Marcilla, Antonio, Gómez-Siurana, Amparo, Serrano Cayuelas, María Dolores Geometrical study of the three-dimensional temperature–composition diagrams. An important aid to understand the behavior of the liquid–vapour equilibrium in ternary systems Education for Chemical Engineers. 2014, 9(1): e1-e14. doi:10.1016/j.ece.2013.06.001 URI: http://hdl.handle.net/10045/37291 DOI: 10.1016/j.ece.2013.06.001 ISSN: 1749-7728 Abstract: In this work the usefulness of qualitatively studying and drawing three-dimensional temperature–composition diagrams for ternary systems is pointed out to understand and interpret the particular behavior of the liquid–vapour equilibrium of non-ideal ternary systems. Several examples have been used in order to highlight the interest and the possibilities of this tool, which should be an interesting support not only for lecturers, but also for researchers interested in experimental equilibrium data determination. Keywords:Liquid-vapour equilibrium, Residue curve maps, Ternary systems, Three-dimensional diagrams Elsevier info:eu-repo/semantics/article