Heat flow rates and temperature distributions in corners of external walls with non-isothermal surfaces

Abstract

The finite element method is employed to obtain rates of heat flow and temperature distributions in corners of insulated external walls with non-isothermal surfaces. A computer program is developed to solve steady-state heat flow problems in any two-dimensional body with various boundary conditions. The effects of positon, thickness and thermal conductivity of the insulation layer on the total rates of heat flow and temperature distributions are investigated. A quantity known as the insulation efficiency has been introduced as a measure of the percentage reduction in the total rate of heat flow due to the insulation.