Improved modeling of rotary momentum mass transport equipment
Nyholm, Fredrik (2020)
Nyholm, Fredrik
Åbo Akademi
2020
Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2020063046420
https://urn.fi/URN:NBN:fi-fe2020063046420
Tiivistelmä
Pumps, compressors and turbines are vital parts of any process plant. Thus, accurate modeling of these machines is crucial for a dynamic process simulator, especially if the simulator is used for operator training. The operation of the machines is usually described by operating curves provided by the manufacturer, but these are strictly valid only for the set of process conditions they were created for. Accurately predicting the performance of the machines outside of the design conditions can be a challenging endeavor.
ProsDS is a software used by NAPCON to construct operator training simulators. In order to improve the performance of the compressors in these simulators, a new dynamic model for a centrifugal compressor was developed in ProsDS during the course of this thesis. The developed model was based on dimensionless operating curves defined by the head coefficient and the exit flow coefficient. Simple calculation of the outlet temperature and power consumption was also included.
The stability of the developed model was verified by dynamic ramp tests of the operating conditions. Furthermore, the accuracy of the developed model was determined by performing process data tests. The results were promising and, in most cases, an improvement from the performance of the currently implemented model, although some further development of the new model is needed to reach a fully acceptable accuracy of the performance.
ProsDS is a software used by NAPCON to construct operator training simulators. In order to improve the performance of the compressors in these simulators, a new dynamic model for a centrifugal compressor was developed in ProsDS during the course of this thesis. The developed model was based on dimensionless operating curves defined by the head coefficient and the exit flow coefficient. Simple calculation of the outlet temperature and power consumption was also included.
The stability of the developed model was verified by dynamic ramp tests of the operating conditions. Furthermore, the accuracy of the developed model was determined by performing process data tests. The results were promising and, in most cases, an improvement from the performance of the currently implemented model, although some further development of the new model is needed to reach a fully acceptable accuracy of the performance.