Chiel Boonstra An Office Building Project Tax Office extension, Enschede Environmental design in...
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Transcript of Chiel Boonstra An Office Building Project Tax Office extension, Enschede Environmental design in...
![Page 1: Chiel Boonstra An Office Building Project Tax Office extension, Enschede Environmental design in practice.](https://reader035.fdocuments.in/reader035/viewer/2022062321/56649f275503460f94c3f180/html5/thumbnails/1.jpg)
Chiel Boonstra
An Office Building ProjectTax Office extension, Enschede
Environmental design in practice
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Tax Office Enschede
““One of the first real cases of One of the first real cases of
integrated passive design andintegrated passive design and
active occupant control”active occupant control”
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Energy Comfort 2000
European Thermie demonstration project
Building as an energy systemIntegrated passive design + active control strategiesImproved indoor environmentHigher productivity
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Key issues Tax Office
Site locationSite locationFlexibilityLow primary energy use
Passive ventilationPassive ventilation Daylighting conceptDaylighting concept Photovoltaic-cells
Occupant controlOccupant controlSustainable materials / water systems
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Site location
Former railway-areaClose to railway, regional and local bus stationClose to enschede city centre
Existing building retained through extension and renovation
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Passive ventilation-concept
Natural supplyNatural supplyVia wind-pressure independent vents in facades
Natural extractionNatural extractionVia chimneys on atrium
Mechanical extractionMechanical extractionUnder extreme low wind conditions and high temperatures
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Daylighting concept
High daylight windowHigh daylight windowSolar reflecting, light admitting glazing
LightshelfLightshelfEqual light distribution over office rooms
Low vision windowLow vision windowClear glazing + light regulation + solar shading
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Control strategies
Manual:Manual:Windows, air supply
Both:Both:Night ventilation, lighting, heating, shading
Automatic:Automatic:Exhaust
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EC 2000 monitoring programme
Breakdown of energy flowsLong term monitoring in typical roomsShort term monitoring, e.G. Airtightness
Occupant questionnaire according to format european AUDIT study in 50 buildings
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Conclusions monitoring
High user satisfaction: reduced absenceDaylighting and control appreciatedSummer temperature requirements are met
High reduction of electricity useHeating is 70% of total energy demand