IJEX is dedicated to providing an interdisciplinary platform for information and ideas in the field of exergy and thermodynamic optimisation. It publishes a wide range of original, high-quality research papers, and ancillary features, spanning activities from fundamental research to industrial applications. IJEX covers aspects of exergy analysis of engineering and non-engineering systems and processes in a large variety of disciplines, ranging from mechanical engineering to physics and chemical engineering to industrial ecology.Topics covered include:-Thermodynamic systems-Energy-related applications-Process optimisation-Energy systems, policies, planning-Exergy/environment modelling-Exergetic life cycle assessment-Industrial ecology-Sectoral exergy utilisation-Waste exergy emissions-Second-law efficiency-Thermo- and exergo-economics-Exergy in sustainable development-Criticisms of and problems with use of exergy-Entropy generation minimisation-Constructal theory and design