Conceptual design of porous volumetric solar receiver using molten salt as heat transfer fluid

Du, Shaowu; Sun, Qiuye; He, Ya‐Ling; Shen, Sheng

doi:10.1016/j.apenergy.2021.117400

Cited by 22 publications

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To summarize the major developments conducted in this field, a literature review was conducted and presented in Section 5. pends on the system application. However, the main problem related to the typical solar receivers used in parabolic dish systems is mainly related to high thermal radiation loss on its surface, reducing the efficient power generation at higher temperatures [14]. In order to overcome this issue, two important challenges arise: the improvement of the absorber surface and the enhancement of the heat transfer between the absorber surface and the thermal fluid.…”

Section: Parabolic Dishesmentioning

confidence: 99%

“…However, issues related to non-uniformity of solar flux distribution, pressure drop, and viscous dissipation, induce non-uniform temperatures and affect the exergetic characteristic of the system, leading to a decrease in efficiency [79][80][81]. This complicated flow dynamics also brings a challenging task in the numerical investigation of the fluid flow and heat transfer characteristics for the porous media applied in solar receivers [14,25]. According to [26], the most important characteristics of porous media are porosity and pore size.…”

Section: Solar Receiversmentioning

confidence: 99%

See 1 more Smart Citation

Innovative Solar Concentration Systems and Its Potential Application in Angola

Constantino

Teixeira²,

Teixeira³

et al. 2022

Energies

View full text Add to dashboard Cite

Energy demands have been increasing worldwide, endangering the future supply–demand energy balance. To provide a sustainable solution for future generations and to comply with the international goal to achieve Carbon Neutrality by 2050, renewable energies have been at the top of the international discussions, actively contributing to the energy transition and climatic policies. To achieve the international goal, Angola proposed a long-term strategy that promotes a fair and sustainable development of the national territory by means of improving the electric sector. Among all the renewable resources, solar energy is found to be the most promising solution since it has the second major renewable energy potential in Angola. However, the main problem related to solar energy is the efficiency of the solar systems and the electrical and thermal energy storage. As part of the solution, Concentration Solar Power (CSP) can make a sounder contribution to the transformation of the Angolan energy sector since it enables a significant increase in energy intensity through the concentration of solar energy. Moreover, the large applicability of this technology can contribute to the development of the rural regions which still struggle for energy equity. By considering the potential of CSP, this work presents the status of the Angolan energy sector, and focus is provided on the solar potential of the country. The advantages of the CSP technologies with emphasis on the parabolic dish systems are presented, and the contribution and innovative solutions for the enhancement of thermal efficiency are presented.

show abstract

Section: Parabolic Dishesmentioning

confidence: 99%

Section: Solar Receiversmentioning

confidence: 99%

Innovative Solar Concentration Systems and Its Potential Application in Angola

Constantino

Teixeira²,

Teixeira³

et al. 2022

Energies

View full text Add to dashboard Cite

show abstract

“…Patil et al [13] analyzed the receivers filled with carborundum, cerium oxide, and aluminum oxide metal foam and found that with the same porosity, the heat transfer performance of receiver filled with carborundum was better than those filled with the other two metal foams. Du et al [14] studied a porous volumetric solar receiver with molten salt as the heat transfer fluid. The results showed that the outlet temperature of the porous volumetric solar receiver was 9.6% higher than that of the conventional air porous receiver.…”

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

Experimental study on heat storage and corrosion properties of ternary carbonate salt-based ZnO nanofluids for solar thermal energy storage

Yang

Jiang

et al. 2022

J Therm Anal Calorim

View full text Add to dashboard Cite

Conceptual design of porous volumetric solar receiver using molten salt as heat transfer fluid

Cited by 22 publications

References 37 publications

Innovative Solar Concentration Systems and Its Potential Application in Angola

Innovative Solar Concentration Systems and Its Potential Application in Angola

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

Experimental study on heat storage and corrosion properties of ternary carbonate salt-based ZnO nanofluids for solar thermal energy storage

Contact Info

Product

Resources

About