Studie av cirkulation och stabilitet i ånga/vattensystem för pannor med naturligt vattencirkel
[Examensarbete på avancerad nivå]
In this master thesis the water circulation in a boiler tubewall has been studied and conclusions have been stated about parameters that effect the circulation and the stability. Unsatisfactory or unstabil water circulation is undesirable since it can result in damages on the tubewall. Literature studies have been conducted and calculations have been carried out in computer programmes designed for circulation and stability. A simple circuit, representative of a tubewall in a kraft recovery boiler, has been simulated in the programmes to investigate how different parameters effect the circulation and the stability. The computer programmes basis and theories have been analysed, suggestions on updates of the programmes have been presented and also advice on future work. Of the parameters analysed, there were the c
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