Dear Hitesh,

I worked a lot on this topic years ago. H20-LiBr is a good choice, though there are some limitations.

You can have a look at the following papers of mine, you can download them from RG:

Conference Proceeding: Small size absorption refrigerators: a comparison among different solutions in solar feeding applications

Francesco Asdrubali, Giorgio Baldinelli

Conference Proceeding: Comparison of two similar solar driven absorption chillers for different values of solar radiations

Francesco Asdrubali, F. Ziegler, J. Albers, Giorgio Baldinelli,Andrea Presciutti, S. Petersen

IIR Conference “Solar Heating and Cooling, Perugia, Italy; 09/2006

Conference Proceeding: Experimental and theoretical investigation of solar driven absorption chillers

F. Ziegler, G. Baldinelli, F.Asdrubali, A. Presciutti

IIR International Conference -Thermophysical Propreties and Transfer Processes of refrigerants; 08/2005

Article: Experimental evaluation of the performances of a H20LiBr absorption refrigerator under different service conditions

F. Asdrubali, S. Grignaffini

International Journal of Refrigeration 01/2005; 28(4):489-497. • 1.79

This book chapter will answer your question...."3.14 - Solar Cooling and Refrigeration Systems"

Reference Module in Earth Systems and Environmental Sciences, from Comprehensive Renewable Energy, Volume 3, 2012, Pages 481-494

G.G. Maidment, A. Paurine