mikko kaarakainen, finland vamk rene paju finland metropolia uas alexandra ciocoiu, romania vasile...
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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
GROUP 4
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)
BUILDINGConstruction facts Usage
Office building
12 employees
250 Working days / year
Current situation
HEATING COOLINGLighting and other electricity
No mechanical ventilation
Chiller
Lightning is mixture of 60W incandescent lamps and 23W CFLs
Server computers Computers
Radiators Diesel boiler Electrical hot water
boiler
CLIMATEClimate data for Patras
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Average high °C (°F) 14.5
(58.1)
15.0
(59)
16.8
(62.2)
19.7
(67.5)
24.2
(75.6)
28.0
(82.4)
30.1
(86.2)
30.9
(87.6)
28.2
(82.8)
24.1
(75.4)
19.5
(67.1)
16.1
(61)
22.3
(72.1)
Daily mean °C (°F) 10.3
(50.5)
10.7
(51.3)
12.3
(54.1)
15.0
(59)
19.1
(66.4)
22.7
(72.9)
24.8
(76.6)
25.3
(77.5)
22.7
(72.9)
18.9
(66)
14.9
(58.8)
11.9
(53.4)
17.4
(63.3)
Average low °C (°F) 6.1
(43)
6.4
(43.5)
7.7
(45.9)
10.2
(50.4)
13.9
(57)
17.4
(63.3)
19.4
(66.9)
19.6
(67.3)
17.2
(63)
13.8
(56.8)
10.3
(50.5)
7.6
(45.7)
12.5
(54.5)
Rainfall mm (inches) 89.1
(3.508)
81.7
(3.217)
63.3
(2.492)
47.8
(1.882)
28.9
(1.138)
7.5
(0.295)
4.6
(0.181)
5.2
(0.205)
28.3
(1.114)
72.2
(2.843)
118.0
(4.646)
116.1
(4.571)
662.7
(26.091)
Avg. rainy days 12.0 10.6 9.9 8.4 5.3 2.2 1.0 1.0 3.6 7.8 11.0 13.2 86
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
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)
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 €
Diesel Heater
oRadiator
Heat Pump
Electrical Power
Envi
ronm
enta
l Energ
y
Improved Heating and Cooling System
Selling the Diesel heater
New pump for heating cycle
New UV-opaque insulation outside
Renew pipe insulation
Install PV on the campus
What to improve
o New roof/fix ito New plaster
o white plaster to reflect light/radiation
o No insulation o thick wallso PV panels on the roof
o south orientation possibleo Caps above the windows and doorso New doorso New windowso New water pipeso Connect electricity
HOUSE 1
o Plaster on the outside walls o Renovation of the balcony:
o New plastero New paint
o New door
HOUSE 2