Teenergy School | High energy efficiency schools in ......Energy Performance Index for heating Epi11,2 kWh/m3 year 42 kWh/m2 year Building insulation - to be installed Shading devices

Pilot Projects Proceedings

Teenergy School | High energy efficiency schools in Mediterranean Area

February 25th 2009 | Palermo| International Workshop

Arch. Sabrina Buttitta

Arch. Carola Arrivas Bajardi

Trapani

Marsala

Salemi

Alcamo

Partanna

Pilot Projects

Benchmarks


Arch. Sabrina Buttitta - Arch. Carola Arrivas Bajardi

REGIONAL ENVIRONMENTAL PROTECTION AGENCY OF SICILY

Pilot Project N 1 - Secondary School for the Study of Umanities “D’Agguire”

B

A

Foto A

General informations

Municipality: Salemi

Location: MOUNTAIN

Year of construction: 1988

Altitude: 446 m

Latitude: 37.49 N

Longitude: 12.48 E

Climatic zone: C

Degree day: 1203

Foto B




Building Functions

Total floor area: 2656 m2

Ground floor area: 1478 m2

First floor area: 1178 m2

Halls and corridors 32%

19% ClassroomsN° of teachers: 20

N° of students: 220

Other employes: 14




Building Description: the external walls

External walls in reinforced concrete

Area-weighted average U: 1,82 W/m²K

N Description of wall layers Thickness

1 glass blocks 0,162 cellular concrete 0,3

3 Lime cement plaster 0,02

U limit for zone C: 0,40 W/m²K

DLgs 311/2006, transposing the Directive 2002/91/EC, Energy Performance of Buildings (EPBD).

General data

Thickness: 0,48 m

Surface mass: 556,00 kg/m²

Resistance: 2,69 m²K/W

Transmittance: 0,37 W/m²K

Attenuation factor: 0,04

Offset: 19h 56'

Dynamic parameters




General data

Thickness: 0,32 m





Offset: 8h 44'

Dynamic parameters

General data

Thickness: 0,22 m





Offset: 5h 36'

Dynamic parameters

Building Description: the roof

U limit for zone C: 0,38 W/m²K

(DLgs 311/2006, transposing the Dir.

2002/91/EC, Energy Performance of Buildings (EPBD))

N Description of Roof (A) layers Thickness

1 tiles 0,01

2 Cement mortar 0,05

3 Brick based slab 0,24

4 Plaster of lime and gypsum 0,02

Roof A

A

B

N Description of Roof (B) layers Thickness

1 Bitumen polymer 0,004

2 Cement plaster 0,2

3 Plaster of lime and gypsum 0,02

Roof B




Building Description: the windows and the skylights

Aluminium frame window with double glass:6,1 W/m2K

U limit, zone C: 2,6 w/m2k(DLgs 311/2006, Dir.2002/91/EC)




ORIENTATION FLOOR N. OF WINDOWS WINDOWS (m2) TOTAL (m2)

F0 80 96F1 113 251F0 2 14F1 2 14F0 48 78F1 105 252F0 3 16F1 - -

S 347

E 29

N 330

O 24

N

O

S

E

Electrical and natural illumination

The 58 % of the building’s total floor area

(central corridor, gymnasium, halls) don’t

need the lights turned on for most of the

time.

The 1,4% of the building’s total floor

area (lateral corridor, vestibule) need

continuous electrical lighting.




Gas consumption _Year 2008/2009

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m3

Electricity consumption _Year 2008/2009

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kWh

Energy consumption:

Year: 2008/2009

Gas: 7385 m3

Electricity: 59604 kWh

The heating season

in Zone C begins in

15th of November

and ends in the 31th

of March (10h/day),

as the DPR 412/93

Heating system:

central gas heater

used 9h/day

Cooling system:

split units

Energy Profile of the building:




Year 2008-2009

S/V: 0,6

Total Heated Floor Area: 1324 m2

Total Heated Gross Volume: 6051 m3

Critical aspects of actual energy use and sector that needs improvement:

