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Presentation for Barratt Homes North East
Alex HopeBSc GradEI CMI
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` Who am I?
` Code for Sustainable Homes
` PPS22 and the Merton Rule
` How to achieve CFSH Efficiency Criteria (Ene 1)
` How to achieve CFSH Renewables Criteria (Ene 7)
` Code level 6
` Questions
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` Environmental Assessment Method
` Prepared by Government in consultation with industry
and NGOs
` Closely linked to the Building Regulations
` Intended that the code will signal the future direction of
the building regulations in relation to energy use andCO2 emissions
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` Employed by Northumbria University in partnership with
North Tyneside Council
` Sustainable Energy Systems Officer working on the
Older Peoples Homes for the Future PFI project
ExpertiseExpertise
` Environmental Management and Energy Policy
` Decentralised Renewable Energy Systems
` Northumbria University Sustainable Cities Institute
` PhD Local renewable energy resource mapping
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To society
` Reduced greenhouse
gas emissions
` Better adaptation to
climate change
` Increase security ofenergy supply
` Reduce levels of fuelpoverty
To House Builders
` Improved comfort andsatisfaction forinhabitants
` Differentiate companyfrom competitors
` Excellent PR
` Increased quality control
` Regulatory certainty
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Managementealt &
Well eing
Energy & CO2
Water
Materials
Land Use &
Ecology Pollution
Surface Water
Run-off
Waste
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` Mandatory for all new social housing to be built to Codelevel 3
` Voluntary for private house builders
` Mandatory for privately built housing to have a coderating in the Home Information Pack
` Local authorities increasingly asking for codecompliance through planning agreements
` With tightening of building regulations some parts of thecode will essentially be mandatory for all housing
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` PPS22 - Local planning authorities may include policies in
local development documents that require a percentage of
the energy to be used in new residential, commercial or
industrial developments to come from on-site renewable
energy....
` London Borough of Merton first to formalise requirements
asking for 10% renewables
` Government expect all planning authorities to include policies
in their development plans that require a percentage of the
energy in new developments to come from on-site
renewables.
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` Back to basics!!
` Maximise passive solar gain
` Minimise energy loss using the buildings fabric
` Only THEN consider renewables
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Ene1 Dwelling Emission Rate - MANDATORY
Code Level 3 = 25% improvement of DER overTER (building regs)
Code Level 4 = 44% improvement of DER overTER (building regs)
Code Level 5 = 100% improvement of DER over
TER (building regs)
Code Level 6 = Zero Carbon
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` Maximises the use of naturalflows of heat, energy and light
` Orientation
` Day lighting
` Ventilation
` Thermal Mass construction
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` Minimises heat losses
` Excellent levels of airtightness
` High levels of insulation
` Minimal thermal bridges
` Mechanical ventilation
and heat recoverysystems
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` 270mm Insulation to loft
` Floor insulation
` Wall insulation
Structured Insulated
Panel System (SIPs)
` Masonry/Cavity wallconstruction???
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` Hanson QuickbuildWalling System
` Brick and blockcavity wall
` Factory fabricated
` U values of
0.15W/m2
` q50 value of5m3/(h/m2)
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` Control lighting for
presence of daylight
`
Control Heating,ventilation and shading
systems
` Smart metering
provides feedback tousers helping reduce
consumption
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Ene7 Low or Zero Carbon technologies OPTIONAL
` Ground Source Heat Pumps
` Air Source Heat Pumps
` Solar Thermal` Solar Photovoltaic's
` Micro Wind
` Biomass
` Micro Hydro
` Combined Heat and Power
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` Temperature below
ground is constant 10-
13
` Heat in the winter/cool in
the summer
` Installed as surface
collector or borehole
` Typically coupled with
under-floor heating
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` Highly efficient
` Low maintenance
` 50+ year lifetime
` Provide heating ANDcooling
` High capital cost
` Need suitable groundconditions
` Lack of suitableinstallers
` Need electricity topower heat pump
Advantages Disadvantages
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` Utilise energy fromoutdoor air
` Highly efficient
` Easily installed
` Provide heating ANDcooling
` Bulky equipment
` Noisy
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` Solar panels orcollectors - fitted toroof
` Panels collect heatfrom the sun'sradiation
`A heat transfer system
- uses the collectedheat to heat water
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Advantages
` Relatively low capital cost
`
Easy to install
` Long life span 40 years
` Provide up to 70% of
domestic hot water usage
Disadvantages
` Require southerly roof
aspect
` Only suitable for hot
water heating
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` Solar panels fitted toroof
` Convert sunlight intoelectricity
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Advantages
` Long lifetime
` Easy to install
` Can be grid connected or
stand alone
` Low maintenance
Disadvantages
` High capital cost
although decreasing at
average 4% per year
` Intermittent dont work
at night, or when cloud
cover is high
` Low efficiency levels
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Advantages
` Low capital cost
` Can be grid connected orstand alone
` Highly visible
Disadvantages
` Do not work well in urban
built up environments
` Require long location
specific surveys
` Highly visible
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` Utilises natural organic
materials
` Small scale domestic
systems use woodpellets, chips or logs
` Used at single
room/home/ communitylevel
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Advantages
` Easy to install
` Fuel readily available
` Proven technology
Disadvantages
` Still have to pay for fuel
` Can be high maintenance
` Best suited to community
applications
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` Generates heat and
electricity
`
Can be zero or lowcarbon
` Domestic and Community
scale
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Advantages
` Easy to install
` Provides heat ANDelectricity
` Simple to use
`
Can use biomass (ZeroCarbon) or natural gas
(low carbon)
Disadvantages
` Still have to pay for fuel
` Best suited to communityapplications
` Domestic CHP still
relatively new technology
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` Renewable technologies can be complementary
` Likely to require a mix of technologies for higher
code levels` E.G. Solar thermal and GSHP
` Solar PV and MicroWind
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` 100% Zero Carbon
` Includes energy consumption from appliances
(SAP 2009)
` Likely that community heat and/or power will be
best option
`
Possible option is ESCO/PrivateW
irearrangement
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