Equilibrium data for the five binary systems difluoromethane (R32)-bis(2methoxyethyl)ether (DMEDEG), R32-N,N-dimethylacetamide (DMAC), 1,1difluoroethane (R152a)-N,N-dimethylformamide (DMF), R152a-DMAC and R152a-DMEDEG have been compared with literature data for the three binary systems R32-DMF, 1,1,1,2-tetrafluoroethane (R134a)-DMF and R134a-DMEDEG. All the binary systems were regressed with the Peng-Robinson (PR) equation of state. The vapor-liquid equilibrium behaviors of the eight binary systems were compared. The thermal behaviors of all eight binary systems were analyzed in terms of hydrogen bonding theory on the basis of their chemical structures. The coefficient of absorption refrigeration cycle (COP) changed with the temperature difference, and this behavior was explained in terms of the thermophysical properties of the refrigerants R32, R134a and R152a and the organic solvents.