Solar still; unrevealed facts and reasons causing its low productivity

  • Omar El-Hadad Nanchang Institute of Technology
  • Siti Nudra Shafinie Abdul Aziz University Malaysia Pahang
  • Syarifah Abd Rahim University Malaysia Pahang
  • Few Ne Chew University Malaysia Pahang
Keywords: Seawater Distillation, Solar Still


As the current techniques for water desalination are very costly because of the high demand of electrical power or fossil fue, desalination of seawater using solar energy is one of  the ways to meet the growing water demand at low cost. With the technologies currently available, solar still fresh water production rate is very low, compared to other techniques. The low production rate has been the main reason behind the lack of industrial usage of solar stills. As the maximum temperature which can be reached within the solar still is not very high, the evaporation rate inside the solar still remains low. This low temperature is the main reason for such a massive disadvantage, resulting in reduced heat transfer rate and slow vaporization process. This research aims at analyzing the reason for solar still low productivity, and suggesting some design modifications to solve such a crucial problem. This is done by dividing the solar still evaporation into four processes, then every process is thoroughly analyzed to solve the main problem, and to provide the maximum temperature and heat transfer rate inside the solar still. With this problem solved, use of solar still in industry can become a possibility

Author Biographies

Omar El-Hadad, Nanchang Institute of Technology
Siti Nudra Shafinie Abdul Aziz, University Malaysia Pahang
Syarifah Abd Rahim, University Malaysia Pahang
Few Ne Chew, University Malaysia Pahang


Shiklomanov, I.A., World water resources: a new appraisal and assessment for the 21st century. 1998: United Nations Educational, Scientific and Cultural Organization.

Membrane Desalination Power Usage Put in Perspective, A.M.T. Association, Editor. 2009, AMTA: United State of America

Howe, E.D., Fundamentals of water desalination. 1974.

Buros, O.K., R.B. Cox, and D. Dunagan, The USAID desalination manual. 1980: CH2M Hill International.

Lof, G., K. Spiegler, and A. Laird, Principles of Desalination. 1980, Academic Press, New York.

Porteous, A., Desalination technology: developments and practice. 1983: Applied Science Publishers.

Heitmann, H. and H. Heitmann, Chemical Problems and Chemical Conditioning in Seawater Desalination, Saline Water Processing. VCH Verlagsgesellschaft, Germany, 1990: p. 55-66.

Spiegler, K., Y. El-Sayed, and A.D. Primer, Balaban Desalination Publications. A Desalination Primer, 1994.

Van der Bruggen, B., Desalination by distillation and by reverse osmosis—trends towards the future. Membrane Technology, 2003. 2003(2): p. 6-9.

Bhattacharyya, A., Solar Stills for Desalination of Water in Rural Households. International Journal of Environment and Sustainability (IJES), 2013. 2(1).

Shiklomanov, I.A., Comprehensive assessment of the freshwater resources of the world: assessment of water resources and water availability in the world. 1997: World Meteorological Organization.

Shankar, P. and S. Kumar, Solar Distillation–A Parametric Review. VSRD International Journal of Mechanical, Automobile and Production Engineering, 2012. 2(1): p. 17-33.

El-Bahi, A. and D. Inan, A solar still with minimum inclination, coupled to an outside condenser. Desalination, 1999. 123(1): p. 79-83.

Gnanadason, M.K., et al., Effect of nanofluids in a modified vacuum single basin solar still. Int J Sci Eng Res, 2012. 3: p. 2229-5518.

Velmurugan, V. and K. Srithar, Performance analysis of solar stills based on various factors affecting the productivity—A review. Renewable and Sustainable Energy Reviews, 2011. 15(2): p. 1294-1304.

Tiwari, G., H. Singh, and R. Tripathi, Present status of solar distillation. Solar energy, 2003. 75(5): p. 367-373.

Badran, O.O. and M.M. Abu-Khader, Evaluating thermal performance of a single slope solar still. Heat and mass transfer, 2007. 43(10): p. 985-995.

Tarawneh, M.S.K., Effect of water depth on the performance evaluation of solar still. JJMIE, 2007. 1(1).

Phadatare, M. and S. Verma, Influence of water depth on internal heat and mass transfer in a plastic solar still. Desalination, 2007. 217(1): p. 267-275.

Nijmeh, S., S. Odeh, and B. Akash, Experimental and theoretical study of a single-basin solar sill in Jordan. International communications in heat and mass transfer, 2005. 32(3): p. 565-572.

Kumar, B.S., S. Kumar, and R. Jayaprakash, Performance analysis of a “V” type solar still using a charcoal absorber and a boosting mirror. Desalination, 2008. 229(1): p. 217-230.

Twidell, J. and A.D. Weir, Renewable Energy Resources. 2006: Taylor & Francis.

Iqbal, M., An Introduction to Solar Radiation. 1983: Academic Press.

Peixdto, J.P. and A.H. Oort, Physics of climate. American institute of physics, New York, 1992.

Kabeel, A. Performance of solar still with a wick concave evaporation surface. in Twelfth International Water Technology Conference, IWTC12. 2008. Citeseer.

Akash, B.A., M.S. Mohsen, and W. Nayfeh, Experimental study of the basin type solar still under local climate conditions. Energy conversion and management, 2000. 41(9): p. 883-890.

Gad, H.E., S. El-Gayar, and H.E. Gad. Performance of a solar still with clothes moving wick. in 15th International Water Technology Conference, IWTC. 2011.

Tiwari, G. and Y. Yadav, Comparative designs and long term performance of various designs of solar distiller. Energy conversion and management, 1987. 27(3): p. 327-333.

