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2. Team Giovanni‘s Angels Benjamin Bremen Germany Venia Patra Greece Arjen Groningen The Netherlands Tom Stralsund Germany Diana Bacau Romania Elina Vaasa Finland 2

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4. Structure  Other assignments  History of the villa  Current situation and problems  Solutions  Results  Chimney effect  Conclusion 4

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8. Rules:  No smartphones during the meetings  Don‘t interrupt each other  Responsibility, Respect and listen to everyone‘s ideas 8

9. Replace windows,doors and roof Heating pump Trees for heating Make extra layer inside for insulation 5 Buildings Repair cracks 9

10. Double glazing windows Replace the shutters Higher trees 10

11. History 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 11

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14. Heating system  Remove the diesel heating system  New boiler 500 l  New heating pump 20-40 W  Air-conditioning system  Cost: 2700 euro 14

15. RoofGround Floor MaterialsStrawGlass wool Thickness40 cm10 cm Conductivity0.045 W/m*K0.035 W/m*K Cost3 €/m²5 €/m² Insulation Roof & Floor Current SituationStraw + Glass Wool 100 %80 % 15

16. Double GlazingStrips Numbers of Windows: 28 300 €/window12 €/window Insulation Windows Current SituationDouble Glazing 100 %98 % 16

17. Lighting System  51 New Bulbs: 408 W  350 €  Controlling Unit  1000 € Current SituationWith new Light BulbsWith LB + CU 100 %20 %11 % 17

18. 18 OldNew Heating [kWh]1110014000 Cooling [kWh]3500025000 Lighting [kWh]255002800 Total [kWh]7160041800 29800 kWh savings in 1 year 42 % reduction Energy Calculation

19. Money Calculation OldNew Heating [€]2400017000 Cooling [€]4100030000 Lighting [€]450005000 Total [€]11000052000 19 58000 € savings in 10 years 53 % reduction 1 year payback time

20. 20 Winter

21. 21 Summer Server

22. Conclusion (in 20 years…) 22

23. Questions? 23