Performance evaluation of a solar still in the Eastern Province of Saudi Arabia—an improved analysis

The performance of a solar still is predicted though an improved and updated mathematical model. The model is based on classical energy balance equations; however, variable properties were considered in addition to a more reliable correlation for convection heat transfer from the seawater surface and the still glass cover. The effect of density variation within the solar still due to water vapor concentration difference is taken into consideration through a modified expression of the temperature difference (ΔT') and a more reliable expression for the heat transfer coefficient within the still that was developed for tilted covers. The performance of the still is validated against the published experimental values. In addition, the (distillate) productivity was reported for two days that represent both summer and winter conditions in Dhahran, Saudi Arabia. A parametric study was performed to identify the effect of the most influential parameters on the still performance. In addition, a sensitivity analysis ...

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

[2]  Vassilis Belessiotis,et al.  Experimental investigation of a solar still coupled with solar collectors , 2001 .

[3]  Kotaro Tanaka,et al.  Performance of solar stills , 1981 .

[4]  W. Beckman,et al.  Solar Engineering of Thermal Processes , 1985 .

[5]  G. N. Tiwari,et al.  Optimization of number of effects for higher yield from an inverted absorber solar still using the Runge-Kutta method , 1998 .

[6]  Zeinab S. Abdel-Rehim,et al.  Experimental and theoretical study of a solar desalination system located in Cairo, Egypt , 2007 .

[7]  Y. P. Yadav,et al.  Parametric investigations on a basin type solar still , 1991 .

[8]  Nabil Hussain A. Rahim,et al.  Utilisation of new technique to improve the efficiency of horizontal solar desalination still , 2001 .

[9]  S. Satcunanathan,et al.  An investigation of some of the parameters involved in solar distillation , 1973 .

[10]  Badawi W. Tleimat,et al.  Nocturnal production of solar distillers , 1966 .

[11]  M. Naim,et al.  Non-conventional solar stills Part 2. Non-conventional solar stills with energy storage element , 2003 .

[12]  G. N. Tiwari.  Demonstration plant of a multi wick solar still , 1984 .

[13]  S. C. Mullick,et al.  Calculation of Hourly Output of a Solar Still , 1993 .

[14]  R. Viskanta,et al.  Journal of Heat Transfer Policy on Reporting Uncertainties in Experimental Measurements and Results , 1993 .

[15]  W. E. Alnaser,et al.  Performances of single and double basin solar-stills , 2004 .

[16]  Y. P. Yadav,et al.  Transient analytical solution of a solar still integrated with a tubular solar energy collector , 1998 .

[17]  Hassan E.S. Fath,et al.  Thermal performance of greenhouses with a built-in solar distillation system: experimental study , 2005 .

[18]  D. Inan,et al.  A solar still with minimum inclination, coupled to an outside condenser , 1999 .

[19]  Bilal Akash,et al.  Experimental and theoretical study of a single-basin solar sill in Jordan☆ , 2005 .

[20]  M. I. Ahmed,et al.  Numerical modelling of a multi-stage solar still , 2000 .

[21]  S. C. Mullick,et al.  Estimation of Heat-Transfer Coefficients, the Upward Heat Flow, and Evaporation in a Solar Still , 1991 .

[22]  Everett D. Howe,et al.  Fundamentals of water desalination , 1974 .

[23]  P. I. Cooper,et al.  The maximum efficiency of single-effect solar stills , 1973 .

[24]  M. Naim,et al.  Non-conventional solar stills Part 1. Non-conventional solar stills with charcoal particles as absorber medium☆☆☆ , 2003 .

[25]  R. Colomer,et al.  Performance analysis of a solar still integrated in a greenhouse , 2007 .

[26]  T. Unny,et al.  Free convective heat transfer across inclined air layers , 1976 .

[27]  G. N. Tiwari,et al.  Optimization of collector and basin areas for a higher yield for active solar stills , 1998 .

[28]  Jim A. Clark,et al.  The steady-state performance of a solar still , 1990 .

[29]  Walid H. Shayya,et al.  Thermodynamic and economic considerations in solar desalination , 2000 .

[30]  W. E. Alnaser,et al.  Experimental comparative study of the performances of single and double basin solar-stills , 2004 .

[31]  G. N. Tiwari,et al.  THERMAL MODELING OF PASSIVE AND ACTIVE SOLAR STILLS FOR DIFFERENT DEPTHS OF WATER BY USING THE CONCEPT OF SOLAR FRACTION , 2006 .

[32]  Shruti Aggarwal,et al.  A new design for a double-condensing chamber solar still , 1997 .

[33]  Ephraim M Sparrow,et al.  Effect of Finite Width on Heat Transfer and Fluid Flow about an Inclined Rectangular Plate , 1979 .

[34]  G. N. Tiwari,et al.  Computer modeling of passive/active solar stills by using inner glass temperature , 2003 .

[35]  Abdul Jabbar N. Khalifa,et al.  Experimental validation and enhancement of some solar still performance correlations , 2009 .

[36]  Badawi W. Tleimat,et al.  Comparison of plastic and glass condensing covers for solar distillers , 1969 .

[37]  Bachir Bouchekima,et al.  Brakish water desalination with heat recovery , 2001 .

[38]  M. T. Chaibi,et al.  Analysis by simulation of a solar still integrated in a greenhouse roof , 2000 .

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

[40]  M. K. Phadatare,et al.  Effect of cover materials on heat and mass transfer coefficients in a plastic solar still , 2009 .

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

[43]  Avraham I. Kudish,et al.  Simulation study on a solar desalination system utilizing an evaporator/condenser chamber , 2003 .

[44]  G. N. Tiwari,et al.  Thermal modeling based on solar fraction and experimental study of the annual and seasonal performance of a single slope passive solar still: The effect of water depths , 2007 .