GB 50189-2015 第3.3.3条
| **** | **Thermal performance limits of building envelope (cold zone)**: Roof K≤0.45 W/(m²·K); exterior wall (including opaque curtain wall) K≤0.60 W/(m²·K); elevated or cantilevered floor slab in contact with outdoor air at the underside K≤0.60 W/(m²·K); partition wall or floor slab between unconditioned and conditioned spaces K≤1.5 W/(m²·K). |