On the energy efficiency in the heatproof nozzle of the pneumatic pulsator system during supersonic airflow
Abstract
In this article, a study of supersonic airflow through a channel with various cross-section is presented. The channel is namely a heatproof nozzle which is used in a pneumatic pulsator system. The system utilizes a pneumatic impact to destruct or to avoid of the creation of unfavourable phenomena which comes from cohesion forces. The pneumatic pulsator system is driven by compressed air and a high-velocity airflow is induced by the difference between internal and external air pressure. This flow changes its characteristics during a work cycle of the pulsator from subsonic to supersonic conditions. It causes a very dynamic gas conversion and may produce additional heat inside the pulsator and its nozzle. The article presents a method for calculating the value of the heat which can be generated inside the heatproof nozzle. The results of the study shows that the small amount of energy is lost during the airflow which can generate an increment of heatproof nozzle wall temperature.
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Author Biographies
Krzysztof J. Wołosz received his M.Sc. in Faculty of Civil Engineering, Mechanics and Petrochemistry, Warsaw University of Technology Branch in Płock. At the time being he is a researcher in Department of Process Equipment at this University. He is an expert of Association of Mechanics and Mechanical Engineers with speciality of Chemical Industry Equipment. He specializes in calculation of flow phenomena in continuous media with application in industry. He is an author and co-author of 40 scientific papers.
Jacek Wernik received his MSc in mechanical engineering 1997 and PhD 2005, from Warsaw University of Technology where he also took two postgraduate courses in Information Technology and Project Management. Participant in Framework Programs UE. Author or co-author of 40 papers published in peer-reviewed scientific journals. Since 2016 director of Institute of Mechanical Engineering.
Copyright (c) 2018 Krzysztof J. Wołosz, Jacek Wernik
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