Behaviour of a salinity gradient solar pond during two years and the impact of zonal thickness variation on its performance

Sayer, Asaad H.; Monjezi, Alireza Abbassi; Campbell, Alasdair N.

doi:10.1016/j.applthermaleng.2017.11.116

Cited by 32 publications

(6 citation statements)

References 35 publications

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“…Heat addition from the external source enhances the thermal performance of solar pond in terms of heat recovery and thermal efficiency with certain constraints. Sayer et al [11] investigated the influence of varying the thicknesses of the zones on temperatures change. The temperature of heat storage zone (HSZ) has a considerable impact on the optimal thicknesses of the upper convective zone (UCZ) and the non-convective zone.…”

Section: Introductionmentioning

confidence: 99%

Investigation of saturation temperature in solar pond for different sizes

Soğukpınar

Bozkurt

2020

THERM SCI

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This paper deals with the modelling of solar ponds for different sizes to calculate saturation time and temperature by using discrete ordinates method. The modeled solar pond is a subsoil type and aimed to minimize the heat losses by isolating side wall and ground with foam with the thickness of 10 cm in all cases. In the model, upper convective zone is 10 cm deep and non-convective zone consists of five layer and each layer is 10 cm deep and storage zone depth ranges from 40-400 cm. Therefore, the solar pond totally consists of seven layers. The saturation temperature was found to be about 322 K for 12 different solar pond.

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Section: Introductionmentioning

confidence: 99%

Investigation of saturation temperature in solar pond for different sizes

Soğukpınar

Bozkurt

2020

THERM SCI

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“…They showed that the highest and lowest energy and exergy efficiencies belonged to the solar pond with four collectors and without collector, respectively. Sayer et al [40] examined the zonal thickness variation effect on the lower convective zone (LCZ) and upper convective zone (UCZ) temperature. They revealed that the optimum thicknesses of the non-convective zone (NCZ) and UCZ were about 2 and 0.2 m.…”

Section: Introductionmentioning

confidence: 99%

Determination of optimum insulation thicknesses for salinity gradient solar pond’s bottom wall under different climate conditions

Beiki

Soukhtanlou

2020

SN Appl. Sci.

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The salinity gradient solar pond is one of the most efficient tools that can be used to collect, convert and store the solar energy. The performance of solar pond specially depends on heat losses from it. The performance of the solar pond could be improved by using the thermal insulation on the bottom and sides of the solar pond. Determination of insulation thickness is very important; it is commonly estimated based on the climate conditions, insulation materials and economic parameters. Therefore, in this study, the optimum insulation thickness, cost and energy savings were calculated for a salinity gradient solar pond under different climate conditions. An economic analysis was applied to obtain the optimum value of the insulation thickness when the polyurethane was used as the insulation material. For this purpose, the temperature of the lower layer of the solar pond was calculated using the one-dimensional unsteady heat transfer model inside the pond. The model and the literature experimental lower layer temperatures showed a good agreement, with the average deviation of 5%. They also had the same trend in all months of the year. The results revealed that the optimum insulation thickness strongly depended on the solar irradiance and the ambient temperature. This study also found that by introducing the optimum insulation thickness of 62-122 mm, according to the climate conditions, in the solar pond's bottom wall, the energy saving could be enhanced by 36.7-55.2% as compared with the solar pond without insulation.

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“…Earth's fresh water is distributed unevenly, depends on the seasons and also, geographical region. The Middle East countries are one of the regions which face water scarcity due to the population growth and also a natural cycle of renewable fresh water . The brackish water with high salinity amount is one of the effluent streams which treat the sea and dry ecosystems .…”

Section: Introductionmentioning

confidence: 99%

“…The Middle East countries are one of the regions which face water scarcity due to the population growth and also a natural cycle of renewable fresh water. [1][2][3] The brackish water with high salinity amount is one of the effluent streams which treat the sea and dry ecosystems. 4,5 In other word, the disposal of this concentrated stream makes new concerns for environmental engineers.…”

Section: Introductionmentioning

confidence: 99%

Experimental evaluation of collection, thermal, and conductivity efficiency of a solar distiller pond as a free concentration unit in wastewater treatment process

Farahbod

Omidvar

2018

Energy Science & Engineering

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The performance of one solar pond as a passive step in distilled and potable water production from desalination effluent is surveyed in this research. This solar pond is proposed in a zero discharge desalination process to prevent the salinity shocking which is made by a brackish water stream that exists from desalination units. The solar pond performance is evaluated by measuring three types of efficiency, experimentally, and mathematically. The efficiencies which are defined and calculated from experimental data are conductivity efficiency, thermal efficiency, and water recovery efficiency. The mathematical results are verified by experimental data which has been obtained during a year. The theoretical modelings show very good agreement with experimental data, especially for water collection and conductivity efficiency evaluation. The relative error of theoretical and experimental results for thermal efficiency evaluation through the day and night is obtained 7.2% and 4.9%, respectively.

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Behaviour of a salinity gradient solar pond during two years and the impact of zonal thickness variation on its performance

Cited by 32 publications

References 35 publications

Investigation of saturation temperature in solar pond for different sizes

Investigation of saturation temperature in solar pond for different sizes

Determination of optimum insulation thicknesses for salinity gradient solar pond’s bottom wall under different climate conditions

Experimental evaluation of collection, thermal, and conductivity efficiency of a solar distiller pond as a free concentration unit in wastewater treatment process

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