Optimization of volumetric solar receiver geometry and porous media specifications

Godini, Ali; Kheradmand, Saeid

doi:10.1016/j.renene.2021.03.040

Cited by 20 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Receivers are the solar radiation collecting elements in CST power plants. Several receiver models are existing in the literature [21,22,23] and ETH's receiver model [24] is replicated in this study. The main purpose of the article is to fill the gap in component design in CST technology, especially in multiple operating conditions, and represent the results for proving that surrogate modeling is an efficient way of finding the optimum solution in complex design problems.…”

Section: List Of Symbolsmentioning

confidence: 98%

Geometric Design of Micro Scale Volumetric Receiver Using System-Level Inputs: An Application of Surrogate-Based Approach

Akba¹,

Baker²,

Mengüç³

2022

Preprint

View full text Add to dashboard Cite

Concentrating solar thermal power is an emerging renewable technology with accessible storage options to generate electricity when required. Central receiver systems or solar towers have the highest commercial potential in largescale power plants because of reaching the highest temperature. With the increasing solar chemistry applications and new solar thermal power plants, various receiver designs require in micro or macro-scale, in materials, and temperature limits. The purpose of the article is computing the geometry of the receiver in various conditions and provide information during the conceptual design. This paper proposes a surrogate-based design optimization for a micro-scale volumetric receiver model in the literature. The study includes creating training data using the Latin Hypercube method, training five different surrogate models, surrogate model validation, selection procedure, and surrogate-based design optimization. Selected surrogates have over 98% R 2 fit and less than 4% root mean square error. In final step, optimization performance compared with the base model. Because of the model complexity, surrogate models reached better objective values in a significantly shorter time.

show abstract

Section: List Of Symbolsmentioning

confidence: 98%

Geometric Design of Micro Scale Volumetric Receiver Using System-Level Inputs: An Application of Surrogate-Based Approach

Akba¹,

Baker²,

Mengüç³

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Barreto et al [23] optimized the porosity, porous diameter, and flow velocity to promote the efficiency of porous volumetric solar receiver. Godini and Kheradmand [24] selected the average cell diameter, the porosity, the absorber diameter, and the distance of glass window from the absorber surface as the optimized parameters and performed a parametric and optimization study to minimize the pressure drop in the receiver while maximizing the output temperature by experimental design method. Huang and Lin [25] investigated the effects of porous structure and materials on the solar thermal conversion.…”

Section: Introductionmentioning

confidence: 99%

Analysis on the Effects of Different Receiver Structures and Porous Parameters on the Volumetric Effects and Heat Transfer Performance of Porous Volumetric Solar Receiver

Xie

Yao

et al. 2023

International Journal of Energy Research

View full text Add to dashboard Cite

The volumetric solar receiver is an important heat transfer component of the concentrated solar power (CSP) system. Moreover, in order to improve the absorption of concentrated solar radiation, the porous media are widely used in volumetric solar receiver. In recent years, many studies were concerned with the effects of porosity, pore number density and size, Reynolds number, and Darcy number on heat and flow performance in volumetric solar receiver. However, there are few studies on the effects of structure type and geometric parameters on the volumetric effects and the radiation characteristics of a porous volumetric solar receiver with nonuniform heat flux boundary condition. In this contribution, in order to analyze the effects of structures on the volumetric effects and heat transfer performance, we design six types of porous volumetric receiver structures, whereas the volume of different structures keeps consistent. Then, we apply the local non-thermal-equilibrium model and also consider the effect of structure shape on the concentrating solar radiation transport characteristic. Furthermore, we apply the Gaussian distribution model (GDM) to simulate the actual nonuniform heat flux boundary condition. The result shows that drum-type structure (RT-III) has the best heat transfer performance among the six structures; e.g., the outlet average temperature of fluid is up to 851 K when the pore size and porosity of porous media are 2 mm and 0.7, respectively, which is 41 K increased than the scaled cone-type structure. In addition, the pore diameter has less influence on the outlet temperature of fluid, but it has greater influence on the pressure drop. The contribution can provide a reference for this type of solar receiver design and reconstruction.

show abstract

“…Energies 2022, 15, 3899 2 of 12 Numerous studies have presented numerical simulations of volumetric solar receivers aiming at achieving volumetric effect [8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Natividade et al [10] investigated the effects of thermal conductivity, porosity, and fluid mass flow of porous media on the solar thermal conversion efficiency of a volumetric receiver.…”

Section: Introductionmentioning

confidence: 99%

Effects of Volumetric Property Models on the Efficiency of a Porous Volumetric Solar Receiver

Liu

2022

Energies

View full text Add to dashboard Cite

A porous volumetric receiver is the key component in concentrated solar power systems. In this paper, we investigate the effects of volumetric parameter models on the heat collection efficiency of the volumetric receiver by numerical simulations with the combination of local thermal non-equilibrium and discrete ordinate methods. Seven volumetric convective heat transfer coefficient models and three extinction coefficient models were investigated. The efficiencies calculated using these models were compared among each other. The results show that volumetric convective heat transfer coefficient models have significant effects with a maximum difference of 27.7% in receiver efficiency for these models. Extinction coefficient models have less effects on receiver efficiency with a maximum difference of 7.3%.

show abstract

Optimization of volumetric solar receiver geometry and porous media specifications

Cited by 20 publications

References 39 publications

Geometric Design of Micro Scale Volumetric Receiver Using System-Level Inputs: An Application of Surrogate-Based Approach

Geometric Design of Micro Scale Volumetric Receiver Using System-Level Inputs: An Application of Surrogate-Based Approach

Analysis on the Effects of Different Receiver Structures and Porous Parameters on the Volumetric Effects and Heat Transfer Performance of Porous Volumetric Solar Receiver

Effects of Volumetric Property Models on the Efficiency of a Porous Volumetric Solar Receiver

Contact Info

Product

Resources

About