Visualization of Water Vapor Diffusion in ExternaI Thermal Insulation Materials Systems

(No. 2)-Aiming at Improvement of Effectiveness Using Open Data of Diffusion Coefficients of Water Vapor -

Abstract

In the previous report, visualization of water vapor diffusion processes in external thermal insulation materials systems was tried. An idea of setting service life of these systems was shown when overall heat transfer coefficient increases to 120% from the initial value (thermal insulation performance reduces to 83%). Recently, open data of thermal conductivities, vapor dufusion coefficients etc. of polmeric finishing materials, thermal insulation materials and concrete were obtained were obtained by internet.Using hese open data, and the newest mathemaical sofware of mathematica er.11.1 , fruitful route of makng effectie of numerical analysis was found.This research is helpful as setting methods of service life of external thermal insulation materials systems.