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전자광학추적장비 냉각용 이중 임펠러 열교환기 시스템의 구조 개선에 따른 열교환 효율 향상에 대한 수치적 연구

A Numerical Investigation on Heat Transfer Enhancement of a Dual-impeller Heat Exchanger for Electro-optical Tracking System Cooling via System Structural Modification

Journal of the Korean Society for Precision Engineering 2025;42(10):871-877.
Published online: October 1, 2025

1 국립창원대학교 스마트제조융합협동과정

2 국립창원대학교 기계공학부

3 키프코전자항공 기계냉각연구소

4 한화시스템 기계설계팀

1 Department of Smart Manufacturing Engineering, Changwon National University

2 School of Mechanical Engineering, Changwon National University

3 R&D Center, Kipco Radar & Aerospace Co., LTD

4 Mechanical Design Team, Hanwha systems

#E-mail: heesungpark@changwon.ac.kr, TEL: +82-55-213-5471
• Received: April 21, 2025   • Revised: June 11, 2025   • Accepted: June 13, 2025

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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  • Development of a Braid-Knot-Based Image Dataset and Its Applications to Heat Exchanger Condition Monitoring
    Youngdoo Choi, Dongjin Kim, Min-Gyu Jeon, Donghan Kang, Hyoungmin Kawk, Rumbeen Cho, Woong Heo, Sera Kim
    Journal of the KNST.2026; 9(1): 245.     CrossRef

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A Numerical Investigation on Heat Transfer Enhancement of a Dual-impeller Heat Exchanger for Electro-optical Tracking System Cooling via System Structural Modification
J. Korean Soc. Precis. Eng.. 2025;42(10):871-877.   Published online October 1, 2025
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A Numerical Investigation on Heat Transfer Enhancement of a Dual-impeller Heat Exchanger for Electro-optical Tracking System Cooling via System Structural Modification
J. Korean Soc. Precis. Eng.. 2025;42(10):871-877.   Published online October 1, 2025
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A Numerical Investigation on Heat Transfer Enhancement of a Dual-impeller Heat Exchanger for Electro-optical Tracking System Cooling via System Structural Modification
Image Image Image Image Image Image Image Image Image
Fig. 1 Schematic of heat exchanger for EOTS cooling
Fig. 2 Details of heat exchanger
Fig. 3 Computational grid of heat exchanger
Fig. 4 Grid independence test
Fig. 5 Distribution of velocity on the heat exchanger
Fig. 6 Distribution of vorticity with velocity vector on the heat exchanger external radial surface for each model
Fig. 7 Flow rate in external system for each model
Fig. 8 Distribution of temperature on the heat exchanger internal radial surface for each model
Fig. 9 Outlet exhaust temperature for each model
A Numerical Investigation on Heat Transfer Enhancement of a Dual-impeller Heat Exchanger for Electro-optical Tracking System Cooling via System Structural Modification
Parameter Diameter [mm]
External Inlet diameter (Dext) 100
Internal Inlet diameter (Dint) 70
Imperller diameter (Dimperller) 90
Center plate diameter (Dcenter) 223
External system length (Lext) 27.9
Internal system length (Lint) 14.2
Properties Air Aluminum Heat Pipe
Density [kg/m3] 1.225 2719 2719
Heat capacity [J/kg·K] 1006.43 871 871
Thermal conductivity [W/m·K] 0.0242 202.4 2000
  Parameter External Internal
Inlet Total pressure [Pa] 0 0
  Total temperature [oC] 50 75
Outlet Static pressure [Pa] 0 0
Rotational speed [rev/min] 7000, 8000, 9000
Interface Rotor-stator Frozen rotor
Table 1 Geometry parameter
Table 2 Properties of material in system
Table 3 Boundary conditions for simulation