Experimental investigation of modified solar still integrated with solar collector
| Autor: | S. E. Shcheklein, Obed M. Ali, Naseer T. Alwan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
HOLLOW CYLINDERS
020209 energy WATER FILM Evaporation 02 engineering and technology SOLAR HEATING SOLAR STILLS Solar still Boundary layer thickness 01 natural sciences MODIFIED SOLAR STILL SOLAR COLLECTOR ROTATIONAL SPEED 0202 electrical engineering electronic engineering information engineering WATER Engineering (miscellaneous) Productivity Fluid Flow and Transfer Processes Hollow cylinder BOUNDARY LAYER FLOW PRODUCTIVITY BOUNDARY LAYER THICKNESS DISTILLATION TRADITIONAL SOLAR STILL Environmental engineering Rotational speed SURFACE AREA BOUNDARY LAYERS 010406 physical chemistry 0104 chemical sciences FRESHWATER WATER PRODUCTIVITY lcsh:TA1-2040 ESTIMATED COSTS Environmental science CYLINDERS (SHAPES) Stage (hydrology) EXPERIMENTAL INVESTIGATIONS lcsh:Engineering (General). Civil engineering (General) SATELLITES SOLAR COLLECTORS |
| Zdroj: | Case Studies in Thermal Engineering Case Studies in Thermal Engineering, Vol 19, Iss, Pp-(2020) |
| Popis: | The limited productivity of traditional solar still considers as one of the most prominent obstacles to their implementation. Thus, the main objective of this study is to improve traditional solar still (TSS) productivity in two successive stages. In the first stage, a rotating hollow cylinder is used within the solar still to increase the surface area of evaporation and reduce the boundary layer thickness of untreated water film. Three rotational speeds have been tested (0.5, 1 and 3 rpm). The second stage included the integration of an external solar collector with the modified solar still (MSS) to raise the basin saltwater temperature. From the analysis of experimental results, it is observed that the productivity increased with decreasing rotational speed of a hollow cylinder and the maximum value obtained at the lower speed (0.5 rpm). Furthermore, integrating outer solar collector results in further enhancement, where the productivity of freshwater observed to be 5.5 L/m2 for MSS compared to 1.4 L/m2 from TSS. Accordingly, the productivity enhanced by 292% at an estimated cost to produce 1 L of freshwater of 0.048 $ and 0.049 $ from MSS and TSS respectively. Keywords: Modified solar still, Traditional solar still, Solar collector, Freshwater water productivity |
| Databáze: | OpenAIRE |
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