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[16469] Low Energy Building Design

[16469] Low Energy Building Design. critique 1. Adam Boney , Fraser Cassels , Marc Breslin and Nick Burns. Location. Case studies. Considered a number of similar projects Focused on layout, technologies and locations Found there is no set, prescribed approach. Case studies.

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[16469] Low Energy Building Design

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  1. [16469] Low Energy Building Design critique 1 Adam Boney, Fraser Cassels, Marc Breslin and Nick Burns

  2. Location

  3. Case studies • Considered a number of similar projects • Focused on layout, technologies and locations • Found there is no set, prescribed approach

  4. Case studies • Kingspan Lighthouse, Watford • Zero carbon house – ‘Light on the world’s resources’ • 40° mono-pitch roof accommodating solar PV panels • Passive ventilation and cooling with wind catcher • Grey water recycling • Low energy LED lighting

  5. Case studies • Passivhaus project, Galway • Timber frame construction, 235m2 • Balanced ventilation system with heat recovery • Large amounts of rock wool insulation • Water-saving WCs

  6. Case studies • Batavia, Unst • Zero carbon, detached house • Timber frame construction • 2 micro wind turbines • Air-to-water heat pump • Strong links with local, national and international organisations

  7. Climate • Consistent levels of strong wind all year round • Variable sunshine levels – low amount in winter, higher in the summer Source: http://www.shetland.gov.uk/documents/SinStatsBinder1.pdf

  8. Energy usage Average four bedroom house consumes approx. 29,000kWh of gas and 6,000kWh of electricity Energy use: Heating: 61% Hot water: 23% Lighting/electrical: 13% Cooking: 3%

  9. Technology • Wind technologies: • Cost: £ 500-£1,200 • Size: Range from a few watts to a few hundred watts. • Output: 700kWh-2,500kWh depending upon wind speed. • Payback period: 4-5years. Small micro wind turbine

  10. Technology • Cost: £4,000 -£10,000 • Size: Few hundred watts to a few hundred kilowatts. • Output: 50,000kWh-800,000kWh depending on wind speed. • Payback period: 5-6years. Stand-alone wind turbine

  11. Technology From our climate investigation it is apparent that the average wind speed for the location is in the region of 7 m/s. Average site wind speed in m/s Yearly output in kWh for turbines rated at: Our site will install a 2.5kW wind turbine to satisfy the electrical needs of the building

  12. Technology • From electricity generated via wind power: • Ground-source heat pump • HVAC • Direct heating system

  13. Additional Technology • PV cells • Rainwater harvesting • Clean source • Effective in summer • Low maintenance • Generation 180KWh per square metre • Collected water can be used for: • Drainage • Washing (post antibacterial treatment) • Drinking (post mineralization)

  14. Possible Technologies • Sprung floor

  15. Possible layouts • Based on initial thoughts and findings… • Materials • Orientation • Size

  16. Possible layouts

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