Numerical Modelling and Experimental Testing of Heat Exchangers

Introduction.- Mass, momentum and energy conservation equations.- Laminar flow of fluids in ducts.- Turbulent fluid flow.- Analogies between the heat and the momentum transfer.- Developed turbulent fluid flow in ducts with a circular cross-section.- Basics of the heat exchanger modelling.- Engineering methods for thermal calculations of heat exchangers.- Mathematical models of heat exchangers.- Mathematical modelling of tube cross-flow heat exchangers operating in steady-state conditions.- Assessment of the indirect measurement uncertainty.- Experimental testing of heat exchangers.- Determination of the local and the mean heat transfer coefficient on the inner surface of a single tube and finding  experimental correlations.- Determination of mean heat transfer coefficients using the Wilson method.- Determination of correlations for the heat transfer coefficient on the air side assuming a known heat transfer coefficient on the tube inner surface.- Parallel determination of correlations for heat transfer coefficients on the air and water sides.- Determination of correlations for the heat transfer coefficient on the air side by means of CFD simulations.- Automatic control of the liquid temperature at the car radiator outlet.- Final comments.

Professor Dawid Taler, D.Sc., Ph.D. received his doctoral degree in 2002, and postdoctoral degree in 2009 from the Faculty of Mechanical Engineering and Robotics of the University of Science and Technology (AGH) in Cracow. Since 2011 he has been working as a professor at the Faculty of Environmental Engineering at the Cracow University of Technology. Currently, he manages the Department of Thermal Processes, Air Protection and Waste Utilization at the Cracow University of Technology. In 2016 he received the title of professor. He specializes in heat transfer and heating systems, including experimental methods in heat and fluid science. A particular research and development interest is the mathematical modelling and experimental investigation of heat exchangers and energy machines and devices. He is an author of 3 and co-author of 5 monographs and scientific books, 3 of which have been published in English. He has also published 30 chapters in international and national books. He is the author or co-author of over 290 articles in the field of heat transfer, numerical modelling of heat and flow processes, and energy and power technologies. Professor Taler also specializes in thermal and flow measurements, including heat flux measurements, determination of heat transfer coefficient and inverse heat transfer problems, especially the dynamics of heat exchangers and steam generators.