Session: 04-25: Novel Combustors I

Paper Number: 102826

102826 - Numerical Investigation on Combustion Characteristics and Emissions of Hydrogen/methane Blends in Flamesheet Combustor. 

In recent years, several investigations on hydrogen combustors have been performed to reduce greenhouse gas emissions and prevent the flashback phenomenon. Flamesheet^TM is a novel headend-combustor-component design that can adopt 40% of Hydrogen while maintaining the same NOx emission performance. It is suitable with many types of popular combustor models including 501F DLN, 7F DLN 2.6, and 7F DLN 2.6+. In the present study, a numerical investigation was performed to study the combustion characteristics of methane blended with hydrogen at various compositions for a lean premixed swirling flame in a W501F Flamesheet combustor. The amount of hydrogen enrichment varies from 0 to 40% by volume. A numerical approach using the partially-premixed flamelet model, and turbulent standard model was adopted for simulating the Flamesheet combustor. The flamelet-generated manifold was used to analyze the effect of hydrogen enrichment, the equivalent ratio on the flame operation, temperature distribution and velocity, NO emissions, and species concentrations. The operating principle of this Flamesheet model was described and details of flow characteristics, and heat transfer are discussed. The effects of fuel ratio on combustion characteristics and emissions are also analyzed. The results reveal that Hydrogen addition increases flame temperature, decreases flame dimensions, and reduces CO2 emissions with a marginal increase in NOx emissions.

Presenting Author: Duy Tan Vo Chung Ang University

Presenting Author Biography: My name is Duy-Tan Vo. I received an M.Sc. degree in refrigeration and air conditioning engineering from Korea Maritime and Ocean University, Korea, in 2020 and continue studying for a Ph.D. in renewable energy and clean power plant at Chung-Ang University, Korea. My interesting researches include multiphase flow boiling and condensation, heat pipe, CFD, microchannel, aerodynamic and heat transfer in a gas turbine blade, and combustion characteristics. My recent study focuses on investigating the combustion characteristics in the hydrogen gas turbine combustor.

Authors:

Duy-Tan Vo Chung Ang University
Jine-Sung Jung Korea Electric Power Corporation Research Institute
Jaiyoung Ryu Chung Ang University