September 12th | 14h30 - 15h45 | Sala de Reuniões do DEM, Pav. Mecânica III
Roger R. Riehl will give a seminar on Nanofluids Application on the Development of High Performance Heat Dissipation Devices, hosted by Prof. Sohel Murshed. Nanofluids have been applied to enhance the thermal performance of passive and active thermal control devices, in order to meet the current and future demand for heat dissipation. In electronics cooling, nanofluids have been used in passive thermal control systems like heat pipes and thermosyphons, which can significantly reduce the heat source temperature. Heat pipes with nanofluids have also been considered for industrial heat recovery systems to save energy and mitigate the waste of heat to the environment, decreasing the need for new heat sources. In active systems, nanofluids have been applied in pumped liquid cooling to overcome the high heat dissipation needs required by large equipment, especially those responsible for the thermal control of clusters of electronics. In face of the developments made so far, nanofluids have demonstrated great potential to enhance the thermal performance on both passive and active systems, which lead them to be used in final products.
Dr Roger Riehl is a senior Thermal Control Specialist and Faculty at the Graduate School at the National Institute for Space Research (INPE)/Space Mechanics and Control Division (DMC) - Brazil, and Consultant for Thermal Management Systems for various military and aerospace projects.
Roger received his PhD in Mechanical Engineering from the University of São Paulo (Brazil) and Clemson University (USA) in 2000, where he received the Fulbright Scholar Award. He completed his Post-Doc at Clemson University in 2001. He has been working on the development of several projects using heat pipes, pulsating heat pipes and loop heat pipes for satellites and surveillance systems for military applications. He has worked as PI in 5 major R&D projects towards the implementation of heat pipes and loop heat pipes technologies and in 20 other projects using heat pipes as final products for aerospace (satellites and space probes) applications, actively contributing with the development of heat pipes and loop heat pipes technologies with specialists around the world. He is currently working in 2 R&D projects as PI towards the implementation of nanofluids in heat pipes for high sensitive equipment with industrial partners. He has a patented computer code for design and evaluation of the thermal behavior of heat pipes and loop heat pipes, also applying nanofluids. He has published a book about microchannel heat transfer, 20 articles in indexed journals, more than 100 articles in international conferences and about 150 reports related to the technological development of heat pipes and loop heat pipes, also working as reviewer for 25 indexed journals. As a Faculty, he is responsible for the Thermal/Fluids disciplines for masters and PhD levels, being the thesis advisor of 5 finished PhDs.