DYNAMIC-MODEL IDENTIFICATION APPLIED TO THE MEASURING OF THERMAL STATIC CHARACTERISTICS OF BUILDINGS

This study is devoted to the measurement of thermal characteristics of buildings: heat loss coefficient, equivalent solar aperture, thermal resistance of walls and main time constants. A set of measured data, that is temperatures and heat flux, pass through a parameter estimation algorithm to give a thermal dynamic model of the studied system (building or wall). Then static characteristics are derived. Measuring procedures are described and case studies show results whose reliability, 10-20% precision, permit a valid energy diagnosis to be made of an unoccupied building and of existing walls.