G. F. Nellis is Professor of Mechanical Engineering at the University of Wisconsin, Madison. His teaching expertise has been recognised through awards including the Polygon Engineering Council Outstanding Professor of Mechanical Engineering Award (2013 and 2007), the Pi Tau Sigma Distinguished Professor of Mechanical Engineering Award (2016, 2012, 2009, and 2006), and the J. G. Woodburn award for Excellence in Teaching (2008). He is a Fellow of the American Society of Heating, Refrigeration, and Air-Conditioning Engineers.