The multi-scale modelling of process systems using hierarchical coloured Petri nets for diagnostics is investigated in this report. A case study is used to systematically show the modelling approach using an illustrative example of a tank reactor with cooling jacket. This form of representation shows how CPNs can provide a hierarchically structured framework for advanced fault diagnosis. Resear...

In this paper, we propose a generic concept of ”Flexible Intelligence Machine Control (FIMC)” which acquires control knowledge from the operation data of expert operators and places higher-level automation on conventional-level cnotrol. And we show two practical examples of FIMC including temperature control on the actual jacket tank in polymerization process and automatic start-up operation of...

BACKGROUND Although any travel harbors potential health problems, travel across water poses the additional risk of involuntary contact with water in the event of an emergency. Studies suggest that fatal boat-related accidents have occurred due to the passengers' inability to don their life jackets. With the dramatic increase of long-haul flights, it was decided to investigate if potential safet...

The operation of an industrial semi-batch reactor, in which the bulk chemical EHEC, ethyl hydroxyethyl cellulose, is produced, is studied and simulated. In the reactor a strongly exothermic polymerization reaction takes place followed by a slightly exothermic reaction, and we want to minimize the duration of the operation of the process. Various operational as well as quality and safety related...

Shrinking the engine has been a great interest for many years. Providing more amount of heat transfer may supply possibilities for size reduction in engine parts specifically the engine water jacket that is of concentration for the present study. Boiling phenomenon, by providing more amounts of heat transfer in comparison with single-phase, provides conditions for size reduction. In this paper ...