Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
648363 | Applied Thermal Engineering | 2009 | 8 Pages |
Abstract
This paper presents an analysis of the thermal stresses in radiant tubes. The analytical analysis is verified using a finite element model. It was found that axial temperature gradients are not a source of thermal stresses as long as the temperature distribution is linear. Spikes in the axial temperature gradient are a source of high thermal stresses. Symmetric circumferential gradients generate thermal stresses, which are low as compared to the stress rupture value of radiant tubes. Radial temperature gradients create bi-axial stresses and can be a major source of thermal stress in radiant tubes. A local hot spot generates stresses, which can lead to failure of the tube.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
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Authors
Mohammad A. Irfan, Walter Chapman,