Hi all. For my teams senior design project we are designing an absorption cycle refrigerator that uses solar energy. We are using NH3 and H2O. I am having several problems with performing a thermodynamic analysis. I’m hoping someone can help me. 1) NH3 boils at -33 C. How do I determine what temperature I need to get my H2O too, so that NH3 will be absorbed into the solution? 2) How do I determine the temperature that the NH3 will boil out of solution? Is this an enthalpy problem? Do I need to add enough heat into the system to break NH4 (l) + OH(l) so that NH3(g) + H2O(l) will be produced? I know NH3 + H2O is an exothermic reaction and I've already calculated the heat given off. I'm just unsure how (or perhaps, why)the Nh3 gas would dissolve into the H2O. And obviously, I can't have my H2O less than -33 at atm pressure. This is a good place to start. I really appreciate anyone time who takes time to help out. Thank you.