PARAMETER IDENTIFICATION UNDER DIFFICULT CONDITIONS – HOW MUCH INFORMATION IS CONTAINED IN THE OBJECTIVE FUNCTION?

Parameter identification techniques are a powerful tool for the determination of thermophysical properties of building components. However, their correct application often demands a certain degree of experience.Especially in short or/and heavily disturbed data sets a formal use of a parameter identification software can lead to completely wrong results.This paper illustrates these problems by means of some simulation calculations and encourages to a discussion about possible solutions.