Division | Unit | General MDU to which the Energy Saving Design by year is applied | Passive MDU |
2001 | 2008 | 2011 | 2013 |
Window/door U-value | Outdoor air direct | W/m2K | 3.84 | 3.0 | 2.1 | 1.5 | 0.89 (South), 1.0 (North, east, west) |
Outdoor air indirect | W/m2K | 5.47 | 4.3 | 2.8 | 2.2 | 1.0 |
Type of frame | mm | PVC 115 mm | PVC 115mm | PVC 225mm | PVC 225mm | PVC 270mm |
Type of pane | mm | 16mmdouble-glazed(5CL+6Air+5CL) | 22mm double-glazed(5C+12Air+5CL) | 22mmdouble low-e glazing(5LE+12Ar+5CL)+6mm single glazing(6CL) | 22mmdouble low-e glazing(5LE+12Ar+5CL)+22mm double low-e glazing(5CL+12Air+5CL) | 22mmdouble low-e glazing(5LE+12Ar+5CL) + 39mm triple low-e glazing(6LE+12Ar+3CL+12Ar+6LE) |
SHGC value | | 0.747 | 0.748 | 0.538 | 0.493 | 0.358 |
Type of door | | Ordinary fire door | Insulated fire door |
Wall U-value | Outdoor air direct | W/m2K | 0.47 | 0.47 | 0.36 | 0.27 | 0.15 |
Outdoor air indirect | W/m2K | 0.64 | 0.64 | 0.49 | 0.37 | 0.39 |
Wall insulation method | | Internal insulation | Internal insulation | Internal insulation | Internal insulation | Outside insulation |
Type of insulation | | Extrusion #1, density 30kg/m3, U-value 0.028 | Diverse insulation applied (see Table 3) |
Insulation thickness | mm | 65 | 65 | 85 | 120 | 115~225 |
Type of ventilation system | | Air-supply and exhaust ventilation system | Heat recovery ventilation system |
Total ventilation time(including infiltration) | time/h | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
Number of household vertical ducts | unit | 3 | 3 | 3 | 3 | 3 |
Infiltration rate (@50 Pa) | time/h | 3 | 2 | 1.7 | 1.5 | 0.8 |
Ventilation rate for ventilation load | time/h | 0.5 | 0.5 | 0.5 | 0.5 | 0.248 |
Waste heat recovery system efficiency | % | - | - | - | - | 75 |
Type of boiler | | Individual gas boiler | Pallet boiler |
Boiler efficiency | % | 80 | 80 | 87 | 87 | 87 |