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 …

paul.de.schepper@khk.be

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