Solid-liquid equilibria in the systems NH3-H2O-LiBr and H2O-LiBr at p=1 atm in the range from −35 to 80°C

Solid-liquid equilibria at ambient pressure and solid-liquid-vapor equilibria at T=303.15 K have been measured in the system ammonia-water-lithium bromide for various initial concentrations of lithium bromide. Liquid phases have been analyzed using ion selective electrodes. A ternary phase diagram of the system at T=303.15 K is provided showing a triple line and several regions in which solid phases of different kind occur. This will restrict considerably the use of these systems as working fluids in absorption machinery.Paper dedicated to Professor Jospeh Kestin.