.AixLib.Fluid.CHPs.OrganicRankine.Data.WorkingFluids.R123 .AixLib.Fluid.CHPs.OrganicRankine.Data.WorkingFluids.R123Record containing properties of R123. Its name in CoolProp is "R123". A figure in the documentation of AixLib.Fluid.CHPs.OrganicRankine.ConstantEvaporation shows which lines these arrays represent.