Gray-box state-space model and parameter identification of desiccant wheels

► A non-linear state space-model is obtained from energy and mass balance. ► Data for non-linear model identification are obtained experimentally. ► Model parameters are identified by least squares and Gauss-Newton methods. ► A single gray-box model captures the dynamics of the desiccant wheel for each side. ► This allows to use in control loops a single model on the entire operating range.