Professor Wilfried Roetzel is retired professor and was head of the Institute of Thermodynamics of the Helmut Schmidt University in Hamburg, Germany until 2001. He is Advisory Professor (1994) of the Nanjing University of Science and Technology (NUST) in China and gave lectures at NUST. He also presented lectures at the Naval Postgraduate School (NPS) in Monterey, Cal., USA. He is Fellow of Wessex Institute of Great Britain (2002) and Member of the Academy of Sciences and Humanities in Hamburg (2004). Dr Xing Luo is a senior engineer at the Institute of Thermodynamics, Gottfried Wilhelm Leibniz University Hannover. His research interests include enhanced heat transfer and heat exchangers, process integration and numerical heat transfer. He is author of the chapter on heat exchanger networks in “VDI Heat Atlas”. Professor Dezhen Chen has been working in thermal and environmental engineering institute, school of mechanical engineering, Tongji University as lecturer, associate professor and professor since 1997. She was the leader of several projects associated with high-temperature heat exchanger development for pyrolysis applications.