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
PROJECT VILLA
BUILDING Construction facts Usage Office building 12 employees 250 Working days / year Construction date 1910-1920 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)
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
CLIMATE
Simulation of villa Design Insert the data Existing energy consumption
Results: Cooling Heating
Energy consumption Current situation Lightning: 5800 kWh Computers: 10800 kWh Servers, UPS, switches: (running through the year) 39000 kWh Cooling: 8560 kWh Heating: 6070 kWh Total: 75000 kWh
Heating and Cooling
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
Electrical Improvements Install consumption meters for measuring energy consumption New LED lamps Daylight controlled intelligent lightning system (DALI)
Intelligent lightning system
Energy consumption after improvements Tighter windows, insulated roof, new lamps, lightning control system Lightning (7 W LED): 832 kWh Computers: 10800 kWh Servers, UPS, switches: 39000 kWh Cooling: 7240 kWh Heating: 4400 kWh Total: 66400 kWh
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 €
Improved Heating and Cooling System
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
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
HOUSE 2 Plaster on the outside walls Renovation of the balcony: New plaster New paint New door
HOUSE 3 Best shaped building Only some slight changes: New paint surface etc
THANKS FOR YOUR TIME!