2
Team Giovanni‘s Angels
BenjaminBremenGermany
VeniaPatraGreece
ArjenGroningenThe Netherlands
TomStralsundGermany
DianaBacauRomania
ElinaVaasaFinland
4Structure
Other assignments
History of the villa
Current situation and problems
Solutions
Results
Chimney effect
Conclusion
8Rules:
No smartphones during the meetings
Don‘t interrupt each other
Responsibility, Respect and listen to everyone‘s ideas
9• Replace windows,doors and
roof • Heating pump• Trees for heating
• Make extra layer inside for insulation
5 Buildings
• Repair cracks
11History of the Villa
Built in the late 19th century
Owned by the Kollas family
Eclectic type with northern characteristics
385 m²
Renovated in 80’s
Presently an office departement
14Heating system
Remove the diesel heating system
New boiler 500 l
New heating pump 20-40 W
Air-conditioning system
Cost: 2700 euro
15
Roof Ground Floor
Materials Straw Glass wool
Thickness 40 cm 10 cm
Conductivity 0.045 W/m*K 0.035 W/m*K
Cost 3 €/m² 5 €/m²
InsulationRoof & Floor
Current Situation Straw + Glass Wool
100 % 80 %
16
Double Glazing Strips
Numbers of Windows: 28
300 €/window 12 €/window
InsulationWindows
Current Situation Double Glazing
100 % 98 %
17Lighting System
51 New Bulbs: 408 W
350 €
Controlling Unit
1000 €
Current Situation With new Light Bulbs
With LB + CU
100 % 20 % 11 %
18
Old New
Heating [kWh] 11100 14000
Cooling [kWh] 35000 25000
Lighting [kWh] 25500 2800
Total [kWh] 71600 41800
29800 kWh savings in 1 year
42 % reduction
Energy Calculation
19Money Calculation
Old New
Heating [€] 24000 17000
Cooling [€] 41000 30000
Lighting [€] 45000 5000
Total [€] 110000 52000
58000 € savings in 10 years
53 % reduction
1 year payback time