Theoretical analysis of a vertical multiple-effect diffusion solar still coupled with a tilted wick still

Abstract In this study, a combination of vertical multiple-effect diffusion solar still and tilted wick still is proposed and theoretically analyzed. The vertical multiple-effect diffusion still consists of a double glass cover and a number of vertical and parallel partitions in contact with saline-soaked wicks with narrow air gaps between the partitions. The moisture-rich layers of air in the tilted wick still and the multiple-effect still are connected so that the vapor evaporated from the wick of the tilted wick still can be transported to the humid air layer between the inner glass cover and the first partition of the multiple-effect still by natural convection. The latent heat of condensation of the vapor on the front surface of the first partition can be utilized as an added heat source for the multiple-effect still. It was found that solar energy utilized in the multiple-effect still would be adequate year-round. The total daily distillate production was predicted to be about 19.2, 16.0 and 15.9 kg/m2 day on the spring equinox and summer and winter solstices, respectively, when the diffusion gaps between partitions is 5 mm and the number of partitions is 10.

[1]  Hiroshi Tanaka,et al.  Experimental study of vertical multiple-effect diffusion solar still coupled with a flat plate reflector , 2009 .

[2]  Tanongkiat Kiatsiriroat,et al.  Performance analysis of multiple effect vertical still with a flat plate solar collector , 1987 .

[3]  G. N. Tiwari,et al.  Analytical study of multi-effect solar still , 1989 .

[4]  Hiroshi Tanaka,et al.  Outdoor experiments of a vertical diffusion solar still coupled with a flat plate reflector , 2007 .

[5]  R. Ouahes,et al.  A hardy, high-yield solar distiller of brackish water. , 1987 .

[6]  Hiroshi Tanaka,et al.  Parametric investigation of a basin-type-multiple-effect coupled solar still , 2000 .

[7]  Ho-Ming Yeh,et al.  Energy and mass balances in multiple-effect upward solar distillers with air flow through the last-effect unit , 2000 .

[8]  S. Shanmugan,et al.  Wick type solar stills: A review , 2013 .

[9]  X. Berger,et al.  About the equivalent radiative temperature for clear skies , 1984 .

[10]  Hiroshi Tanaka,et al.  Factors influencing the productivity of a multiple-effect diffusion-type solar still coupled with a flat plate reflector , 2005 .

[11]  K. Kalidasa Murugavel,et al.  Progresses in inclined type solar stills , 2013 .

[12]  K. Kalidasa Murugavel,et al.  A review of different methods to enhance the productivity of the multi-effect solar still , 2013 .

[13]  Hiroshi Tanaka,et al.  A highly productive basin-type-multiple-effect coupled solar still , 2000 .

[14]  Moustafa M. Elsayed.  Comparison of Transient Performance Predictions of a Solar-Operated Diffusion-Type Still With a Roof-Type Still , 1983 .

[15]  Hiroshi Tanaka,et al.  Indoor experiments of the vertical multiple-effect diffusion-type solar still coupled with a heat-pipe solar collector , 2005 .

[16]  Hiroshi Tanaka,et al.  A simple and highly productive solar still: a vertical multiple-effect diffusion-type solar still coupled with a flat-plate mirror , 2005 .

[17]  Hiroshi Tanaka,et al.  A new maritime lifesaving multiple-effect solar still design , 2004 .

[18]  Moustafa M. Elsayed,et al.  Performance of multiple effect diffusion stills , 1984 .

[19]  Kamaruzzaman Sopian,et al.  Factors affecting basin type solar still productivity: A detailed review , 2014 .

[20]  Hiroshi Tanaka,et al.  Numerical analysis of the vertical multiple-effect diffusion solar still coupled with a flat plate reflector: optimum reflector angle and optimum orientation of the still at various seasons and locations , 2007 .

[21]  V. Sivakumar,et al.  Improvement techniques of solar still efficiency: A review , 2013 .

[22]  Yasuhito Nakatake,et al.  Parametric study on a vertical multiple-effect diffusion-typesolar still coupled with a heat-pipe solar collector , 2005 .

[23]  Shigeki Toyama,et al.  Dynamic characteristics of a multistage thermal diffusion type solar distillator , 1987 .

[24]  T. Nosoko,et al.  Theoretical analysis of a multiple-effect diffusion still producing highly concentrated seawater , 2005 .

[25]  Hiroshi Tanaka,et al.  Experimental study of basin-type, multiple-effect, diffusion-coupled solar still , 2002 .

[26]  Bachir Bouchekima,et al.  Performance study of the capillary film solar distiller , 1998 .

[27]  A. E. Kabeel,et al.  Review of researches and developments on solar stills , 2011 .

[28]  Tze-Ling Chong,et al.  Spiral multiple-effect diffusion solar still coupled with vacuum-tube collector and heat pipe , 2014 .

[29]  Hiroshi Tanaka,et al.  A vertical multiple-effect diffusion-type solar still coupled with a heat-pipe solar collector , 2004 .

[30]  T. Nagata,et al.  A compact solar still utilizing hydrophobic poly(tetrafluoroethylene) nets for separating neighboring wicks , 1996 .

[31]  K. Srithar,et al.  Performance analysis of solar stills based on various factors affecting the productivity—A review , 2011 .

[32]  Hiroshi Tanaka.  Tilted wick solar still with flat plate bottom reflector , 2011 .

[33]  Hiroshi Tanaka,et al.  Theoretical Analysis of the Effect of a Bottom Reflector on a Vertical Multiple-Effect Diffusion Solar Still Coupled with a Basin-Type Still , 2013 .

[34]  T. A. Lawand,et al.  Extended study of a simplified mathematical model for predicting the nocturnal output of a solar still , 1973 .