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메탄 화염을 이용한 수직형 버너리그 개발에 관한 연구

Development of a Vertical Burner Rig Using Methane Flame

Journal of the Korean Society for Precision Engineering 2024;41(8):653-661.
Published online: August 1, 2024

1 성균관대학교 대학원 기계공학과

2 안동대학교 기계공학과

3 안동대학교 스마트모빌리티공학과

4 한국생산기술연구원 극한공정제어그룹

1 Department of Mechanical Engineering, Graduate School, Sungkyunkwan University

2 Department of Mechanical Engineering, Andong National University

3 Department of Smart Mobility Engineering, Andong National University

4 Extreme Process Control Group, Korea Institute of Industrial Technology

#E-mail: djkim@anu.ac.kr, TEL: +82-54-820-6128
• Received: April 24, 2024   • Revised: June 13, 2024   • Accepted: June 17, 2024

Copyright © The Korean Society for Precision Engineering

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Citations

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  • Thermal Fatigue Life Evaluation of EB-PVD TBC Using Newly Developed Small-scale Burner Rig
    Soo Park, Dae-Jin Kim, Jun-Young Kim, Seoung-Ju Kim, Chang-Sung Seok
    Journal of the Korean Society for Precision Engineering.2025; 42(1): 65.     CrossRef

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Development of a Vertical Burner Rig Using Methane Flame
J. Korean Soc. Precis. Eng.. 2024;41(8):653-661.   Published online August 1, 2024
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J. Korean Soc. Precis. Eng.. 2024;41(8):653-661.   Published online August 1, 2024
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Development of a Vertical Burner Rig Using Methane Flame
Image Image Image Image Image Image Image Image Image Image Image Image Image Image Image Image Image Image Image Image Image
Fig. 1 Schematic temperature profile across TBC
Fig. 2 Most common burner rig test method using oxy-fuel horizontal flame with side-grooved coin-shaped TBC specimen
Fig. 3 Schematic illustration of vertical burner rig test method using cylindrical specimen holder with longitudinal side slits for cooling air escape
Fig. 4 TBC specimen and its cross-section showing thickness of top coat, bond coat, and substrate
Fig. 5 Schematic illustration of backside cooling system
Fig. 6 Illustration of burner rig frame with exploded diagram of holder part
Fig. 7 Schematic illustration of gas flow rate control system with Arduino
Fig. 8 Experimental setup for flow rate calibration
Fig. 9 Variation of MFC output values according to the increase in the MFC scale during flow rate calibration
Fig. 10 Relation between flow rate and MFC scale
Fig. 11 Schematic illustration of automatic burner moving system
Fig. 12 Comparison of flame shape and temperature between airfuel and oxy-fuel flames at the same gun distance
Fig. 13 Example of flame temperature control by adjusting flow rate ratio
Fig. 14 Experimental setup for thermal gradient test
Fig. 15 Temperature profiles of B-type TC, K-type TC, and pyrometer during the whole thermal gradient test with photos through b-b’-c-c’ sections
Fig. 16 Temperature profiles of K-type TC and pyrometer for ‘d’ section in Fig. 15 with a representative photo
Fig. 17 Temperature profiles of K-type TC and pyrometer for ‘e’ section in Fig. 15 with representative photos
Fig. 18 Variation in the flow rates of methane and oxygen during the whole thermal gradient test corresponding to the temperature profiles in Fig. 15
Fig. 19 The linear relation between flame temperature and ratio of flow rate
Fig. 20 Location of failure for alumina specimen holder after thermal gradient test
Fig. 21 Variation of flame shape according to the increase of total flow rate under the same flow rate ratio of 3.65, the unit is in LPM
Development of a Vertical Burner Rig Using Methane Flame
Part Composition Thickness
Top coat YSZ 600 μm
Bond coat MCrAlY 250 μm
Substrate IN738 3.0 mm
MFC Scale
(0-255)
Flow rate (LPM)
[Gas flow calibrator reading]
Methane Oxygen
26 0.9028 3.3068
77 2.6583 9.6822
128 4.4374 16.182
179 6.2207 22.764
Flow rate (LPM) Ratio of flow rate
(O2/CH4)
Flame temp.
(°C)
CH4 O2
2.67 10.63 3.98 1,550
1.73 8.72 5.04 1,400
2.67 9.74 3.65 1,700
Table 1 Composition of TBC specimen
Table 2 Result of flow rate calibration measurements
Table 3 The ratio of flow rates for the ‘a’, ‘b’, and ‘c’ sections of temperature profiles and corresponding flame temperatures