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다국어 초록 (Multilingual Abstract)

The thermal stresses of a ceramic heat exchanger were analyzed numerically since the ceramic material is good in heat resistance but weak in the thermal stress. The analysis of thermal stress was conducted in the ceramic core with two boundary conditions depending on bolt jointing. The thermal stresses were computed by applying temperature and pressure distributions obtained from the numerical results of conjugate heat transfer to ANSYS WORKRBENCH. When number of bolt joining halls was reduced from 8 × 2 to 4 × 2, the maximum principal stresses decrease by 47.6～50.5% and increase in safety factors by 2.18～2.5 for ultimate tensile strength. Thus, it can be said that bolt joining halls should be minimized in ceramic heat exchanger to be efficient in reducing thermal stress. In addition, the width of particular gas flow passages were revised from 52 mm to 42 mm to reduce maximum thermal stresses since certain passages experienced high thermal stresses. From the revision, safety factors were increased by 13.8～14.1% for the boundary condition of 4 × 2 bolt joining halls, Therefore, it is suggested that thermal stress can be reduced by changing local geometry of a ceramic heat exchanger.

목차 (Table of Contents)

ABSTRACT
1. 서론
2. 세라믹 코아의 설계
3. 열응력 수치계산
4. 수치계산결과

ABSTRACT
1. 서론
2. 세라믹 코아의 설계
3. 열응력 수치계산
4. 수치계산결과
5. 결론
후기
참고문헌

참고문헌 (Reference)

1 최연선, "화학 플랜트용 칼럼믹서의 ADINA/FSI 해석" 한국소음진동공학회 17 (17): 213-219, 2007

2 최복록, "엔진 배기매니폴드의 열피로 수명 예측" 한국자동차공학회 15 (15): 139-145, 2007

3 김호경, "대형 상용차용 브레이크 드럼의 온도 분포 및 열응력에 관한 유한요소 해석" 한국안전학회 21 (21): 7-13, 2006

4 Park, Y. H, "The Heat transfer and thermal stress analysis on the ceramic core of the box-type Recuperator" 217-276, 1994

5 Nieh, T. G, "Tensile and Fatigue Properties of A 25 VOL% Sic Particulate Reinforced 6090 Al Composite at 300 ℃" 32 (32): 707-712, 1995

6 Yang, C. H, "Performance Simulation and Thermal Stress Analysis of Ceramic Recuperators Formed by SiC and MAS" 53 : 709-725, 2008

7 Tsuzuki, N, "High Performance Printed Circuit Heat Exchanger" 27 (27): 1702-1707, 2007

8 Bourisa, D, "Design of a Novel Intensified Heat Exchanger for Reduced Fouling Rates" 48 (48): 318-3822, 2005

9 Paeng, J. G, "A Theoretical Analysis and CFD Simulation on the Ceramic Heat Exchange" 21 (21): 282-290, 2008

10 Park, K. S, "A Study on Theory Analysis and CFD Simulation for Design of High Efficiency Ceramic Exchanger" 179-186, 2008