Compactness, optimal placement, solar shading and building structure of a passive house school in Knivsta in Sweden!
News
September 14, 2015

Compactness, optimal placement, solar shading and building structure of a passive house school in Knivsta in Sweden!

Presentation by Archus Architects was presented at the 7PHN conference in Copenhagen in August 2015. The presentation describes the compactness of two adjacent buildings with the enclosing area towards total floor area (7,997 m3 / 6,235 m2 = 1.3), optimal placement on the building site in respect of getting the most of daylight conditions and three entrances with enclosed areas. The solar shading is fixed with canopies around dining room, boxes around windows and porches at entrances.

Furthermore, the exterior walls for floor 1 (underground) are built from load-bearing concrete structure of 200 mm and insulating layer 300 mm of expanded polystyrene (U-value = 0.12 W/(m².K). Exterior walls for floors 1-3 are made of load-bearing concrete structure of 150 mm, insulating layer of 350 mm, and lightweight stud and cellulose insulation resulting in U-value of 0.115 W/(m².K). Exterior walls for floor 4 consists from load-bearing structure of 145 mm made from timber stud with 45 mm insulation, insulating layer 350 mm lightweight stud and cellulose insulation resulting in total U-value of 0.10 W/(m².K). Ground slab is made from 300 mm insulation located under the concrete slab resulting in U-value of 0.12 W/(m².K). Flat roof has 600 mm of insulation (U-value = 0.065 W/(m².K)) and pitched roof has 400 mm of insulation (U-value = 0.10 W/(m².K)). Windows/glazed facade are triple glazed filled with argon with average value: 0.67 W/(m².K) and external doors have U-value of 0.90 W/(m².K). The building services are supplied by photo-voltaic system (30,000 kWh/year).

Presentation about school (link here).