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Seai presentation sr

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DT117/4 Sustainable Build & Design - Class Presentations

DT117/4 Sustainable Build & Design - Class Presentations

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  • 1. Sinéad Reynolds
  • 2. Who they are?
    • National Energy Agency
    • Sustainability Act 2002
    • Sustainable Energy Authority of Ireland
    • Mission: To promote and assist the development of sustainable energy
    Sinéad Reynolds
  • 3. What they do?
    • Focus:
    • Energy Efficiency
    • Renewable Energy
    • Reduce Greenhouse Gasses from energy
    • Reduce Adverse Emissions (incl. GHG) from energy
    Sinéad Reynolds
  • 4. Sinéad Reynolds How it is done.
    • Built Environment:
      • EPBD/Home Energy Rating
      • SEBNet
    • Industry:
      • Large Industry Energy Network (LEIN)
      • Training/Support
    • Customer Service:
      • Customer Information
  • 5. 5 Step Approach to Energy Management for Business Sinéad Reynolds
  • 6. Energy Audits Objective
    • Type of energy is being used.
    • How much is being consumed.
    • Cost of Energy
    • Where the energy is being used.
    Sinéad Reynolds
  • 7. Energy Audits - Questions
    • How efficiently is the energy being used?
    • What are the potential savings?
    • How can they be achieved?
    • How much will it cost to achieve savings?
    • What are the priority areas?
    Sinéad Reynolds
  • 8. Performance Indicators
    • Comparison of performance against benchmarks
    • Expressed as kWh/m ²/year
    • Useful for identifying priority buildings
    • Useful for identifying priorities within buildings
    • (e.g. gas, electricity & water)
    Sinéad Reynolds
  • 9. Benchmarks kWh/m ²/year Sinéad Reynolds
  • 10. Areas for Savings
    • Design of buildings and services
    • Specification of energy using equipment
    • Management and use of equipment
    Sinéad Reynolds
  • 11. Heating & Ventilation Saving Areas
    • Boiler Efficiency – combustion efficiency test
    • Distribution System
    • Controls
    • Hot Water
    • Fabric Improvements
    • Heat Recovery
    Sinéad Reynolds
  • 12. Electrical Saving Areas
    • Lighting:
      • Lamp Type, fitting, control and use of daylight
    • Fans & Pumps:
      • Control, Extract Fans and Maintenance
    • Refrigeration:
      • Temperature, Sealing
    Sinéad Reynolds
  • 13. Energy Awareness Events
    • Raise awareness among staff
    • Staff are more willing to help if their input is wanted and appreciated
    • Allow staff to make a difference
    • Recognise and reward success
    • Keep staff informed of any developments arising from their input
    • Climate change affects us all!
    Sinéad Reynolds
  • 14. Energy for the home
    • Servicing Boiler:
      • Save up to €150 per year
      • Servicing oil or gas boiler improves overall efficiency by 10%
    • Servicing Boiler Benefits:
      • Saves money - reducing heating costs
      • Reduces CO2 emissions - benefiting the environment
      • Gives peace of mind - improving boiler's reliability and safety
    Sinéad Reynolds
  • 15. Natural Lighting in the Home
    • Rooms should be furnished to allow daylight in.
    • Furniture and other obstacles should not obstruct daylight penetration of the room.
    • Paint surfaces of rooms, including ceilings, should be colours of high reflectance to maximise the day lighting opportunities
    • (also the effectiveness of artificial light).
      • Light colours reflect up to 80% of incident light while deep / dark colours might reflect less than 10% of incident light.
    • Dirt on vertical windows reduce performance by 10% and even more if the dirt is allowed to build up on roof-lights.
    Sinéad Reynolds
  • 16. Artificial Lighting in the Home
    • Artificial lighting should remain off as long as there is sufficient daylight.
    • Lighting should be as efficient as possible to meet the household requirements.
    Sinéad Reynolds
  • 17. Insulating the Home
    • Insulating attic can save up to 20% on heating bill.
    • Wall insulation can be increased in a number of ways.
    • (i) insulated dry lining,
    • (ii) blown mineral or cellulose fibre or polystyrene beads into the cavity, or
    • (iii) rigid external insulation with render or brick finish.
    • Double glazed units when replacing windows.
    • Much of the heat loss from a house occurs through the windows particularly if they are single glazed.
    • A cylinder with factory applied insulation should be considered.
    • A lagging jacket on hot water cylinder will keep water hotter for longer and pay for itself in 2-3 months
    • Closed curtains at night should not hang over the radiators.
    • A reflective foil, backed by insulation if space permits should be fixed behind radiators mounted on external walls
    Sinéad Reynolds
  • 18. Conclusion
    • Effective Energy Management does bring real benefits through
      • Reduced Costs
      • Reduced environmental footprint
    Sinéad Reynolds