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Research Article

Experimental Study on Thermal Decomposition Characteristics of Supercritical n-Dodecane by Using a Batch Reactor System

배치반응기 실험장치를 이용한 초임계 n-dodecane의 열분해 특성 연구

Seung Mook Park1
,
Seung Hyeon Lee1
,
Jun Su Kang1
,
Hyung Ju Lee1†
박 승묵1
,
이 승현1
,
강 준수1
,
이 형주1†
1Department of Mechanical Engineering, Pukyong National University
1국립부경대학교 기계공학과
*Corresponding Author
31 March 2025. pp. 41-49
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Abstract

In an active regenerative cooling system for hypersonic cruise vehicles, hydrocarbon aviation fuel is used as a coolant, absorbing heat within the system to reach a supercritical state. This causes the fuel to undergo endothermic decomposition into hydrogen and various low-molecular-weight hydrocarbons, significantly impacting the performance and efficiency of the regenerative cooling system. In this study, an experimental system was established to investigate the thermal cracking characteristics of hydrocarbon aviation fuel under various supercritical conditions. The system design, experimental methods, and analysis techniques are described, and pyrolysis experiments of n-dodecane were conducted to compare the results with existing experimental data. In particular, the activation energy was obtained to confirm the reliability of the batch reactor experimental system.

Keywords
Hypersonic cruise vehicle
Scramjet engine
Regenerative cooling system
Pyrolysis
Endothermic reaction
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Information
  • Publisher :The Korean Society of Combustion
  • Publisher(Ko) :한국연소학회
  • Journal Title :Journal of the Korean Society of Combustion
  • Journal Title(Ko) :한국연소학회지
  • Volume : 30
  • No :1
  • Pages :41-49
  • Received Date : 2024-12-31
  • Revised Date : 2025-02-18
  • Accepted Date : 2025-02-25
  • DOI :https://doi.org/10.15231/jksc.2025.30.1.041
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