P.N.Rao is currently working as an Associate Professor in department of Mechanical Engineering, Wollega University-Ethiopia since 2013 under UNDP program. He has 25 years of teaching experience. He earned his B.E and M.Tech degrees in Mechanical Engineering from Osmania University. His research interests include Thermal Engineering, Refrigeration and Heat Transfer. He is the active member of several professional bodies. He has published several research papers in international journals and conferences.