Modelování a porovnání termodynamických modelů výměníku tepla v prostředí REXYGEN

Abstract

The thesis focuses on dynamic modeling of a shell-and-tube heat exchanger with the possibility of parameterization. For the purposes of real-time simulation, the implementation is carried out in the REXYGEN environment. The thesis proposes four levels of model variants. A two-state and a threestate lumped-parameter model, a model with an adaptive correction factor based on the LMTD concept, and a distributed model. The individual approaches are formulated as nonlinear state-space models integrated over time, and their behavior is compared under identical input conditions. Validation is performed exclusively on simulation data (without a physical device) using predefined test scenarios. The outcome of the thesis is an evaluation of the dynamic properties of the individual approaches based on previously defined assessment criteria.