Development and Characterization of Additive-Manufactured Mesoscale Combustor Array
- Authors
- Rajasegar, Rajavasanth; Mitsingas, Constandinos M.; Mayhew, Eric K.; Liu, Qili; Lee, Tonghun; Yoo, Jihyung
- Issue Date
- Jun-2018
- Publisher
- ASCE-AMER SOC CIVIL ENGINEERS
- Keywords
- Mesoscale combustion; Direct metal laser sintering (DMLS); Swirl stabilization; Lean blow-off limits; Combustion efficiency; Gas chromatography-mass spectrometry (GCMS)
- Citation
- JOURNAL OF ENERGY ENGINEERING, v.144, no.3
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ENERGY ENGINEERING
- Volume
- 144
- Number
- 3
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/3901
- DOI
- 10.1061/(ASCE)EY.1943-7897.0000527
- ISSN
- 0733-9402
- Abstract
- Development of a stable and efficient small-scale combustor architecture with comparable performance emission characteristics to large-scale burners is presented. Furthermore, the proposed architecture reduced susceptibility to extinction and maintained high combustion efficiency and low emission levels under ultralean operating conditions for a wide range of combustion power outputs. Prototype burner arrays were additively manufactured and demonstrated with methane/air flames. The burner sustained lean flames (phi = 0.65) independent of power output, indicating good scalability. High combustion efficiencies (98%) were estimated using gas chromatography-mass spectrometry analysis of the exhaust gas. Combined unburned hydrocarbon (UHC) and carbon monoxide (CO) emission measurements were well below 0.1% by mass. Near-adiabatic flame temperatures with minimal spatial variations across the burner were observed resulting from enhanced flame interaction and reduced heat loss. Overall, this study successfully demonstrates the potential for a novel combustor architecture that can be scaled across a wide range of power outputs with minimal performance degradation.
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