sustainable refurbishment, retrofit, energy management in housing
DESCRIPTION
Sustainable Refurbishment, Retrofit, Energy Management in Housing. Rain Kimmel Skirmante Stankeviciute Natasa Ilic Lucie Riffort. Threats to Asian elephants. Habitat loss and fragmentation Illegal hunting and trade Capture of wild elephants Genetic threat Disease. - PowerPoint PPT PresentationTRANSCRIPT
SUSTAINABLE REFURBISHMENT, RETROFIT, ENERGY MANAGEMENT IN HOUSING
Rain KimmelSkirmante StankeviciuteNatasa IlicLucie Riffort
THREATS TO ASIAN ELEPHANTS• Habitat loss and
fragmentation• Illegal hunting and trade• Capture of wild
elephants• Genetic threat• Disease
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SUSTAINABLE REFURBISHMENT ZIRMUNU G. 116
Energy efficiency task Façade/gable/roof/balconies insulation Thermal bridge solutions U value calculation & heat loss frame Cost calculations
Heating task Existing heating system and main problems Solutions for heating source and type Cost
Green roof Inverted Roof Extensive green roof Intensive green roof
Building services
Sustainabl
Sustainable Refurbishment, Retrofit Energy Management in Housing
EXISTING BUILDING
• Existing energy efficiency class < D
• Energy consumption• No ventilation• Indoor climate does not
meet the requirements• Old heating system
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ENERGY EFFICIENCY
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Façade/gable/roof/balconies insulation
Thermal bridge solutions U value calculation & heat loss
frame Cost calculations
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Current situation
ENERGY EFFICIENCY
Annual heating energy demand 241,8KWh/m²*year
Thermal conductivities (U-values)Wall 2,8 W/m²*KRoof 0,65 W/m²*KWindows 3,0 W/m²*K
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Thermal bridges
External wall
External wall/ ceilingWindow/
External wall
ENERGY EFFICIENCY
Sustainable Refurbishment, Retrofit Energy Management in Housing
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Renovation recommendation
ENERGY EFFICIENCY
U-value 0,125 W/m²*K
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Thermal bridges
Balconies closed with windows
ENERGY EFFICIENCY
Sustainable Refurbishment, Retrofit Energy Management in Housing
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ENERGY EFFICIENCY
Roof 400mm of rockwoolSBS Drainage layerSoil 100mm
Windows U=0,77 W/m²K
Basement 100mm
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ENERGY EFFICIENCY
Current heating energy demand 241,8KWh/m²*year
After renovation 25,49KWh/m²*year
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Profitability
ENERGY EFFICIENCY
Considering loan interests and rise of energy prices
Retrofitting pays off in 13 years Also better indoor climate Less CO2 emissions from heating
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HEATING SYSTEM
Existing heating system and main problems
Solutions for heating source and type Solar wall Geothermal heating Radiators renewal
Cost
Sustainable Refurbishment, Retrofit Energy Management in Housing
• Old• Rapidly increasing prices • CO2 emission • Temperature depends on local governance • Inefficiency• Low comfort level
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PROBLEMS
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Solutions for heating source and type
Heating sources• Burning other renewable energy source• Solar energy • Wind turbines • Geothermal heat pumps • Combine heating
Heating types• Floor heating• Radiators renewal
ENERGY EFFICIENCY
Sustainable Refurbishment, Retrofit Energy Management in Housing
SOLAR WALL• Less cost then solar
panels/collectors• Use passive solar
energy• Can be use as facade
and insulation material• Works as ventilation
and heating system at the same time
• Needed 156 m2 of Solar Wall
• 1 m2 wall reduces normal heating cost about 131 Lt per year
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GEOTHERMAL HEATING
• Energy clean, sustainable and free• Use heat from ground (not geothermal water)• Need electricity to pump the heat• Heat pump 40 kW• Drills about 140 m• Will be used for building heating
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RADIATORS RENEWAL• Keep and use old radiators• Cost 1/5 full radiators renewal• Thermostatic head installed on old radiators• Energy demand - 10% less• More comfort
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Cost
Cost Saves per year
Solar Wall 51 792 Lt 20 500 Lt
Geothermal pumps 84 000 Lt 28 000 Lt
Radiators ----- -----
ENERGY EFFICIENCY
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Thermal insulation laid over the waterproofing layer
If the structure incorporates a concrete slab it will normally be cost-effective to design the slab to support the load of 80 - 120 kg/m2 imposed by a ballasted inverted roof system
ROOF ANALYSIS
Sustainable Refurbishment, Retrofit Energy Management in Housing
Inverted roof
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Planting media – minimum 30 cm deep
Weights ranging from 120 to 200 kilograms per square meter
Almost always used for new construction
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ROOF ANALYSIS
Sustainable Refurbishment, Retrofit Energy Management in Housing
Intensive green roof
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Saturated weight of 8 to 40 kilograms per square meter
Planting media of 3 to 12 cm thick
Most extensive green roofs are not designed for public access
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ROOF ANALYSIS
Sustainable Refurbishment, Retrofit Energy Management in Housing
Extensive green roof
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ROOF ANALISIS
Construction of green roof
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ROOF ANALISIS
Green roof benefits Insulation – energy cost reduction Building acoustics Storm water retention Lasts longer & lower maintenance
costs Open space Habitat
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Sustainable Refurbishment, Retrofit, Energy Management in Housing
Mechanical ventilation with heat recovery system
Too much ventilation discomfort
Excessive energy use
Too little ventilation moisture
Condensation and mould growth
MVHR ventilation control
VENTILATION
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Sustainable Refurbishment, Retrofit, Energy Management in Housing
Principle
VENTILATION
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Sustainable Refurbishment, Retrofit, Energy Management in Housing
Solarwall air heating
VENTILATION
Sun’s energy to pre-heat ventilation air
1761 sun hours / year
30+ years lifespan
No maintenance
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Sustainable Refurbishment, Retrofit, Energy Management in Housing
SOLARWALL AIR HEATING: WORKING
VENTILATION
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CONCLUSION
The majority of our existing stock requires some level of retrofit to enable us to live and work more sustainably. In this project we
suggest reachable ways to make our homes more sustainable.
Sustainable Refurbishment, Retrofit Energy Management in Housing
Thank You for Your Attention