seai presentation sr
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DT117/4 Sustainable Build & Design - Class PresentationsTRANSCRIPT
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Sinéad Reynolds
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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
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What they do?
Focus: • Energy Efficiency
• Renewable Energy
• Reduce Greenhouse Gasses from energy
• Reduce Adverse Emissions (incl. GHG) from energy
Sinéad Reynolds
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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
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5 Step Approach to Energy Management for Business
Sinéad Reynolds
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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
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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
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Performance Indicators
• Comparison of performance against benchmarks
• Expressed as kWh/m²/year
• Useful for identifying priority buildings
• Useful for identifying priorities within buildings
(e.g. gas, electricity & water)
Sinéad Reynolds
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Benchmarks kWh/m²/year
Sinéad Reynolds
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Areas for Savings
• Design of buildings and services
• Specification of energy using equipment
• Management and use of equipment
Sinéad Reynolds
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Heating & Ventilation Saving Areas
• Boiler Efficiency – combustion efficiency test
• Distribution System
• Controls
• Hot Water
• Fabric Improvements
• Heat Recovery
Sinéad Reynolds
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Electrical Saving Areas
• Lighting:– Lamp Type, fitting, control and use of daylight
• Fans & Pumps:– Control, Extract Fans and Maintenance
• Refrigeration:– Temperature, Sealing
Sinéad Reynolds
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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
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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 safetySinéad Reynolds
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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
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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
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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
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Conclusion
Effective Energy Management does bring real benefits through
– Reduced Costs
– Reduced environmental footprint
Sinéad Reynolds