A - area (㎡)
T
i
- indoor temperature (℃)
T
e
- outdoor temperature (℃)
h
ci
- convective heat transfer coefficient indoor (W/(㎡ K)
x
1
- thickness 1 (mm)
k
1
- thermal conductivity wall 1 (W/(m K)
x
2
- thickness 2 (mm)
k
2
- thermal conductivity wall 2 (W/(m K)
h
co
- convective heat transfer coefficient outdoor (W/(㎡ K)
Calculate
