Transcript Sustainability and the road to *zero carbon* homes

Climate change
and
Housing
st
for the 21
Century
Stephen Palmer
Place : architecture
Climate Change
In 2007, the IPCC (Intergovernmental
Panel on Climate Change) reported
that global warming is "unequivocal"
and very likely (> 90%) to be caused
by human activities.
What if we don’t act now?
• increase in temperature of 2.5°C by 2100
• sea-levels will rise by 49 cm over the next 100 years
• global climate will continue to change
UK / EU Policy
• DIRECTIVE 2010/31/EU OF THE EUROPEAN
PARLIAMENT AND OF THE COUNCIL of 19
May 2010 on the energy performance of
buildings (EPBD)
all buildings to be nZEB by 2020
• Climate Change Act 2008 (CCA)
80% reduction in GHG emissions by 2050
UK Zero Carbon Policy
‘All new homes from 2016 to mitigate all on-site
carbon emissions as a result of regulated energy use’:
(and BREEAM / Code for Sustainable Homes)
Scrapped!
Where to now?
What standards and definitions to adopt?
Zero Carbon Standard
Regulation
Building Regulations 2013
Approved Document L1A & B
SAP 2009:
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CO2 target - TER
Fabric energy efficiency - TFEE
Heating & lighting
Control of overheating
Thermal bridging
Air testing – (5m3/(m2.h)@50Pa)
High efficiency systems (eg district heating, heat pumps)
ZCH options
nZEB
nearly Zero Energy Buildings
– how near to zero?
Definitions?:
• Primary energy / green house gas emissions?
• Energy demand v. renewable energy?
• Passive house principles
• New / refit standards?
Passivhaus?
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Ready for nZEB 2020
Health & wellbeing
Improved comfort and ventilation
Improved methodology PHPP
Controls the performance gap
(design, build, test)
• Reduce fuel poverty
Passivhaus principles
• Minimal fabric heat losses.
• Passive heat sources; sun, occupants,
appliances and heat from extract air.
• Remaining space heating provided only via
supply air.
Low energy design & planning
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Terraces and apartments
Compact, multi-storey
Orientation & glazing
Sustainable drainage
Renewable / community energy systems
Housing an ageing population
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Integrated, sustainable communities
New typologies for changing needs
Lifetime homes and neighbourhoods
Streets and places for people
Adapt / improve existing homes
City Centre / High Street regeneration?
Lords select committee
on built environment
Low energy
Re-fit
80% of 2050
housing already
built
• Energiesprong
• Enerphit
• EuroPHit
Type-specific solutions:
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Heritage assets
Medium/high rise
Town house
Suburban
City centre
• Making existing homes and
neighbourhoods work
• Creating integrated
communities
Technology and innovation
A sustainable future
for all
Abode, Great Kneighton
Proctor & Matthews / Countryside
Supported housing infill project
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Disused Methodist chapel
Post war suburban estate
Neighbourhood centre
New supported
apartments
• Communal / worship
space
High rise re-fit
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1970’s high rise
Resident engagement
Structural strengthening
Re-cladding, windows and
balconies
Gardens and play space
New common rooms
Internal refurbishment
Works in occupation