Technical gazette, Vol. 15 No. 3, 2008.
Preliminary communication
IMPROVEMENT OF STEAM BOILER PLANT EFFICIENCY BASED ON RESULTS OF ON-LINE PERFORMANCE MONITORING
Indira Buljubašić
orcid.org/0000-0001-5346-9353
; University of Tuzla, Faculty of Mechanical Engineering, Bosnia and Herzegovina
Sead Delalić
; University of Tuzla, Faculty of Mechanical Engineering, Bosnia and Herzegovina
Abstract
A process of performance monitoring of a steam boiler means continuous evaluation of plant's efficiency over time using measured plant data. These evaluations are repeated at regular time intervals using data readily available from on-line instrumentation. The objective of performance monitoring is continuous evaluation of degradation, i.e. a decrease in performance of the steam boiler. These data enable additional information which is helpful in problem identification, improvement of plant performance and making economic decisions about maintenance schedule. All these actions are aimed towards optimization of boiler performance. Every performance monitoring system involves comparison between current (measured) and expected parameters of performance. The procedure to calculate expected performance of a steam boiler is to start with the expected performances at the reference operating conditions and then use a model to predict the change in boiler performance when it is operated at conditions different from the reference operating conditions. In this paper, a GateCycleTM physically based computer model of existing 200 MW coal-fired steam boiler is presented. Further use of this model is multiple: prediction of boiler performance parameters for different loads or changes of single or multiple input parameters, comparison of model predictions with real measured data in order to track problems and optimize boiler performance, predictions of possible re-engineering effects of the existing plant when changing one or more of its equipment elements.
Keywords
efficiency; steam boiler; coal; performance monitoring; computer model
Hrčak ID:
28545
URI
Publication date:
1.10.2008.
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