Wall insulation
Thickness to R=3.3 + payback
Input
Thickness
cost: 23 760 ₴
90 мм
- Savings/yr
- 9 818 кВт·год
- In money
- 25 527 ₴
- Payback
- 0,9 yrs
UA norm: R ≥ 3.3 m²K/W for walls. Thickness = (3.3 − R_wall) × λ. Losses through bare brick ~60 W/m² at −20°C; after 100 mm mineral wool ~12 W/m².