Building envelope

Structure

Heat transfer coefficient K_i [W/(m²・K)]

Heat transfer area F_i [m²]

Correction coefficient ε_i

Roof

From top to bottom: decorative surface layer for 50 mm, stone concrete cover for 40 mm, waterproof layer for 400 mm, slope layer for 20 mm, polystyrene board insulation layer for 80 mm, cement mortar for 1:3, reinforced concrete for roof slab

0.394

117.07

0.94

Exterior wall

From the inside out: mixed mortar for 20 mm, solid brick for 240 mm, adhesive and cement mortar leveling layer for 30 mm, polystyrene board insulation layer for 80 mm, anti-crack mortar and alkali-resistant fiberglass mesh for 5 mm, decorative surface layer for 15 mm

0.393

South 25.23

South 0.82

North 22.56

North 0.95

East 26.17

East 0.91

West 26.17

West 0.90

Window

Double glazed windows, glass thickness 4 mm, air layer thickness 12 mm

2.92

South 2 windows: 2.43

South 0.43

Nouth 2 windows: 2.43

North 0.75

Door

2

Double open security doors 4.68

1.1

Ground

concrete base for 100 mm, cement mortar leveling layer for 20 mm, reflective layer of aluminum foil anti―radiation layer for 0.05 mm, extrusion polystyrene board insulation for 60 mm, concrete filling for 50 mm, cement mortar leveling layer for 20 mm, floor tile ground floor for 8 mm

0.35

117.07

1