Solar XXI building

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General Information:

• Project name: Solar XXI
• Project type: new building
• Building type: Office building
• Building Typology: Non-residential
• Location: Portugal, Lisbon District , Lisbon Municipality
• Year of construction: 2004-2005
• Number of buildings: 1
• Number of floors: 3

 

Building Size:

• Gross floor area: 1500 m²
• Gross heated floor area: 1200 m²

 

Building Envelope:

• Exterior wall: 22 cm brick; 6 cm ETICS; U-value = 0.45 W/(m²K)
• Roof: 5 cm expanded polystyrene; 5 cm extruded polystyrene; U=0,26 W/(m²K)
• Basement floor / floor slab: 10 cm expanded polystyrene; U-value=0,8 W/(m²K)
• Windows and balcony doors: Double glazed windows; aluminum  scrolling  frame; U=3.5 W/(m²K)

 

Building service systems:

• Ventilation: natural  cooling  of  the  building, with external shading devices and passive  cooling  system  using  buried  pipes.
• Heating: Heat recovery on the inside face of photovoltaic modules assisted by a natural  gas  boiler in periods without sun.
• Photovoltaic installation: Installed capacity of 12 kW photovoltaic  modules  on  the  south  façade (100 m2 in  line  with  windows) and 6 kW of photovoltaic modules in the parking  lot .
• Building service systems:

Building energy performance:

• Annual heating demand: 12 kWh/m²a
• Cooling: 0 kWh/m².a
• Primary energy requirement: 2 kWh /m²a
• Renewable energy production: 54 kWh/dia

 Links for further information:

• http://www.lneg.pt/download/4079/BrochuraSolarXXI_Maio2010.pdf
• http://www.sciencedirect.com/science/article/pii/S1876610214004020
• http://www.rehva.eu/fileadmin/hvac-dictio/03-2012/case1—solar-xxi.pdf