Concentrated Parabolic Solar Distiller with latent heat storage capacity

I. I NTRODUCTION Water is one of the most important resources for human life sustainability. Along with the supply of energy, access to freshwater is a fundamental need of all societies. Although water covers approximately 70% of the earth's surface, supplies of potable water are rapidly disappearing. This is because only 0.62% of the available water is in a form that can be traditionally treated for human consumption [1]. Energy storage plays important roles in conserving available energy and improving its utilization, since many energy sources are intermittent in nature. Short term storage of only a few hours is essential in most applications such as improving the latent heat storage, sensible heat storage plays a vital role in conservation of energy. During the last century, these potable water sources from both surface and ground water resources have been increasingly depleted due to increases in worldwide population. M.M. El-Kassaby[2] studied the complete design and fabrication for a distilled water apparatus using a line concentrator of parabolic reflector type, which can be used for sea water distillation along with a steady state theoretical model based on energy balance is presented. M.F. El-Refaie [3] has made analytical study of the performance of the stationary reflector/tracking-absorber (SRTA) solar collector with tubular absorber and found different multi-reflection zones of the mirror. Oommen and Jayaraman [4] analysed non-evacuated CPC cavities with flat or cylindrical absorbers. Rene tchinda [5] presented a mathematical model for computing the thermal performance of an air heater with a truncated compound parabolic concentrator having a flat one-sided absorber. Naghelli Ortega et al. [6] studied effect of concentrator as vapour generator for solar-ammonia and water adsorption refrigerator. S.Sentilkumar[7] found the