Research Output per year
At high temperatures the water/steam side oxidation resistance is an important issue for boiler components like superheaters, where the growing internal oxide decreases heat transfer and increases surface temperature. This is increasingly critical for modern plants that aim for high efficiency from elevated levels of operating temperature and pressure. In this paper, a new simple model is presented to describe the steam/water side oxidation rate of common alloys for the high temperature end of the boiler plant. The model is based on the chemical composition of the alloys, applying equivalence expressions for collapsing the multi-variable problem to a more easily manageable setting with a combined parametric oxidation (POX) model. For verification, a range of experimental water/steam oxidation data from numerous tested alloys has been compared with the model predicted oxide growth. The results suggest a surprisingly good agreement with the model and test data. Although the optimised model parameters differ between e.g. steels and nickel alloys, as expected due to difference in the oxides, they remain very similar within a given material class, e.g. for all tested steels.
|Title of host publication||Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts|
|Editors||Pertti Auerkari, Juha Veivo|
|Place of Publication||Espoo|
|Publisher||VTT Technical Research Centre of Finland|
|Publication status||Published - 2013|
|MoE publication type||Not Eligible|
|Event||BALTICA IX - International Conference on Life Management and Maintenance for Power Plants - Helsinki-Stockholm, Finland|
Duration: 11 Jun 2013 → 13 Jun 2013
|Conference||BALTICA IX - International Conference on Life Management and Maintenance for Power Plants|
|Period||11/06/13 → 13/06/13|
Baltica IX - International Conference on Life Management and Maintenance for Power Plants: AbstractsAuerkari, P. (ed.) & Veivo, J. (ed.), 2013, Espoo: VTT Technical Research Centre of Finland. 103 p. (VTT Technology; No. 107).
Research output: Book/Report › Report
Yli-Olli, S., Holmström, S., Auerkari, P., & Penttilä, S. (2013). New model for steam oxidation of power plant steels. In P. Auerkari, & J. Veivo (Eds.), Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts (pp. 98). VTT Technical Research Centre of Finland. VTT Technology, No. 107 https://www.vtt.fi/inf/pdf/technology/2013/T107.pdf