THERMAL DETERIORATION MAP BASED ON BLACK PANEL TEMPERATURES SET AT HORIZONTAL, TILTED AND VERTICAL POSITIONS

Abstract

Heat is one of degradation factors for polymeric building materials. Black panel temperature(BPT), index of thermal degradation environment, was monitored at horizontal, tilted and vertical positions for 4 years to be expressed as function of ambient temperature, wind velocity and solar radiation. The hourly BPT was estimated referring JMA's meteorological data around Japan for 1991 to 1998 and thermal deterioration amount was estimated based on Arrhenius' Model. The results were plptted on maps, which would be used for the analyses of the local difference of weatherability.