COMPARISON BETWEEN DIFFERENT CALCULATION PROCEDURES OF LOADS CAUSED BY TEMPERATURE DILATATION IN PIPELINES

The problem of loads caused by the temperature dilatations in pipes and its effect on strain and stress state of the entire pipeline is common problem in engineering practice. This paper describes three methods for calculation of loads that can occur in the pipeline caused by temperature differences. The study presented in the paper analysed the L shaped pipeline configuration with an operating temperature at 200°C, pipeline material P235GH, angle between legs of the L shaped pipeline is 90, pipe dimension DN 300 and operating pressure is 10 bar (absolute pressure). The calculation was presented according to standards EN 13480-3 and AD 2000 and Russian method commonly used in engineering practice. The three methods have different engineering approaches for solving the same type of the problem, so the specific differences were presented in the paper. All the results are presented in unified tables for easier comparison and analysis. It can be conducted that all three presented methods showed similar results and choosing the most suitable one for the practical application is mainly determined by the type of the result needed for the specific application.