Didi Faouzi*1, N. Bibi-Triki1, B. Draoui2, A. Abene3 1Materials and Renewable Energy Research Unit M.R.E.R.U, University of Abou-bakr Belkaïd, B.P. 119Tlemcen, Algeria 2Energy Laboratory in Drylands, University of Bechar, Bechar Algeria 3Euro-Mediterranean Institute of Environment and