On the energy efficiency in the heatproof nozzle of the pneumatic pulsator system during supersonic airflow
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.
Copyright (c) 2018 Krzysztof J. Wołosz, Jacek Wernik
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors retain full copyright to their individual works.
The Journal of Mechanical and Energy Engineering (JMEE) publishes fully open access articles.
Open Access benefits:
- High visibility – all articles are made freely available online for everyone worldwide, immediately upon publication.
- Increased visibility and readership.
- Rapid publication.
- All articles are CC BY licensed. The final article can be reused and immediately deposited in any repository.
- Authors retain the copyright to their work.
By publishing with us, you retain the copyright of your work under the terms of a Creative Commons Attribution 4.0 International (CC BY) license.
The CC BY license permits unrestricted use, distribution and reproduction in any medium, provided appropriate credit is given to the original author(s) and the source, a link to the Creative Commons license is included, and it is indicated if any changes were made. This means that you can deposit the final version of your work in any digital repository immediately after publication.
We are committed to providing high-level peer review, author and production services, so you can trust in the quality and reliability of the work that we publish.