Optimization of orientation for higher yield of solar still for a given location

Singh, A.K.; Tiwari, G.N.; Sharma, Pratibha; Khan, Emran

doi:10.1016/0196-8904(94)00045-2

Cited by 70 publications

(22 citation statements)

References 4 publications

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“…Thus, one of the gables would cast a shadow on the still base in the morning or afternoon times, except at local solar noon. The effect of shading is significant at low solar altitudes in the morning or afternoon, which accounts for the observed effect of orientation on the optical efficiency of the DSS [12,13].…”

Section: Resultsmentioning

confidence: 91%

“…Generally, β=φ-10 o for summer season (φ>10 o ), β=φ for annual performance and β =φ+10 o for winter season [11]. In addition, a stationary DSS is oriented with the covers facing the east and west directions to optimize solar collection [12,13]. On the other hand, a stationary SSS is commonly mounted facing the Equator for optimum performance.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical Study of the Aspect Ratio of a Solar Still with Double Slopes

Madhlopa

Clarke²

2011

Linköping Electronic Conference Proceedings

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Clean water is essential for good health which influences the social and economic development of any nation. However, there is limited access to safe water on a global scale. This challenge can be overcome through a multi-faceted approach, including the development of appropriate technologies for water treatment and decision-making tools. Solar distillation is one of the commonest non-conventional methods for improving the quality of water. In this vein, the most widely-exploited solar distillation system is a conventional solar still, which has a thin layer of saline water in a shallow basin with a transparent cover over the water and one or two slopes. The productivity of a solar distillation system is influenced by design, climatic and operational factors, with solar radiation being the most influential meteorological parameter. It is therefore necessary to optimize solar radiation that effectively reaches the base of the solar still. Previous attempts have sought to improve the design characteristics of conventional solar stills through the consideration of system geometry and optical properties of construction materials. One of the important geometric parameters is the ratio (R) of length to width (aspect ratio) of the still base. For a single-slope solar still (SSS), R has been examined in preceding studies. Nevertheless, there is a paucity of information on the aspect ratio of a double-slope solar still. In this study, a state-of-the-art software (ESP-r) was used to simulate the variation of effective insolation with R for a double-slope solar still (DSS) in the east-west and north-south orientations and a SSS facing south. Meteorological data captured at the University of Strathclyde (55 o 52′ N, 4 o 15′ W) and Guantanamo Bay (19 o 54′ N, 14 o 51′ E) was employed in this analysis. Simulation results show that the optical performance of a DSS was lower (in both orientations) than that of a SSS at both sites. The DSS collected more solar energy in the eastwest than north-south orientation, for a given value of R. In addition, effective insolation increased with R to an optimum level for both the DSS and SSS. Approximate optimum values of R were 3.0 and 2.0 for the University of Strathclyde and Guantanamo Bay respectively. However, the optimum value of R was not sensitive to the orientation of the DSS at the two sites. Further, the DSS and SSS exhibited the same optimal value of R at a specific site. It appears that R significantly affects solar collection in a DSS.

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Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Theoretical Study of the Aspect Ratio of a Solar Still with Double Slopes

Madhlopa

Clarke²

2011

Linköping Electronic Conference Proceedings

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“…Solar Still [13], Effect of wicks in solar stills, use of multibasin, multieffect solar stills, etc. [14][15][16][17][18][19][20][21][22][23][24], Various materials for Solar Stills and novel designs with different cover shapes , different types of basins, effect of reflectors , etc [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39], hermal analysis and modeling of Solar Stills [40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56].…”

Section: _____________________________ 279mentioning

confidence: 99%

An Experimental Investigation Into the Performance of a Gi Basin Passive Solar Still Using Horizontal Mesh and Vertical Mesh

Shukla¹

2014

IJRET

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“…Also glass is opaque for thermal radiation. For higher latitude places, single slope still is preferable and for northern chemosphere the still faces south [1,5,17,19]. The inclination of the cover is optimized to collect the accumulated condensate through drain before it drops down to basin.…”

Section: Introductionmentioning

confidence: 99%

Performance Investigation on Variations of Glass Cover Thickness on Solar Still: Experimental and Theoretical Analysis

Panchal¹

2016

Technol Econ Smart Grids Sustain Energy

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Glass cover is very important component for the efficient design of the solar still. Sunrays are first incident on glass cover and then transfer to the solar still for the purpose of evaporation of water to get potable water. Selection of the proper glass cover is always based on transmittance and it is depends on thickness of the glass cover. Hence, to study effect of transmittance on glass cover thickness, three different thicknesses of glass cover like 4 mm, 5 mm and 6 mm were chosen for the study on three same sized solar stills and tested in composite climate conditions of Mehsana, a city of North Gujarat, India during sunshine hours of January 2011 to June 2011. Theoretical and experimental analysis of three different thicknesses of glass cover is carried out by heat and mass transfer analysis to determine the optimum thickness of glass cover for the effective distillate output from solar still and validation between them. After six months of experiments, it has found that 4 mm and 5 mm glass cover thickness increased average distillate output of 27 % and 12 % compared with 6 mm glass cover thickness. Also theoretical results found good match with experimental results.

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Optimization of orientation for higher yield of solar still for a given location

Cited by 70 publications

References 4 publications

Theoretical Study of the Aspect Ratio of a Solar Still with Double Slopes

Theoretical Study of the Aspect Ratio of a Solar Still with Double Slopes

An Experimental Investigation Into the Performance of a Gi Basin Passive Solar Still Using Horizontal Mesh and Vertical Mesh

Performance Investigation on Variations of Glass Cover Thickness on Solar Still: Experimental and Theoretical Analysis

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