Energy2bisBoiler rooms •are usually very nicely done •Now days renovating boilers older then 15...
Transcript of Energy2bisBoiler rooms •are usually very nicely done •Now days renovating boilers older then 15...
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
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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
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EPCtotaal kWh/m²
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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