EXPERIMENTAL INVESTIGATION OF SOLAR STILLS INTEGRATED WITH SOLAR WATER HEATING COLLECTORS

Year 2017, Volume: 37 Issue: 2, 97 - 107, 31.10.2017

Emin El , Gülşah Çakmak , Zeki Argunhan , Cengiz Yıldız

Abstract

Solar still is a more practical way of obtaining clean water. In this study, we aimed to improve the efficiency of solar still systems and obtain distilled water at the same time. For this purpose, 5 different solar still systems were designed. Type 1; conventional solar still, Type 2; conventional solar still integrated with solar water heating collector and run via natural convection, Type 3; conventional solar still integrated with solar water heating collector and tubular heat exchanger and run via natural convection, Type 4; conventional solar still placed with plate heat exchanger and integrated with solar water heating collector and run via natural convection, Type 5; conventional solar still placed with plate heat exchanger and integrated with solar water heating collector and run via forced convection. In this study, the experiments were carried out on the parameters influencing the performance, the amount of distilled water obtained, and the efficiency of experiment settings designed in different types; and finally the results were presented. The amount of distilled water and efficiency of conventional solar still were 2389 ml and 51.47%, respectively. Maximum total amount of water and efficiency from natural convection systems were obtained from Type 4, and the values calculated were found as to be 5788 ml and 55.91%. Maximum amount of distilled water and the efficiency were obtained by utilizing forced convection system were found as to be 6068 ml and 58.99%, respectively.

Keywords

Solar water heater, Solar water distillation

References

• Alaudeen A., Johnson K., Ganasundar P., Syed Abuthahir A., Srithar K., 2014, Study on stepped type basin in a solar still distiller, Journal of King Saud University – Engineering Sciences, 26, 176–183.
• Appadurai M., Velmurugan V., 2015, Performance analysis of fin type solar still integrated with fin type mini solar pond, Sustainable Energy Technologies and Assessments, 9, 30–36.
• Duffie J., Backman W.A., 1980, Solar Engineering Thermal Processes, Wiley, New York.
• Dunkle R.V., 1961, Solar water distillation, the roof still and multiple effect diffusion still, International Development in Heat Transfer, ASME, Proc. International Heat Transfer, Part V, University of Colorado. Holman, J.P. (1971). Experimental Methods for Engineers, McGrawHill Book Company, 37-52.
• Malik, M.A.S., Tiwari, G.N., Kumar, A. and Sodha, M.S. 1982, Solar Distillation: A Practical Study of a Wide Range of Stills and Their Optimum Design, Construction and Performance, Pergamon Press, Oxford.
• Morad M.M., El-Maghawry H.A.M., Wasfy K.I., 2015, Improving the double slope solar still performance by using flat-plate solar collector and cooling glass cover, Desalination, 373, 1–9.
• Rajaseenivasan T., Nelson Raja P., and Srithar K., 2014, An experimental investigation on a solar still with an integrated flat plate collector, Desalination, 347, 131-137.
• Sampathkumar K., Arjunan T.V., Pitchandi P., and Senthilkumar P., 2010, Active solar distillation A detailed review, Renewable and Sustainable Energy Reviews, 14, 1503–1526. Sharma V.B., Mallick S.C., 1991, Estimation of heat transfer coefficients, upward heat flow and evaporation in a solar still distiller, Trans. ASME (Solar Energy), 113, 36-41.
• Sodha M.S., Singh U., Kumar A., Tiwari G.N., 1980, Transient analysis of solar still distiller, Energy Conversion and Management, 20, 191-195.
• Tiwari G.N., Shukla S.K., Singh I.P, 2003, Computer modeling of passive/active solar still distillers by using internal glass temperature, Desalination, 154, 171-185.
• Xiong J., Xie G., Zheng H., 2013, Experimental and numerical study on a new multi-effect solar stillwith enhanced condensation surface, Energy Conversion and Management, 73, 176–185.