Experimental and numerical analysis of sodium-carbonate salt gradient solar-pond performance under simulated solar-radiation |
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Authors: | Hüseyin Kurt Mehmet Ozkaymak A Korhan Binark |
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Affiliation: | 1. Zonguldak Karaelmas University, Technical Education Faculty, 78200 Karabuk, Turkey;2. Marmara University, Technical Education Faculty, 34722 Kuyubasi-Istanbul, Turkey |
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Abstract: | The objective of this study is to investigate experimentally and theoretically whether sodium carbonate (Na2CO3) salt is suitable for establishing a salinity gradient in a salt-gradient solar-pond (SGSP). For this purpose, a small-scale prismatic solar-pond was constructed. Experiments were conducted in the laboratory under the incident radiation from two halogen-lamps acting as a solar simulator. Furthermore, a one-dimensional transient mathematical model that describes the heat and mass transfer behaviour of the SGSP was developed. The differential equations obtained were solved numerically using a finite-difference method. It was found from the experiments that the density gradient, achieved using sodium carbonate salt, can suppress convection from the bottom to the surface of the pond. |
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Keywords: | Salt-gradient solar-pond Sodium-carbonate Indoor experiment Solar simulator Transient heat-and-mass transfer model |
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