Soret and Dufour effects on thermosolutal convection developed in a salt gradient solar pond

Rghif, Yassmine; Zeghmati, Belkacem; Bahraoui, Fatima

doi:10.1016/j.ijthermalsci.2020.106760

Cited by 31 publications

(12 citation statements)

References 49 publications

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“…Additionally, September had the greatest daily thermal efficiency value of 30%, while December saw the highest daily electrical efficiency value of 9.357%. Rghif et al [ 19 ] conducted a numerical study of the Dufour and Soret effects on heat and mass transfer inside an SGSP and its storing efficiency in the Tangier (Morocco) climatic circumstances. The impacts of Soret and Dufour on thermosolutal convection are investigated numerically in this research using an SGSP.…”

Section: Introductionmentioning

confidence: 99%

Design and performance analysis of salinity gradient solar pond under different climatic and soil conditions

et al. 2023

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A salinity gradient solar pond (SGSP) is capable of storing a significant quantity of heat for an extended period of time. It is a great option for providing hot water at a reduced energy cost. Additionally, SGSP is used in low-temperature industrial applications such as saltwater desalination, space heating, and power generation. Solar pond thermal performance is dependent on a variety of operational variables, including the soil conditions, the climate of the particular site, the thickness of the solar pond layers, the depth of the water table, and the salt content of the pond. As such, this study examines the thermal performance of a solar pond under a variety of operational conditions. The solar pond model is used to test the thermal performance by simulating two-dimensional heat and mass transport equations. The equations are solved using the finite difference technique utilizing MATLAB® scripts. Salt distributions and temperature profiles are computed for a variety of factors influencing SGSP’s thermal performance. The main distinguishing variables influencing the thermal performance of SGSP are soil conditions, such as soil texture, types, the moisture level in soil, and water table depth. The final findings indicated that the fine sand dry soil performed better than the other soil types owing to its poor heat conductivity. The economic results indicated that the period of return (POR) of the intended system is around 2 years. The solar pond construction costs such as excavation, transportation, salt and lining, were considered based on the local prices. This modeled study extracted the greatest possible energy is 110W/m2, with the fine sand dry at 62.48°C lowest temperature. This study suggested that the climatic conditions of Lahore is better than climatic conditions of Islamabad. Additionally, deeper water tables are suggested for improved thermal performance of the pond.

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Section: Introductionmentioning

confidence: 99%

Design and performance analysis of salinity gradient solar pond under different climatic and soil conditions

et al. 2023

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“…In order to calculate 𝜑 𝑠𝑜𝑙𝑎𝑟,𝑈𝐶𝑍 , 𝜑 𝑁𝐶𝑍/𝑈𝐶𝑍 , 𝜑 𝑟𝑎𝑑 , 𝜑 𝑐𝑜𝑛𝑣 and 𝜑 𝑒𝑣𝑎𝑝 , equations ( 10), ( 11), ( 12), ( 14) and ( 16) are used respectively [11], [15].…”

Section: Transfer Equationsmentioning

confidence: 99%

“…The evaporative heat loss is given, as is expressed in equation ( 16), as a function of the free (𝜑 𝑓𝑟𝑒𝑒 ) and forced (𝜑 𝑓𝑜𝑟𝑐𝑒𝑑 ) convection. They are calculated as follows [11]:…”

Section: Transfer Equationsmentioning

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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“…Many previous studies have concentrated on the thermodynamics of solar ponds with a view to better understanding the heat transfer process [5][6][7][8][9][10][11][12][13][14][15][16]. These studies take into account the intensity of solar radiation to predict the temperature distribution in the solar pond.…”

Section: Introductionmentioning

confidence: 99%

The Effect of a Liquid Cover on the Thermal Performance of a Salinity Gradient Solar Pond: An Experimental Study

Sayer¹,

Al-Dokheily²,

Mahood³

et al. 2022

Energy Engineering

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Soret and Dufour effects on thermosolutal convection developed in a salt gradient solar pond

Cited by 31 publications

References 49 publications

Design and performance analysis of salinity gradient solar pond under different climatic and soil conditions

Design and performance analysis of salinity gradient solar pond under different climatic and soil conditions

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

The Effect of a Liquid Cover on the Thermal Performance of a Salinity Gradient Solar Pond: An Experimental Study

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