Experimental Investigation and Thermodynamic Performance Analysis of a Solar Distillation System with PCM Storage: Energy and Exergy Analysis
This article presents the experimental performance investigation of solar still integrated with two types of phase change materials namely Lauric acid and Myristic acid independently, used as storage medium of solar energy. The experiments were performed during the months of April-May 2011, under Indian climatic conditions. The effect of input parameters such as mass of water in basin and mass of phase change material integrated with solar still basin on productivity of the solar still has been studied. Also on the basis of the experimental data the values of exergy and energy were calculated. It has been found that (i) productivity of solar still integrated with Lauric acid is 22% more than the solar still integrated with Myristic acid. (ii) the energy efficiencies for solar still integrated with Lauric acid and Myristic acid are found to be 39.6% and 34.4% where as exergy efficiencies values are 0.29% and 0.74% respectively (iii) the cost of using Lauric acid is lesser than using Myristic acid for same amount of productivity.
WHO/UNICEF, Meeting the MDG Drinking Water and Sanitation Target: A
Mid-term Assessment of Progress, WHO, Geneva, Switzerland/UNICEF, New
York, NY, 33 pp. 2004.
UNWWAP, U.N.W.W.A.P., Water for people: Water for life, UN World Water
Development Report, UNESCO, Paris, France. 2003: pp. 576
WMO, W.M.O., Comprehensive Assessment of the Freshwater Resources of
the World, UN, UNDP, UNEP, FAO, UNESCO, WMO, United Nations Industrial
Development Organization, World Bank, SEI, WMO, Geneva, Switzerland.
Naim, M.M. and M.A.A. El-Kawi, Non-conventional solar stills Part 2. Non-conventional solar stills with energy storage element. 153(2002), 1-3, pp. 71-80.
Al-Hamadani, A.A.F. and S.K. Shukla, Water Distillation Using Solar Energy
System with Lauric Acid as Storage Medium. International Journal of Energy
Engineering, 1(2011)1, pp. 1-8.
Fath, H.E.S. and S.M. Elsherbiny, Effect of adding a passive condenser on
solar still performance. Energy Conversion and Management,. 34(1993)1, pp.
Madhlopa, A., Development of an advanced passive solar still with separate
condenser, in Mechanical Engineering. 2009, Strathclyde: Glasgow, United
Velmurugan, V., et al., Single basin solar still with fin for enhancing productivity.
Energy Conversion and Management,. 49(2008)10, pp. 2602-2608.
Sarı, S., Thermal reliability test of some fatty acids as PCMs used for solar
thermal latent heat storage applications. Energy Conversion and Management,.
(2003),14, pp. 2277-2287.
Sarı, A. and K. Kaygusuz, Thermal and heat transfer characteristics in a latent
heat storage system using lauric acid. Energy Conversion and Management,.
(2002)1, pp. 2493-2507.
Sarı, A. and K. Kaygusuz, Thermal performance of myristic acid as a phase
change material for energy storage application. Renewable Energy, 24(2001)2,
Sharma Dutt, Kitano Hiroaki, and Sagara Kazunobu, Phase Change Materials
for Low Temperature Solar Thermal Applications. Res. Rep. Fac. Eng. Mie
Univ., 29, (2004), pp. 31-64.
Buddhi D, et al., simplification of the differential thermal analysis method
to determine the latent heat of fusion of phase change materials. J. Phys. D:
Appl. Phys., 20, (1987)A pp. 1601.
S.K. Shukla, V.P.S. Sorayan and S.K. Gupta Parametric Studies of Passive/Active
Solar Stills by using Modified Convective Mass transfer relations, International
Journal of Ambient Energy, 25 (2004)3, pp. 212-232.
S.K. Shukla Computer modeling of Passive Solar Still by Evaluating Absorptivity
of the basin liner, International Journal of Ambient Energy 24(2003)3,pp.
Bachir, B., A solar desalination plant for domestic water needs in arid areas of
South Algeria, Desalination, 153 (2003),1-3, pp. 65-69
Taiwo, M.O., Improving the Performance of Solar Stills using Sun Tracking in
Mechanical Engineering. Strathclyde Engineering, 2010.
Shukla, S.K., Rai, A.K., Analytical Thermal Modelling of Double Slope Solar
Still by Using Inner Glass Cover temperature, Thermal Science, 12 (2008),3,
Shukla, S.K., Product Cost Calculations of Various Designs of Conventional
Solar Still Systems, Int. Journal of Agile Systems and Mgmt., 4 (2009),1/2, pp.