Performance investigation of salt gradient cylindrical solar pond integrated and nonintegrated with evacuated tube solar collectors

Atız, Ayhan; Bozkurt, İsmail; Karakılçık, Mehmet

doi:10.1002/er.4304

Cited by 5 publications

(3 citation statements)

References 22 publications

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“…The performance of the SPs was calculated and compared. Atiz et al 18 investigated the effect of using evacuated tube solar collectors as a supplemental heat source on the thermal performance of SP. The energetic and exergetic performances were calculated which is dependent on the number of collectors by using experimental data.…”

Section: Introductionmentioning

confidence: 99%

The investigation of heat storage efficiency of salt gradient solar pond with and without phase changing materials

Soğukpınar

Bozkurt

Genç

et al. 2023

Env Prog and Sustain Energy

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In this work, the effect of with and without phase change materials for long‐term heat storage of a salt gradient solar pond was investigated both experimentally and numerically. Some phase change materials, whose thermal values are close to the operating temperature of the solar pond were selected and examined from fatty acids (camphene, decanoic acid, and palmitic acids) and paraffin derivatives (paraffin wax, C20‐C33, and C16‐C28). A series of experimental studies were then performed with phase change temperature, latent heat and thermal stability, a differential scanning calorimetry, and a thermogravimetric analyzer for sheath, decanoic acid, and palmitic acid. The temperature and enthalpy curve of each phase change material was calculated by months and compared to the solar pond and the longest‐term heat storage was determined. Study shows that the maximum efficiency of the solar pond can be achieved with 24.58% Camphene in November and 22.57% Paraffin C20‐C33 in December. Thus, the camphene shows the best longest‐term heat storage performance thanks to its high melting temperature and density and latent fusion heat. It is one of the best suitable options to improve the heat storage performance of solar ponds.

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Section: Introductionmentioning

confidence: 99%

The investigation of heat storage efficiency of salt gradient solar pond with and without phase changing materials

Soğukpınar

Bozkurt

Genç

et al. 2023

Env Prog and Sustain Energy

Self Cite

View full text Add to dashboard Cite

show abstract

“…Similarly, using solar pond extracted heat for ejector refrigeration cycle coupled with a thermoelectric generator, cooling production was carried out, showing that under optimum conditions, the energy and exergy efficiencies were about 28.26% and 29.95%, respectively [36]. Atiz et al [7] investigated the energy and exergy of a cylindrical solar pond that integrated and nonintegrated with solar collectors. They showed that the highest and lowest energy and exergy efficiencies belonged to the solar pond with four collectors and without collector, respectively.…”

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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“…The optimum operating temperature of the solar pond with the addition of external heat is ranged (from 70 C to 80 C). Also, Atiz et al 28 studied the variables that affect the thermal performance of a solar pond using solar collectors. Bozkurt and Karakilcik 29,30 presented a thermal analysis of the energy productivity of a solar pond combined with collectors.…”

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confidence: 99%

Performance of floating photovoltaic/thermal system: Experimental assessment

Aweid

Ahmed

Algburi³

2022

Intl J of Energy Research

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Summary An unfamiliar design of photovoltaic (PV)/solar pond was presented in the article. This design integrated the floating PV panel technology with the solar pond technology. This new design is called the Floating Photovoltaic Solar Pond (FPVSP). The design aims to reduce water evaporation from water bodies, cool solar panels, and store solar energy in the pond. To assess the effectiveness of the innovative system, two experimental models were built for this purpose. The first model includes the PV/thermal collector floating upon the pond and the second model is a solar panel with the same specifications of the solar panel for the first model. The outcomes confirmed that the presence of the glass cover increases the overall efficiency of the system, the temperature of the floating solar panel, and the average water temperature of the solar pond. Also, the glass cover reduces the electrical efficiency of the solar panel. The increase in the depth of the pond slightly affected the solar panel temperature for the glazed and un‐glazed systems and decreased the water temperature of the solar pond. On the other hand, increasing the depth of the pond rises the electrical generation from the solar panels. The angle of inclination of the floating solar panel over the pond was an influential factor in determining the electric power produced. Finally, the proposed system recorded a high energy efficiency of 49% compared to the efficiency of the classical solar ponds, which does not exceed 20%.

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Performance investigation of salt gradient cylindrical solar pond integrated and nonintegrated with evacuated tube solar collectors

Cited by 5 publications

References 22 publications

The investigation of heat storage efficiency of salt gradient solar pond with and without phase changing materials

The investigation of heat storage efficiency of salt gradient solar pond with and without phase changing materials

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

Performance of floating photovoltaic/thermal system: Experimental assessment

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