Two-zone house with a ground-coupled slab
Gypsum board
R
cond
=
0.011 K/W
Mineral wool
R
cond
=
0.185 K/W
OSB sheathing
R
cond
=
0.014 K/W
Brick outer leaf
R
cond
=
0.008 K/W
Outer face → air
R
conv
=
0.012 K/W
Steel lintel
R
lintel
=
0.42 K/W
Double glazing
R
win
=
0.31 K/W
Infiltration, 0.5 ACH
q
inf
=
185 W
Ground-floor slab
R
cond
=
0.6 K/W
Intermediate floor
R
cond
=
0.09 K/W
Open stairwell
q
stair
=
240 W
Roof → outdoor air
R
conv
=
0.14 K/W
Roof → sky
R
rad
=
0.22 K/W
Ground-floor air
C
gf
=
2.1 MJ/K
Upper-floor air
C
uf
=
1.8 MJ/K
Internal gains
P
int
=
600 W
Solar gain through glazing
q
sol
=
850 W
Upper-floor zone air
T
uf
=
23 °C
Ground-floor zone air
T
gf
=
21 °C
Board / wool
Wool / OSB
OSB / brick
Outer face
Outdoor air
T
out
=
-4 °C
Roof
T
roof
=
8 °C
Sky
T
sky
=
-15 °C
Deep ground
T
gnd
=
10 °C