Vapor-liquid equilibrium measurement of 1,1,1,3,3-pentafluoropropane + N,N-dimethylformamide/diethylene glycol dimethyl ether/N-methyl-2-pyrrolidone working fluids for absorption power cycle Li, X.; Zheng, D.; Zhang, M.; Dong, L.; Fluid Phase Equilibria 2014, 366, 1-8