P L Dhar taught in the mechanical engineering department of IIT Delhi for over thirty six years. His research focused on Thermal System Simulation and Design, spanning a wide range from refrigeration to thermal power plant systems. Based on this work, he developed a post graduate course with the same title and taught it for over two decades. Besides this, he also taught thermodynamics, refrigeration and air-conditioning, heat and mass transfer to undergraduate and post graduate students.
Sridhar Thyageswaran developed and taught several graduate-level courses in thermal sciences for mechanical engineering students at Coimbatore Institute of Technology in India, for nearly twenty-one years. His specialization and interests lie in the areas of heat transfer, fluid dynamics, and thermodynamics. He graduated with honours from the Indian Institute of Technology-Delhi and later received his M.S. and Ph.D. degrees in mechanical and aerospace engineering from Armour College of Engineering, Illinois Institute of Technology. He has authored several single-author technical papers in reputed peer-reviewed international journals and conferences. Prior to serving in academia, he worked as a Principal Engineer with Parametric Technology R&D (India) for seven years, in areas related to computer-aided design. His roles there involved the development of complex mathematical software algorithms for the creation of spline curves and spline surfaces used in geometric modelling.