Modeling and Experimental Validation of a Rankine Cycle Based Exhaust WHR System for Heavy Duty Appliations
To increase the efficiency of the engine is one of the biggest
challenges for heavy vehicles. One possible method is the Rankine
based Waste Heat Recovery. Crucial for Rankine based Waste Heat
Recovery is to model the temperature and the state of the working
fluid. If the state of the working fluid is not determined, not only
the efficiency of the system could be decreased, the components of the
system might be damaged.
A Simulink model based on the physical components in a system
developed by Scania is proposed. The model for the complete system is
validated against a reference model developed by Scania, and the
component models are further validated against measurement data. The
purpose of the model is to enable model based control, which is not
possible with the reference model. The main focus on the thesis is to
model the evaporation and condensation to determine state and
temperature of the working fluid. The developed model is compared to a
reference model with little differences for while stationary operating
for both the components and the complete system. The developed model
also follows the behavior from measurement data. The thesis shows that
two phase modeling in Simulink is possible with models based on the
physical components.
Carin Carlsson
2012
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Senast uppdaterad: 2021-11-10
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