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Building corner thermal insulation

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External corners of the building walls are responsible for major heat losses, so it is important to take additional measures to insulate them.

Task type
Plane-parallel problem of heat transfer.

Geometry
Building corner thermal insulation External corners of the building walls are responsible for major heat losses, so it is important to take additional measures to insulate them. Plaster Brickwork 660 mm 660 mm T = +20°C α = 8.7 W/m²C T = -20°C, α = 14 W/m²C

Given
thermal conductivity of brickwork: 0.8 W/K-m
thermal conductivity of plaster: 0.93 W/K-m
air temperature outside: -20 °C, convection coefficient: 14 W/K-m²
air temperature inside: +20 °C, convection coefficient: 8.7 W/K-m²;

Task
Plot temperature fields of various options for external corners thermal insulation.

Result
Temperature distribution and dew point isotherm (10.7°C) for the initial wall corner structure (A) and for the different insulation design options:
B. Rounding the inner corner with plaster
C. Rounding the corner of a wall with bricks
D. Adding the brick layer to the outside corner surface
thermal field of the outer corner of the wall