On the distortion of thermal flux and of surface temperature induced by heat flux sensors positioned on the inner surface of buildings

The aim of this paper is the evaluation of the deflection of the heat flux of external walls of a building provoked by heat flux sensors (HFS) owing to their different thermal conductivity compared to the conductance of the wall on which they are positioned. In order to do this evaluation, a finite differences calculation algorithm was developed and implemented on PC, which allowed the comparison between the experimental and calculated values of temperature and heat flux for the walls containing a sensor for the in situ evaluation of transmittance.