Fundamental Characteristics of Ammonia/Air Premixed Laminar Flames

Presented on September 23, 2014 during the NH3 Fuel Conference 2014

Authors Akihiro Hayakawa Takashi Goto Rentaro Mimoto Taku Kudo Hideaki Kobayashi Tohoku University

Download this Presentation A PDF of this paper is not currently available.

Abstract

Fundamental flame characteristics must be required for the design of ammonia fueled combustors. However, few studies of ammonia combustion have been conducted. In this study, fundamental ammonia/air premixed laminar flame characteristics, such as NO formation/reduction mechanisms and laminar burning velocity, were experimentally and numerically investigated. NO mole fraction in burned gas from ammonia/air premixed flames were investigated using a stainless-steel nozzle burner. Experiments were conducted at various equivalence ratios and pressures. As a result, NO mole fraction in burned gas reduced with the increase in equivalence ratio and pressure. Formation/reduction mechanisms of NO were numerically investigated. Laminar burning velocity and Markstein length were evaluated from spherically propagating premixed flames in a constant volume combustion chamber. As a results, the maximum unstretched laminar burning velocity within the examined range was 6.92 cm/s at equivalence ratio of unity. Markstein length increased with the increase in equivalence ratio.

Topics Ammonia Combustion Emissions Testing

Authors hayakawa@flame.ifs.tohoku.ac.jp Takashi.Goto@ammoniaenergy.org Rentaro.Mimoto@ammoniaenergy.org kudo@tech.ifs.tohoku.ac.jp kobayashi@ifs.tohoku.ac.jp

Madoqua Power2X webinar on Tuesday, November 26

Please join us for this informative webinar. Click here to register and get the details!

Annual Conference highlights industry advancements

It was an exciting three days in New Orleans with 300 attendees from 22 countries participating in our 21st AEA Annual Conference. Thank you to our generous sponsors and to all those who attended the conference. Stay tuned for a recap of the events and sessions. Presentations from all the sessions will be posted shortly.

Featured content

In 2023, AEA reached many milestones. Read about them in our 2023 Annual Report.