- Author
-
Paavola, J.
- Title
- Analytical/Numerical Model for Heat Transfer in Fire-Protected Steel Structures.
- Coporate
- Helsinki University of Technology, Espoo, Finland
- Book or Conf
- Gepipari Tudomanyos Egyesulet. International Symposium on Fire Protection of Buildings, 3rd. May 10-12, 1990,
Eger, Hungary,
Banky, T.; Kovacs, B. D., Editors,
35-44 p.,
1990
- Keywords
-
fire protection
|
steel structures
|
heat transfer
|
analytical studies
|
numerical analysis
|
equations
|
material properties
|
steel columns
- Abstract
- The structural problems in the field of fire technology often consist of the tasks, how to protect load-bearing structures against fire during a certain time, which is determined in accordance with the purpose of the use of the structure. Various structures are classified according to their fire resistance times. Usually the object protected has a high specific heat and insulation materials, on the contrary, a low conductivity and low specific heat. In this paper the heat transfer problem of steel columns with mineral wool insulations is handled by combined analytical and numerical techniques. The subject of this paper originates on the development of new testing and calculation methods for dimensioning the insulation of steel structures. The calculation method needed for the practice has to be simple and easy to manage. A lot of fundamental analytical methods for different heat transfer problems are presented by Carslaw and Jaeger. Wickstrom has developed some approximate numerical methods. Melinek and Thomas have compared the methods and estimated their quality. This paper includes the ideas presented in Refs. [6,7] where also ample experimental results are shown.