Abstract
In the tubes of radiation heaters, which are under high thermal loads, apart from stresses caused by the pressure of the working medium also thermal stresses are produced. Owing to the nonuniform irradiation over the tube periphery, these thermal stresses have to be determined taking into account the radial and tangential temperature gradients in the tube wall. It is shown by the example of the pulverized-coal-fired heater of a closed-cycle gas turbine plant to what extent thermal stresses are caused, assuming linearly elastic behaviour of the tube material, and how the method of fixing the tube ends influences the total stress.
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References
Bammert, K., andP. Seifert: Tube stresses in the radiation part of solar receivers and of conventionally fired heaters. 26th Annual International Gas Turbine Conference. ASME-Paper No. 81-GT-200, Houston, Texas, USA, March 1981.
Bammert, K.: Long-term experience with coal fired heaters in German closed-cycle air turbine plants. Atomkernenergie/Kerntechnik Vol. 38 (1981) No. 4, pp. 241/56.
Bammert, K., A. Sutsch, M. Simon, andA. Mobarak: Small gas turbines with large parabolic dish collectors. 26th Annual International Gas Turbine Conference. ASME-Paper 81-GT-201, Houston/Texas, USA, March 1981
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Bammert, K. The thermal load of tubes in radiation heaters. Forsch Ing-Wes 48, 160–165 (1982). https://doi.org/10.1007/BF02561484
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DOI: https://doi.org/10.1007/BF02561484