Increasing Combustion Efficiency in Fuel-Air Thermal Tools with Ejection Nozzle
1
Department of Mechanical Engineering and Transport, Caspian University of Technologies and Engineering named after Sh. Yessenov, Kazakhstan
2
Department of Mechanical Engineering, Kazakh National Technical University named after K.I. Satpayev, Kazakhstan
Submission date: 2026-05-15
Final revision date: 2026-06-06
Acceptance date: 2026-06-07
Online publication date: 2026-09-26
Corresponding author
Amina Zakharovna Bukayeva
Department of Mechanical Engineering and Transport, Caspian University of Technologies and Engineering named after Sh. Yessenov, Kazakhstan
Department of Mechanical Engineering and Transport, Caspian University of Technologies and Engineering named after Sh. Yessenov, Kazakhstan
KEYWORDS
TOPICS
ABSTRACT
The aim of this study is to increase the thermal output of petrol–air burner tools applied to rock breakage during extraction and processing of block stone by intensifying fuel combustion. The research is based on a theoretical framework for shock-wave generation within a perforated ejector nozzle, developed using the conservation laws of continuum mechanics. The methodology includes analysis of supersonic gas flow from the Laval nozzle, as well as calculation of thermodynamic and geometric parameters of the mixing chamber. As a result, the key operational and geometric characteristics of the ejector nozzle were determined, including gas velocity, temperature, outlet cross-sectional area, and jet dimensions. The obtained results demonstrate a significant increase in combustion efficiency and energy characteristics of the thermal tool. The findings are consistent with current studies on supersonic ejector systems and detonation combustion, confirming the effectiveness of the proposed approach.
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| eISSN: | 2391-8071 |
| ISSN: | 1895-7595 |
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