ESTIMATION OF THE MAIN THERMAL CHARACTERISTICS OF BUILDING COMPONENTS USING PARAMETRIC MODELS IN MATLAB

This paper presents the application of IDENT Graphical User Interface of MATLAB to estimate the thermal properties of building components from outdoors dynamic testing, imposing appropriate physical constraints and assuming linear and time invariant parametric models. Theory is briefly described to provide the background for a first understanding of the used models. The relationship between commonly used RC-network models and the parametric models proposed is deduced. The analysis is generalised for different possibilities in the assignment of inputs and outputs and even multioutput.
A step by step guidance illustrated by an example is included. Results obtained using the different possibilities in selecting inputs and outputs are reported.