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http://dx.doi.org/10.22156/CS4SMB.2020.10.02.082

Numerical Study of Heat Transfer Characteristics and Thermal Stress for Enamel coating Heat Exchanger in High Temperature Firing Process  

Choi, Hoon-Ki (Division of Mechanical Engineering, Changwon National University)
Lim, Yun-Seung (Division of Mechanical Engineering, Changwon National University)
Lee, Jong-Wook (Researcher, R&D Center, BHI)
Publication Information
Journal of Convergence for Information Technology / v.10, no.2, 2020 , pp. 82-88 More about this Journal
Abstract
The purpose of this study is to obtain basic data on the optimization of firing process conditions for enamel coating in chemical heat exchanger. The method of increasing the firing temperature in order to apply enamel coating to shell & tube type heat exchanger was examined. The temperature distribution of the heat exchanger in the firing kiln was numerically calculated using a commercial CFD program. The structural safety of the heat exchanger was confirmed by thermal stress analysis using the FSI method. Numerical analysis and experimental results show that there is a problem of safety due to temperature difference when the heat exchanger at room temperature is directly put into a firing kiln at 860℃. Therefore, a preheating process is need to reduce the temperature difference. As in Case2 with fewer firing steps, the first stage preheating temperature of 445℃and the second stage firing temperature of 860 ℃are considered to be most suitable.
Keywords
Enamel coating; Heat exchanger; Firing process; Heat transfer; Thermal stress;
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  • Reference
1 S. K. Woo, K. S. Hong & B. Kang. (2000, Apr.). The Development of Corrosion Resistant Heat Exchanger Covered by Fluorpolymer. Resin. Korea Society for Energy Engineering kosee Conference, (pp. 215-222).
2 K. S. Hong. S. K. Woo. I. S. Han. D. W. Seo & K. S. Lee. (2002) The Development of Glass Enamell Coating Heat Exchanger. Korea Society for Energy Engineering kosee Conference, 141-146.
3 W. S. Kim. (2018). The War on Corrosion (Heat Exchanger Coating Technology). Journal of the KSME, 58(10), 28-32.
4 S. H. Heo & H. J. Pi. (2016). Enamel Industry and Technology. Journal of Ceramist, 19(2), 54-58.
5 K. J. Seong & C. S. Lee. (2017). Operation and Improvement Cases of FGD Non-leakage Type Gas-Gas Heater(GGH) for Coal Fired Power Plants. Journal of Korean Soc. Combust, 22(4), 35-42.   DOI
6 ANSYS. (2018). ANSYS Fluent V.19 User Guide, USA.
7 ANSYS. (2018). ANSYS Workbench V.19 User Guide, USA.
8 H. K. Choi & G. J. Yoo. (2019, July). Numerical Study of Heat Transfer Characteristics for Enamel coating Heat Exchanger. Conference of KSFM. Pyeongchang.
9 ASME. (2017). Boiler & Pressure Vessel Code II Part D, USA.
10 ASME. (2017) Rules for Construction of Pressure Vessels VIII Division 2, USA.