Explosive Performance of Coal Dust in Detonation Engines
Author Information
Author(s): Guo Jing, Ge Shirong
Primary Institution: China University of Mining and Technology (Beijing)
Hypothesis
This study aims to evaluate the efficiency and energy release characteristics of different types of coal in pulse detonation engines (PDE).
Conclusion
The study found that detonation pressure increases linearly with coal mass flow, with anthracite achieving the highest pressure and combustion efficiency.
Supporting Evidence
- The maximum detonation pressure (Pmax) increases linearly with coal mass flow.
- Anthracite reached a Pmax of 1.52 MPa at 120 g/s.
- Detonation combustion efficiency improved with mass flow, with peat rising from 52.3% to 83.7%.
- A consistent linear relationship between Pmax and maximum temperature (Tmax) was observed.
Takeaway
Different types of coal can explode in engines, and some types, like anthracite, work better than others.
Methodology
Experiments were conducted with four coal types at mass flow rates from 30 to 120 g/s using a custom PDE setup, with pressure dynamics assessed by high-frequency sensors.
Limitations
The study does not fully understand the characteristics of detonation waves in different coal types.
Digital Object Identifier (DOI)
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