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    A2_Boonstra A2_Boonstra Presentation Transcript

    • Passive Housing in Europe innovation in construction Chiel Boonstra
    • all CEPHEUS projects 0 50 100 150 200 250 300 350 400 450 1 6 11 16 21 26 31 36 41 46 51 56 61 1 6 11 16 21 26 31 36 41 3 8 13 18 23 4 8 12 19 23 3 8 13 18 23 28 annual heat consumption [kWh/(m²a)] 63 row houses in Heidelberg (Bj. 1962) 41 low energy houses Niedernhausen 1991 27 low energy houses, Hessia 22 houses, PH settlement Wiesbaden 1997 32 passive houses Kronsberg 1998 180 66 74 Benutzereinfluss im Passivhaus occupants influence: the average is important old buildings low energy buildings passive houses 13.4 14.9 © Helmut Krapmeier / EIV and Wolfgang Feist / PHI > 90% reduc- tion
    • Passive House
      • European Commission Energy Action Plan:
      • Passive House standard must be the norm for new housing by 2015
      • UK Government
      • Passive house by 2012
      • Zero carbon by 2016
    • Where do we stand
      • 200 kWh/m2 - existing building stock
      • 100 kWh/m2 – standard renovation
      • 50 kWh/m2 – new homes
      • 30 kWh/m2 – 3 liter house
      • 15 kWh/m2 – passive housing
    • Passive house – The concept 0 20 40 60 80 100 120 140 0 10 20 30 40 50 60 70 80 90 100 Specific heat demand [kWh/(m²a)] Capitlized costs [€/m²] Total costs Energy costs Construction costs E-new buildings Cost reduction: simplified heating system Passive House with compact system
    • Quality criteria
      • Heat demand less than 15 kWh/m2
      • Total energy less than 120 kWh/m2 in primary energy
      • Passive House Certificate
      • [Note: electricity has factor of over 2.5]
    • 15 kWh/m2
      • Continuous insulation
      • U values in range of 0.10 – 0.15 W/m 2 K
      • U glazing in range of 0.5 – 0.8 W/m 2 K
      • U window frames around 0.8 W/m 2 K
      • No thermal bridges
      • No unwanted air leakage
    • 15 kWh/m2
      • A breathing indoor environment
      • Balanced ventilation with heat recovery
      • Operable windows
      • Summer night ventilation
    • Summer night ventilation
      • Ventilation rate between 4 – 20 depending on climate and temperature difference
      • Night ventilation allows building to cool during evenings and night
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    • The two remaining energy uses in passive house require
      • Low energy domestic hot water system
      • read as solar collector for DHW
      • Low energy electrical appliances
      • read as devices with real on/off buttons
      • read as connecting drying, and washing to heating and ventilation
    • Nieuw Terbregge Rotterdam Low Energy Demand Solar thermal collectors Combined Heat and Power
    • Why should we do it
      • Need for a robust standard, which may survive next 50 years
      • New distributed energy generation does not come in large quantities
      • Small energy demand can be met by high % renewable energy
    • Why should we provide it
      • Rational approach
        • high performance building envelope
        • design flexibility
      • Good quality construction work
      • Better life cycle costs
      • Healthy buildings with low carbon impact
    • Why should people buy it
      • Good location
      • Nice buildings to live in
      • Services and amenities around
      • Extremely low energy costs
      • Extremely good comfort
      • so …
      • Good value for money
    • Quote from Austria
      • How do people experience their passive house?
      • Room air temperature more comfortable (than in previous house) in winter
      • Warm wall surface temperature very positive, no cold feet
      • Ventilation system overall very good! (no excessive air stream)
      • Lots of natural lighting in the living rooms
      Source: Ecotech, Austria
    • But … can we build it ?
      • Recent study in The Netherlands showed that passive housing can be done in all major construction methods
      • Tunnel walls + concrete floors
      • Calcium silicate + concrete floors
      • Timber frame + floors
      DHV BAM VDM Rockwool Builddesk Passiefbouwen.nl
    • Passive Houses in Austria
      • 5% of all new houses are built in passive house standard
      • In 2010 it is expected to have 25% - 40% of all new houses in passive house quality
    • TRECO European Housing Associations choose for Passive Housing
      • Alingsashem, Sweden: 100% of stock
      • Midland Heart, Coventry: 25% of new
      • Aramis, The Netherlands: 100’s passive renovation
      • Logirep, France: Pilot demonstration in Paris
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    • Hans Eek
    • Brogården, Alingsåshem after renovation Decentral ventilation with heat exchanger Efficiency > 85 % 35 cm isolation in walls U = 0,12 W/m2, K 3-pane windows U= 0,85 Entrance doors (porch) U = 0,8 New exterior balconies without thermal bridges Air tightness 0,4ach at 50 Pa 5 cm isolation on the existing roof 38 cm isolation in the attic U-value ca 0,20 W/m2, K Energy performance: (kWh/m2, year) 22 degrees indoor temp 2006-03-06 HE Space heating: 27 Domestic hot water: 25 Houshold electricity: 27 Common electricity: 13 Summary: 92 11 cm isolation, U = 0,14
    • Passive highrise in Coventry
      • Client: Midland Heart
      • Architect: IDPartnership
      • Energy consultant: Trecodome
      • www.trecodome.com
      [email_address]
    • Design Strategy Source: SINTEF, Norway The Kyoto Pyramide Passive energy design process Reduce heat loss Select energy- source Display and control energy consumption Utilize solar heat Reduce electricity consumption
    • Towards zero emission
      • Passive House standard to achieve low energy demand
      • On site renewable energy to cover a significant part of the energy balance
      • Off site renewables help improve the overall performance of the energy grid
    • energy demand on site renewables CO 2 emission offsite renewable energy Green electricity Offshore wind
    • Energy = new market paradigm
      • Low carbon legislation will come
      • House Builders have got new competitors: the new energy providers
      • The question is who will benefit: the House Builders or the energy providers
      • And what the costs of living shall be
      • Passive House offers the answers
    • Local authorities
      • Local authorities can play a major role in demanding low energy demands of buildings
      • There is a lot of local labour needed to improve the existing stock
      • Low energy demand means low costs for inhabitants: energy you don’t use, you don’t have to pay for !