Transient Thermal Stress Calculation of a Shell and Tube Condenser with Fixed Tubesheet |
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| Authors: | Marek Pernica Tomá? Létal Pavel Lo?ák Martin Na? Marcus Reppich Zdeněk Jegla |
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| Affiliation: | 1. Brno University of Technology, Institute of Process Engineering, Technická 2896/2, 616 69 Brno, Czech Republic;2. Augsburg University of Applied Sciences, Faculty of Mechanical and Process Engineering, An der Hochschule 1, 86161 Augsburg, Germany |
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| Abstract: | The present article deals with transient thermal stress calculation on a safety horizontal shell and tube condenser. This condenser is used in a power plant for cooling of hot steam diverted from the turbine in the case of its emergency shutdown. The standard stress calculation was provided according to the EN 13445 standard in steady regime. As consistent with this calculation, an expansion joint must be used on the shell. The main aim of this article is to describe a detailed calculation of the transient temperature field on the shell and tubes, using finite element method analysis, and longitudinal thermal stresses on the shell and tubes during the start-up process. Transient analyses are useable for more accurate EN 13445 calculation and, furthermore, for fatigue calculation. |
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| Keywords: | Condensers Expansion joints Transient temperature fields Transient thermal stresses |
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