Operating assessment




E nerg y cons umption for electric ity 10 kWh/m3 year

45 kWh/m2 year

E nerg y cons umption for heating 13 kWh/m3 year

58 kWh/m2 year

E nerg y P erformance Index for heating E pi 11,2 kWh/m3 year

42 kWh/m2 year

Building insulation - to be installed

Shading devices – to be installed

Passive cooling and ventilation - to be improoved

Energy efficient lighting – to be improoved

Building’s Management System – to be implemented

Occupants’ awareness – not present

Energy consumption for heating: Epi (kWh/m3 year)= 13 kWh/m3 year

Energy Performance Index Epi_Lim_CE: 11,27 kWh/m³ year

OPERATING ASSESSMENT (YEAR 2008-2009)




ENERGY CLASS SIMULATION (SOFTWARE TERMUS)

Software Termus:

• 24h/d * 137d/yr= 3288h/yr

• 15 November - 31 March

(UNI TS 11300, Zone C)

School heating:

• about 9h/d * 103 d/yr= 927h/yr

15 November - 31 March

For this reason the Termus

result is about 2,7 times more

than the operating results.

41,9 / 3,5 = 12 kWh/m3 year

Pilot Project N 2 - Secondary School for Educational Studies “Rosina Salvo”

A

Foto A

Municipality: Trapani

Location: COASTAL

Year of construction: 1950/55

Altitude: 273 m

Latitude: 38 1'1"56 N

Longitude: 12 32'43"08 E

Climatic zone: B

Degree day: 810




Building Functions

Total floor area: 3627 m2

Ground floor area: 1190 m2

First floor area: 1258 m2

Second floor area: 1196 m2

Occupants

N° of teachers: 36

N° of students: 795

Other employes: 22

% of building floor area

38% Classrooms




Thickness: 0,55 m





Offset: 19h 29'

General data

Dynamic parameters

Building Description: the external walls

U limit for zone B: 0,48 W/m²KDLgs 311/2006, Dir. 2002/91/EC (EPBD).

Calcareous sandstone

(local quarries).

Excellent characteristics

of thermal inertia, suited

to Mediterranean climate.

N Description of wall B layers Thickness


2 Blocks of calcareous sandstone 0,5


Problems related tothe esternal walls:

rising dump




ORIENTATION FLOOR NUMBER AREA (m2) TOTAL (m

2)

F0 12 33

F1 16 37

F2 13 37

F0 10 31

F1 7 38

F2 12 38

F0 20 58

F1 19 75

F2 22 75

F0 19 49

F1 22 68

F2 20 61

N 107

S 108

O 209

E 178

Building Description: the windows

Aluminum frame without thermal break

double glaze: U: 4,5 w/m2k

U limit, zone B: 3 w/m2k

(DLgs 311/2006, Dir.2002/91/EC)




Energy consumption:

Year: 2008/2009

Gas: 7983 m³

Electricity: 63.365 kWh

Heating system:

Central gas heater

Cooling system:

Split units

Energy Profile of the building:




Year 2008-2009

Total Heated Floor Area:

1324 m2

Total Heated Gross Volume:

6051 m3

S/V: 0,4

Critical aspects of actual energy use and sector that needs improvement:

Operating Assessment




Building insulation - to be installed

Passive cooling and ventilation - to be installed

Energy efficient lighting – to be improoved

Building’s Management System – to be implemented

Occupants’ awareness – not present

Energy consumption for electricity 3,8 kWh/m3 year

18,1 kWh/m2 year

Energy consumption for heating 4,9 kWh/m3 year

23,7 kWh/m2 year

Energy Performance Index for heating Epi 5,5 kWh/m3 year

20,9 kWh/m2 year

Energy consumption for heating: Epi (kWh/m3 year)= 4,9 kWh/m3 year

Energy Performance Index Epi_Lim_CE: 4,35 kWh/m³ year

OPERATING ASSESSMENT (YEAR 2008-2009)




ENERGY CLASS SIMULATION (SOFTWARE TERMUS)

Software Termus:

• 24h/d *121 d/yr= 2904 h/yr

• 1 December - 31 March

(UNI TS 11300, Zone B)

School heating:

• about 5h/d *91 d/yr=455 h/yr

• 1 Dicember- 31 March

For this reason the Termus

result is about 5 times more

than the operating results.

26,2 / 5,8 = 4,5 kWh/m3 year

Documents

Teenergy School | High energy efficiency schools in ......Energy Performance Index for heating Epi11,2 kWh/m3 year 42 kWh/m2 year Building insulation - to be installed Shading devices