Energy2bisFinal conference
Wednesday 27 March 2013
VASLUI - ROMANIA
just introduce myself …
Project energy2bis What ?
• Start with energy monitoring in 100 buildings (40 Vaslui – 60 Flanders )– Gas – water – elektricity
• Important for energy certificates
• visualization of energy consumption• visualization of energy consumption
• Reports on the performance of buildings
• Auditreports– Stefan Procopiu Highschool
– Kindergarden 14
– Kogalniceanu Highschool
Energycertificates
• Romania/Flanders
– Obligatory certificate for every public building
– 3 (??) EPC’s in VASLUI
– 7009 in Flanders (12/2012)
http://www.epbd-ca.org/Medias/Pdf/country_reports_14-04-2011/Romania.pdf
Flanders
No labels A - … - G
Only energy use kWh/m²
hang in a visible place
Results project
• create energy awareness – web-site ALEEM
Energy2bis
Comparison Vaslui - Flanders
Difference
• A person responsible for heating
– Not in Belgium
• Much natural light in buildings
• little insulation• little insulation
• much improvement opportunities
• very polite students
Vaslui – RomaniaAverage EPC (kWh/m²) 38 shool buildings = 222 kWh/m²
400
500
600
0
100
200
300
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
EPC
Vlaanderen – BelgiëAverage EPC – 63 public buildings = 212 kWh/m²
400
500
600
EPCtotaal kWh/m²
0
100
200
300
400
1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344454647
EPCtotaal kWh/m²
Energy2bis - results
• greatly astonished small different in EPC value
– 222 (Vaslui) – 212 (Flanders) kWh/m²
• comparison is perhaps pointless• Flanders : to many different buildings• Flanders : to many different buildings
• Roemenia : only school buildings
School 7
• Heated surface = 1016 m² (old EPC = 520
kWh/m²)
• 2 level � roof = 508 m²
• U = 2,5 W/m².K• Uold = 2,5 W/m².K
• Unew = 0,4 W/m².K (10 cm PUR insulation)
• Profit = (Uold – Unew)*A*degree days*24
• Profit = 12% � new EPC = 454 kWh/m²
Comparison between Vaslui - GEELVASLUI GEEL
Stefan Procopiu Highschool Sint Dimpna college
General information
• Floor area = 20.063 m²
• Students = 2600
• Year of construction
1972
• Floor area 10.505 m²
• Students = 1200
• Year of construction :
1905 (1980 – 2002)
VASLUI GEEL
1972 1905 (1980 – 2002)
VASLUI
VASLUI
Gas consumptionVASLUI GEEL
Related consumption
• Degree days
– important to compare winters
– TMIN = 0° - TMAX = 12 ° � TGEM = 6°
• °d16,5 = 16,5 – 6 = 10,5 GD• °d16,5 = 16,5 – 6 = 10,5 GD
Related consumption
• Consumption of gaz 2006 : 37.875 m³
• Consumption gaz 2007 : 40.370 m³
Gaz consumption [m³/jaar] Degree days m³/GD
2006 37.875 1.870 20,252006 37.875 1.870 20,25
2007 40.370 2.240 18,02
Drop with 12 %
Gaz consumption <-> elektricity
VASLUI GEEL
• Gaz consumption
– 158,85 kWh/m²
• Elektricity cons.
– 30,73 kWh/m²
• Gaz consumption
– 51,4 kWh/m²
• Elektricity cons.
– 41 kWh/m²– 30,73 kWh/m²
• Total : (EPC value)
– 199,58 kWh/m²
– 41 kWh/m²
• Total : (EPC value)
– 92,4 kWh/m²
Temperature logging
Boiler
Temperature logging
Class room
Construction
• very thick masonry -
solid walls
– Thickness 50 cm
– High inertia
• wall with stationary air
– Thickness = 30 cm
– Low inertia
• Quick warming up
• Quick cooling down• Long warming up
• Long cooling down
• Quick cooling down
Recommendations
• Try to place some insulation
– For example : sloping roofs, flat roofs
• Easy and short return of investment
– be careful to insulate exterior walls– be careful to insulate exterior walls
• Thermal bridges
Boiler rooms
• are usually very nicely done
• Now days renovating boilers older then 15 years
• think carefully when renovating
• What for the next 15 à 20 years• What for the next 15 à 20 years
– Gas – oil – elektricity ???
– Heat pumps – Combined heat Power ??
– One thing is sure � It will be low temperature
• Floor heating – oversized radiators – wall heating
Final
• main objective has been achieved• started with energy accounting
• visualization of the results - website
• audits were conducted
• Many thanks to
– Major of Vaslui
– Mr Ionel Popa – Mr Stefan Dudau
– All the persons for collecting the data, visit the schools