IDP Library - Waasland

Reference person: Maria Victoria Cambronero (ACCIONA)
Simulation report:

Reference building

Name: Waasland
Location: Sint-Niklaas (BE)

General data

Urban context: suburban
Climate: H&CD
Building: purpose-built
Year of construction: 1972
Year of retrofit: 2002
GLA before retrofit [m²]: 47000
GLA after retrofit [m²]: -
Shopping centre size: Large
Shopping centre sub-typology: regional
Food store format: supermarket
Food store vending area [m²]: 3807
Tenants vending area [m²]: 29172
Common areas and galleries [m²]: 7934
Nr of opening hours per day [h/d]: 10.0
Nr of opening days per week [d/w]: 6
Nr of closing days per year (because of holidays) [d/y]: 9

Building features

Centre design: enclosed
Shape: 0.1
Orientation: SE/NW
Number of levels above ground: 1
Number of underground levels: 0.0
Parking location: ground and roof level
Number of parking levels: 2
Biologically active area [%]: 0%


Wall structure: pre-fabricated panels
Wall insulation location: interspace
Wall insulation material: oil derivatives
Wall U-value [W/m²K]: 1.160
WWR - north [%]: 22
WWR - east [%]: 28
WWR - south [%]: 22
WWR - west [%]: 28
Windows U-value [W/m²K]: 2.80
Window glazing g-value [-]: 1
Basement/Floor structure: concrete slab
Basement/Floor insulation location:
Basement/Floor insulation material:
Basement/Floor thermal transmittance [W/m²K]: 1.300
Roof structure: plane - pre-fabricated
Roof insulation location: in
Roof insulation material: oil derivatives
Roof U-value [W/m²K]: 1.500
Vehicle accessible roof covering [%]: 27%
Green roof covering [%]: 0
ST roof covering [%]: 0
PV roof covering [%]: 0
SRR [%]: 0
Skylight U-value [W/m²K]:
Skylight glazing g-value [-]:

Technical room

Location: roof
BMS lighting [Y/N]: Y
BMS natural ventilation [Y/N]: Y
BMS refrigeration [Y/N]: N
BMS solar thermal system [Y/N]: N
BMS electric storage [Y/N]: N
Ventilation specific power [Wh/m³]: 0.45
Heat recovery thermal efficiency [%]: 0
SPF heating [-]: 1.10
SPF cooling [-]: 2.80

Common areas

Installed lighting power density [W/m²]: 35
Installed electric equipment power density [W/m²]: 10


Installed lighting power density [W/m²]: 40
Installed electric equipment power density [W/m²]: 10

Food store

Installed lighting power density [W/m²]: 40
Installed electric equipment power density [W/m²]: 20

Primary energy consumption

Lighting [kWh/m²-y]: 380
Refrigeration [kWh/m²-y]: 0
Plug loads [kWh/m²-y]: 141
HVAC [kWh/m²-y]: 257
Tot. primary energy [kWh/m²-y]: 778

Carbon emissions

Carbon emissions [tonCO2eq]: 6481


Envelope ineff.1: No insulated external doors
Envelope ineff. 2: Missing daylighting panels
Envelope ineff. 3: Inefficient insulation
Lighting ineff.1: Inefficient lamp technology and inefficient luminaires
Lighting ineff. 2:
Lighting ineff. 3:
Refrigeration ineff. 1:
Refrigeration ineff. 2:
Refrigeration ineff. 3:
HVAC_general general ineff.: Lack of bioclimatic solutions
HVAC_general general ineff.: Boilers without flue gas economizers
HVAC_heating heating ineff.: Missing air preheaters
HVAC_heating heating ineff.:
HVAC_cooling cooling ineff.: Missing TES
HVAC_cooling cooling ineff.:
HVAC_ventilation ventilation ineff.: Lack of bioclimatic solutions
HVAC_ventilation ventilation ineff.: Lack of recovery systems and "recycling" of energy

Retrofit solution set I

Solution set I ID: 11
Primary energy consumption [kWh/m²-y]: 319
Primary energy savings [%]: 59%
Carbon emissions tonCO2eq: 2826
Carbon emission savings [%]: 59%
Investment cost [M€]: 4.28
Operational energy cost [k€/year]: 626
Pay-back time [years]: 5.7
Net Present Value [M€]: 17
Maintenance cost [k€/year]: 278

Retrofit solution set II

Solution set II ID: 12
Primary energy consumption [kWh/m²-y]: 320
Primary energy savings [%]: 59%
Carbon emissions tonCO2eq: 2870
Carbon emission savings [%]: 56%
Investment cost [M€]: 4.8
Operational energy cost [€/year]: 506
Pay-back time [years]: 5.9
Net Present Value [M€]: 14
Maintenance cost [€/year]: 345

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