1. GROUP 4 Mikko Kaarakainen, Finland VAMK
Rene Paju Finland Metropolia UAS
Alexandra Ciocoiu, Romania Vasile Alecsandri
Keith Raekelboom, Belgium UA
Lukas Lazar, Germany HS Bremen
Iasonas Vovos, Greece UP

2. PROJECT VILLA

3. BUILDING Construction facts Usage Office building 12 employees
250 Working days / year
Construction date
Stone walls
Wooden doors
Wooden frames in roof, doors and windows
(30 cm concrete rings on top of the walls)
(concrete planes beneath the floor)

4. Lighting and other electricity
Current situation
HEATING
Lighting and other electricity
COOLING
Lightning is mixture of 60W incandescent lamps and 23W CFLs
Server computers
Computers
Radiators
Diesel boiler
Electrical hot water boiler
No mechanical ventilation
Chiller

5. CLIMATE

6. Simulation of villa
Design
Insert the data
Existing energy consumption

7. Results:
Cooling
Heating

8. Energy consumption Current situation Lightning: 5800 kWh
Computers: kWh
Servers, UPS, switches: (running through the year) kWh
Cooling: 8560 kWh
Heating: 6070 kWh
Total: kWh

9. Heating and Cooling

10. Constructional Improvements
Windows:
Current windows  U value of 4,8
Improve  use of silicone or a film
Or replace with double glazing
Expensive! But U value of 2,0
Insulation
Common U value in Greece = 0,7
Thickness: approximately 10 cm
Rockwool
Passive Ventilation: Chimney Effect

11. Electrical Improvements
Install consumption meters for measuring energy consumption
New LED lamps
Daylight controlled intelligent lightning system (DALI)

12. Intelligent lightning system

13. Energy consumption after improvements
Tighter windows, insulated roof, new lamps, lightning control system
Lightning (7 W LED): 832 kWh
Computers: kWh
Servers, UPS, switches: kWh
Cooling: 7240 kWh
Heating: 4400 kWh
Total: kWh

14. Annual savings With insulations and lightning improvements
Saved energy (0,15 €/kWh)
In heating
ΔE = 1670 kWh -> 250 €
In cooling
ΔE = 1320 kWh -> 200 €
In lightning
ΔE = 4970 kWh -> 750 €
Using mechanical ventilation
ΔE = 660 kWh -> 100 €
Total savings: 8600 kWh -> 1300 €

15. Improved Heating and Cooling System

16. What to improve Selling the Diesel heater New pump for heating cycle
New UV-opaque insulation outside
Renew pipe insulation
Install PV on the campus

17. HOUSE 1 New roof/fix it New plaster
 white plaster to reflect light/radiation
No insulation
 thick walls
PV panels on the roof
south orientation possible
Caps above the windows and doors
New doors
New windows
New water pipes
Connect electricity

18. HOUSE 2 Plaster on the outside walls Renovation of the balcony:
New plaster
New paint
New door

19. HOUSE 3 Best shaped building Only some slight changes:
New paint surface
etc

20. THANKS FOR YOUR TIME!