Madhlopa, A. and J. Clarke, Theoretical study of the aspect ratio of a solar still with double slopes.

Rajaseenivasan, T., P.N. Raja, and K. Srithar, An experimental investigation on a solar still with an integrated flat plate collector. Desalination, 2014. 347: p. 131-137.

Bakos, G.C., Design and construction of a two-axis Sun tracking system for parabolic trough collector (PTC) efficiency improvement. Renewable energy, 2006. 31(15): p. 2411-2421.

Lee, C.-Y., et al., Sun tracking systems: a review. Sensors, 2009. 9(5): p. 3875-3890.

Khalifa, A.-J., A. Al-Jubouri, and M. Abed, An experimental study on modified simple solar stills. Energy conversion and management, 1999. 40(17): p. 1835-1847.

Perlman, H. The Water Cycle 2014 [cited 2014 23 November 2014]; Available from:

Perlman, H. The Water Cycle: Evaporation. 2014 Tuesday, 15-Apr [cited 2014 25-05]; Available from:

Tosun, İ., The thermodynamics of phase and reaction equilibria. 2012: Newnes.

Geankoplis, C., Transport processes and separation process principles (includes unit operations). 2003: Prentice Hall Press.

Kwatra, H.S., Performance of a solar still: predicted effect of enhanced evaporation area on yield and evaporation temperature. Solar energy, 1996. 56(3): p. 261-266.

Velmurugan, V., et al., Desalination of effluent using fin type solar still. Energy, 2008. 33(11): p. 1719-1727.

Fernández, J. and N. Chargoy, Multi-stage, indirectly heated solar still. Solar Energy, 1990. 44(4): p. 215-223.

Schwarzer, K., et al., A new solar desalination system with heat recovery for decentralised drinking water production. Desalination, 2009. 248(1): p. 204-211.

Adhikari, R., A. Kumar, and H. Garg, Techno-economic analysis of a multi-stage stacked tray (MSST) solar still. Desalination, 2000. 127(1): p. 19-26.

Shatat, M.I. and K. Mahkamov, Determination of rational design parameters of a multi-stage solar water desalination still using transient mathematical modelling. Renewable energy, 2010. 35(1): p. 52-61.

Kalbasi, R. and M.N. Esfahani, Multi-effect passive desalination system, an experimental approach. World Applied Sciences Journal, 2010. 10(10): p. 1264-1271.

Xiong, J., G. Xie, and H. Zheng, Experimental and numerical study on a new multi-effect solar still with enhanced condensation surface. Energy Conversion and Management, 2013. 73: p. 176-185.

Abu-Jabal, M.d.S., I. Kamiya, and Y. Narasaki, Proving test for a solar-powered desalination system in Gaza-Palestine. Desalination, 2001. 137(1): p. 1-6.

Huang, B.-J., et al., Solar Distillation System Based on Multiple-Effect Diffusion Type Still. Journal of Sustainable Development of Energy, Water and Environment Systems, 2014. 2(1): p. 41-50.

Schwarzer, K., et al., Solar thermal desalination system with heat recovery. Desalination, 2001. 137(1): p. 23-29.

Rajaseenivasan, T., et al., A review of different methods to enhance the productivity of the multi-effect solar still. Renewable and Sustainable Energy Reviews, 2013. 17: p. 248-259.

Al-Karaghouli, A., D. Renne, and L.L. Kazmerski, Solar and wind opportunities for water desalination in the Arab regions. Renewable and Sustainable Energy Reviews, 2009. 13(9): p. 2397-2407.

Madhlopa, A. and C. Johnstone, Numerical study of a passive solar still with separate condenser. Renewable Energy, 2009. 34(7): p. 1668-1677.

Abu-Hijleh, B.A., Enhanced solar still performance using water film cooling of the glass cover. Desalination, 1996. 107(3): p. 235-244.

Rahim, N.H.A., Utilization of a forced condensing technique in a moving film inclined solar desalination still. Desalination, 1995. 101(3): p. 255-262.

Kabeel, A. and S. El-Agouz, Review of researches and developments on solar stills. Desalination, 2011. 276(1): p. 1-12.

Tabrizi, F.F. and A.Z. Sharak, Experimental study of an integrated basin solar still with a sandy heat reservoir. Desalination, 2010. 253(1): p. 195-199.

Naim, M.M. and M.A.A. El Kawi, Non-conventional solar stills Part 2. Non-conventional solar stills with energy storage element. Desalination, 2003. 153(1): p. 71-80.

Ramasamy, S. and B. Sivaraman, Heat transfer enhancement of solar still using phase change materials (PCMs). Int J Eng Adv Technol, 2013. 2(3): p. 597-600.

Ghoneyem, A. and A. Ileri, Software to analyze solar stills and an experimental study on the effects of the cover. Desalination, 1997. 114(1): p. 37-44.

Kalidasa Murugavel, K., K.K. Chockalingam, and K. Srithar, Progresses in improving the effectiveness of the single basin passive solar still. Desalination, 2008. 220(1): p. 677-686.

Srivastava, P.K., et al. The Effect of the Material of the Body of a Solar Still on its Performance. in Applied Mechanics and Materials. 2014. Trans Tech Publ.

Mahood, H.B., et al., Experimental Study of a Single–Basin Solar Still for Water Desalination.


Sengar, S., Y. Khandetod, and A. Mohod, New Innovation of low cost solar still. European Journal of Sustainable Development, 2012. 1(2): p. 315-352.

Mechanical Engineering (1)