In the use of a singular fin, a triangular fin with a height of 1 mm delivered the best heat transfer performance. For a similar flow rate and hydraulic area, the triangular fins exhibited a better heat transfer performance than the square, circular and rectangular fins. In terms of the receiver's efficiency, the triangular fins produced the heights efficiency.

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Section: Fig 1 Solar Power Tower Plantmentioning

confidence: 99%

Numerical Study of Heat Transfer Enhancement in A Solar Tower Power Receiver, through the Introduction of Internal Fins

Shatnawi¹,

Lim²,

Ismail³

et al. 2020

ARFMTS

View full text Add to dashboard Cite

show abstract

“…Furthermore, there have been few researches on the performance of the receiver with a combined experimental‐numerical method in a concentrated solar power (CSP) system. Piña‐Ortiz et al showed experimental and CFD research on the thermal efficiency of a finned receiver decreased as the incident power increased 16 . However, despite the significant advantages of CFD models, the computational works are so large that it is not practical for general system simulations.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental study of a concentrated solar thermal receiver for a solar heating system with seasonal storage

Wang

et al. 2021

Int J Energy Res

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Summary Solar heating systems are promising, reliable solutions for meeting heating demands, and reducing greenhouse gas emissions. Due to the temporal fluctuations of solar energy and the mismatch between solar energy availability and heating loads, the application of seasonal thermal storage for solar space heating has drawn much attention. Due to the significant reduction of the collection efficiency of flat plate collectors in the temperature range of 70‐95°C, the expansion of the application of concentrated solar thermal (CST) systems has aroused a strong interest. This study describes a demonstration project with a CST receiver designed for a solar heating system with seasonal storage. This work is to reveal the performance of the receiver in the middle and low‐temperature operation through experimental‐numerical approach using a one‐dimensional transient model with a non‐uniform flux distribution. The simulation results agreed well with experimental data for various operating conditions. The receiver had a collection efficiency of about 82% on a typical day. Meanwhile, the heat losses were mainly reflection losses followed by convection (about 5.6%) and radiation (about 2.1%). Additionally, the model was also used to investigate the effect of various operating parameters such as the inlet temperature, outlet temperature, and incident power on the collection efficiency and heat losses. Ultimately, the developed model and on‐site operating data are valuable for broadening the applications of CST receivers and further system simulation and optimization.

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Multiphase simulation and parametric study of direct vapor generation for a solar organic Rankine Cycle

Maytorena

Buentello-Montoya

2022

Applied Thermal Engineering

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Thermal analysis of a finned receiver for a central tower solar system

Cited by 12 publications

References 20 publications

Numerical Study of Heat Transfer Enhancement in A Solar Tower Power Receiver, through the Introduction of Internal Fins

Numerical Study of Heat Transfer Enhancement in A Solar Tower Power Receiver, through the Introduction of Internal Fins

Numerical and experimental study of a concentrated solar thermal receiver for a solar heating system with seasonal storage

Multiphase simulation and parametric study of direct vapor generation for a solar organic Rankine Cycle

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