Transient thermal performances of a salt gradient solar pond under semi-arid Moroccan climate using a 2D double-diffusive convection model

Mansouri, A. El; Hasnaoui, M.; Bennacer, Rachid; Amahmid, A.

doi:10.1016/j.enconman.2017.08.093

Cited by 25 publications

(5 citation statements)

References 34 publications

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“…In addition, the SGSP daily efficiency varies from 25.6% to 36.5%. Based on these results, the authors confirm the feasibility of SGSP in the semi-arid climate of North Africa [8]. On the other hand, the same authors demonstrated, in another numerical study [9], that the storage zone temperature increases every day by around 5 °C [9].…”

Section: Introductionsupporting

confidence: 61%

“…Nevertheless, El Mansouri et al [7] demonstrated that extracting heat using horizontal and vertical tubes in LCZ and NCZ, respectively, provides better energy and exergy efficiency. In 2017, the El Mansouri et al study [8] was the first SGSP study conducted by Moroccan researches. It involves the development of a 2D numerical model to quantitatively and qualitatively investigate the thermal characteristics of a small SGSP operating in a semi-arid Moroccan climate (Marrakech).…”

Section: Introductionmentioning

confidence: 99%

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Numerical investigation of solar energy storage by a salt gradient solar pond in several Moroccan cities

2022

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Numerical investigation of solar energy storage by a Salt Gradient Solar Pond (SGSP) in several Moroccan cities (Marrakesh, Ouarzazate, Tangier and Ifrane) is presented in this paper. For this purpose, the SGSP considered is assimilated to an open parallelipedic cavity in which the vertical and bottom walls are thermally insulated. The one-dimensional numerical model developed in Python programming language is based on the energy balance of each SGSP zone in which the heat losses via the SGSP free surface are retained. The numerical results obtained from the model developed are satisfactorily compared and validated against those obtained experimentally and numerically from a literature study. According to the results of one year of the SGSP operation, the storage zone temperature and the energy stored in the SGSP located in Ouarzazate city are the highest and reach maximum values in July (about 128 °C and 146 MJ respectively). Moreover, comparisons between different mass flow rates (0.01 Kg/s, 0.05 Kg/s and 0.09 Kg/s) of heat exchanger placed in the storage zone show that the optimal one is 0.09 Kg/s as it ensures the maximum energy extraction.

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Section: Introductionsupporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Numerical investigation of solar energy storage by a salt gradient solar pond in several Moroccan cities

2022

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“…In 2014, Giestas et al developed a comprehensive numerical model to simulate the SGSP dynamics [117] , Boudhiaf and Baccar analyzed the complex velocity, temperature, and concentration distributions of the transient flow structure [118] and Suárez et al compared temperature sensing observations from a small-scale SGSP experiment to numerical simulations of a full-scale SGSP [28] . El-Mansouri et al developed a 2D numerical model to simulate a small-scale SGSP, which combines different physical phenomena [119] . Sayer et al estimated the evolution of the convective zone concentrations over time in ponds with vertical and inclined walls, and of different volumes [120] .…”

Section: Stability and Double-diffusivity Studiesmentioning

confidence: 99%

Salinity-gradient solar pond: History and progress review

Sleiman,

Vaerenbergh,

Hamieh

2023

Therm. Sci. Eng.

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A salinity gradient solar pond (SGSP) is a large and deep artificial basin of layered brine, which collects and stores-simultaneously-solar energy for use in various applications. Experimental and theoretical studies have been launched to understand the thermal behavior of SGSPs, under different operating conditions. This article then traces the history of SGSPs, from their natural discovery to their current artificial applications and the progress of studies and research, according to their chronological sequence, in terms of determining their physical and dynamic aspects, their operation, management and maintenance. It has extensively covered the theoretical and experimental studies, as well as the direct and laboratory applications of this technology, especially the most famous and influential in this field, classified according to the aspect covered by the study, with a comparison between the different results obtained. In addition, it highlighted the latest methods to improve the performance of an SGSP and facilitate its operation, such as the use of a magnetic field and the adoption of remote data acquisition, in the aim of expanding research and enhancing the benefit of this technology.

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“…Compared with the brine in a solar pond, biogas slurry has small solid particles, including insoluble metabolites and substrate residue, which lead to a strong scattering effect for sunlight. The previous studies show that particle scattering has a significant effect on the regenerative process of direct-absorption solar thermal energy systems [ 14 , 15 ]. Bhalla et al [ 14 ] investigated the effect of nanoparticles (Al 2 O 3 /Co 3 O 4 ) on the photo-thermal process of a direct-absorption solar thermal collector and concluded that temperature increases in the collector when the media is filled with nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…The previous studies show that particle scattering has a significant effect on the regenerative process of direct-absorption solar thermal energy systems [ 14 , 15 ]. Bhalla et al [ 14 ] investigated the effect of nanoparticles (Al 2 O 3 /Co 3 O 4 ) on the photo-thermal process of a direct-absorption solar thermal collector and concluded that temperature increases in the collector when the media is filled with nanoparticles. So, the effect of particle scattering on the coupled heat and mass transfer process of a direct-absorption methane digester should be investigated.…”

Section: Introductionmentioning

confidence: 99%

Effect of Phase Change Materials and Phase Change Temperature on Optimization of Design Parameters of Anaerobic Reactor Thermal Insulation Structure

Zhang

Pang

Tong

et al. 2022

IJERPH

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Direct-absorption anaerobic reactors can maintain the fermentation process of microorganisms by utilizing solar absorption and scattering media in the biogas reactor to improve the slurry temperature. Direct-absorption heating alone can save the corresponding electric energy and ensure the normal fermentation process of the biogas slurry in the reactor, but there is still the problem of temperature fluctuation. In order to improve the stability of the fermentation process, it is proposed to optimize the design of this kind of reactor by adding paraffin phase change material. This article mainly studies the influence of paraffin phase change material added on the top and side of the reactor in the fermentation process and gives the corresponding design parameters for different climatic conditions, which lays a theoretical reference for the design process of this kind of reactor.

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Transient thermal performances of a salt gradient solar pond under semi-arid Moroccan climate using a 2D double-diffusive convection model

Cited by 25 publications

References 34 publications

Numerical investigation of solar energy storage by a salt gradient solar pond in several Moroccan cities

Numerical investigation of solar energy storage by a salt gradient solar pond in several Moroccan cities

Salinity-gradient solar pond: History and progress review

Effect of Phase Change Materials and Phase Change Temperature on Optimization of Design Parameters of Anaerobic Reactor Thermal Insulation Structure

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