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SubmergedCombustion,
Explosion FlameCombustion,
PulsatingCombustion, and
EnvironmentalConsiderations
By
Er.T. AYISHA NAZIBA, Dr. D. RAMESH, Dr. S. PUGALENDHI
Submerged
Combustion
 Submerged combustion involves burning fuel directly within a
liquid medium, such as water or molten metal, where the
combustion products are generated and released into the
surrounding medium
 The combustion process occurs beneath the surface of the liquid,
providing unique heat transfer characteristics and thermal
efficiency.
 Submerged combustion is utilized in applications like water
heating, metal refining, and waste treatment
Benefits &
Environmental
Considerations
 Efficient heat transfer due to direct contact with the liquid
medium.
 Reduced emissions and improved thermal efficiency compared to
conventional combustion methods.
 Submerged combustion can help reduce pollutant emissions by
minimizing direct contact of combustion products with air.
Explosion
Flame
Combustion
 Explosion flame combustion refers to a type of combustion
characterized by rapid and intense flame propagation, often
associated with detonation or deflagration.
 Explosion flames propagate at supersonic speeds, producing high-
pressure waves and shock waves.
 This combustion mode is utilized in applications like detonation
engines, pulse detonation engines (PDEs), and certain types of
industrial processes.
Challenges &
Environmental
Considerations
 Control of explosion flame combustion is crucial to avoid
damaging equipment or structures due to high-pressure waves.
 Efficient utilization of explosion flame combustion requires
advanced engineering and safety measures.
 Explosion flame combustion can result in significant noise and air
disturbance, requiring mitigation measures to minimize
environmental impacts
Pulsating
Combustion
 Pulsating combustion refers to a combustion mode characterized
by cyclic fluctuations in pressure, temperature, and flame
behavior within the combustion chamber.
 Pulsating combustion occurs due to interactions between
combustion dynamics and fluid dynamics within the combustion
chamber.
 This combustion mode is observed in certain types of combustion
systems, including pulse combustors and oscillating combustion
systems.
Applications &
Environmental
Considerations
 Pulsating combustion is utilized in various applications such as
industrial heating, gas turbines, and rocket engines to enhance
combustion efficiency and stability.
 Pulsating combustion systems may exhibit unique emission
characteristics and combustion instabilities that require careful
design and control to meet environmental regulations.
Environmental
Considerations
 Emission Reduction: Advanced combustion technologies,
including submerged combustion and pulsating combustion, offer
opportunities to reduce emissions of pollutants such as nitrogen
oxides (NOx), carbon monoxide (CO), and particulate matter (PM).
 Efficiency Improvements: Combustion technologies that
promote efficient heat transfer and combustion stability
contribute to energy efficiency and reduced environmental
impact.
 Safety and Regulation: Explosion flame combustion requires
strict safety measures and regulatory compliance to mitigate risks
associated with high-pressure waves and noise pollution.
 Sustainability: Sustainable combustion practices aim to minimize
resource consumption, emissions, and environmental impact
through innovative technologies and operational strategies.
THANKYOU

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Submerged Combustion, Explosion Flame Combustion, Pulsating Combustion, and Environmental Considerations

  • 2. Submerged Combustion  Submerged combustion involves burning fuel directly within a liquid medium, such as water or molten metal, where the combustion products are generated and released into the surrounding medium  The combustion process occurs beneath the surface of the liquid, providing unique heat transfer characteristics and thermal efficiency.  Submerged combustion is utilized in applications like water heating, metal refining, and waste treatment
  • 3. Benefits & Environmental Considerations  Efficient heat transfer due to direct contact with the liquid medium.  Reduced emissions and improved thermal efficiency compared to conventional combustion methods.  Submerged combustion can help reduce pollutant emissions by minimizing direct contact of combustion products with air.
  • 4. Explosion Flame Combustion  Explosion flame combustion refers to a type of combustion characterized by rapid and intense flame propagation, often associated with detonation or deflagration.  Explosion flames propagate at supersonic speeds, producing high- pressure waves and shock waves.  This combustion mode is utilized in applications like detonation engines, pulse detonation engines (PDEs), and certain types of industrial processes.
  • 5. Challenges & Environmental Considerations  Control of explosion flame combustion is crucial to avoid damaging equipment or structures due to high-pressure waves.  Efficient utilization of explosion flame combustion requires advanced engineering and safety measures.  Explosion flame combustion can result in significant noise and air disturbance, requiring mitigation measures to minimize environmental impacts
  • 6. Pulsating Combustion  Pulsating combustion refers to a combustion mode characterized by cyclic fluctuations in pressure, temperature, and flame behavior within the combustion chamber.  Pulsating combustion occurs due to interactions between combustion dynamics and fluid dynamics within the combustion chamber.  This combustion mode is observed in certain types of combustion systems, including pulse combustors and oscillating combustion systems.
  • 7. Applications & Environmental Considerations  Pulsating combustion is utilized in various applications such as industrial heating, gas turbines, and rocket engines to enhance combustion efficiency and stability.  Pulsating combustion systems may exhibit unique emission characteristics and combustion instabilities that require careful design and control to meet environmental regulations.
  • 8. Environmental Considerations  Emission Reduction: Advanced combustion technologies, including submerged combustion and pulsating combustion, offer opportunities to reduce emissions of pollutants such as nitrogen oxides (NOx), carbon monoxide (CO), and particulate matter (PM).  Efficiency Improvements: Combustion technologies that promote efficient heat transfer and combustion stability contribute to energy efficiency and reduced environmental impact.  Safety and Regulation: Explosion flame combustion requires strict safety measures and regulatory compliance to mitigate risks associated with high-pressure waves and noise pollution.  Sustainability: Sustainable combustion practices aim to minimize resource consumption, emissions, and environmental impact through innovative technologies and operational strategies.