going green 2011 slides_cundall

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SustainabilityNew Rules for 2011

15-20 St Pauls SquareBirmingham

B3 1RB

0121 262 2720



Who am I?

Robert van Zyl

Cadbury HQ, Bournville



Contents: New Sustainability Rules

1. New rules for Energy use:

CO2 Emissions limits Calculation methodology

Day-lighting

Fan power, and riser sizes

Miscellaneous: Air-conditioning

inspections

2. Interlude: examples

3. New rules for facades:

Air permeability

Thermal bridging

Effect on dwellings

Glazing and Overheating

4. New rules for Renewable energy

Carbon emissions factors Feed-in tariffs

Renewable Heat Incentive

5. New Rules for Refurbishments

Consequential Improvements

6. New Rules for BREEAM

8. Route to zero carbon



Part L

Revision

Timeline for UK Legislation Overview

2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Energy

Act

ClimateChange

Act

Planning

Act

Part L

Revision

Part L

RevisionPart L

Revision

Renewable

Heat Incentive

CRC

BREEAM 2011

New homes to

be carbon

zero

Feed-In

Tariff

New public

buildings to

be carbon

zero

All new buildings

to be carbon zero






Day-lighting



inspections



Air permeability

Thermal bridging

Effect on dwellings








The Future




Reduced limits on Carbon Emissions

25%



Reduced limits on Carbon Emissions






Day-lighting



inspections



Air permeability

Thermal bridging

Effect on dwellings








The Future




Calculation Method Part L CO2 Target

Does all compliant software give the same results?If not what would be acceptable difference?

-25%

-20%

-15%-10%

-5%

0%

5%

10%

15%

20%

TAS IES IES - sBEM sBEM

4.5% 4.5%

17.8%

-23.3%

Pass

Part L 2010

Fail

Part L 2010



Calculation Method 10% Renewables

What about Total Carbon (Including small power and process loads)?

0

5

10

15

20

25

30

35

TAS IES IES - sBEM sBEM

27

23

3235






Lighting



inspections



Air permeability

Thermal bridging

Effect on dwellings








The Future




Task Lighting still not considered

Cadburys, Birmingham

BCO 2009 Regional Awards Winner

BSJ 2007 Sustainability Award Winner



Lighting Case Study

Double T5 LampSingle T5 Lamp

30% loss of light

Scattering of light

92% light transmission

Refraction of light






Lighting



inspections



Air permeability

Thermal bridging

Effect on dwellings








The Future

8. Recap: How to do it

Steps to low carbon



Shortlisted for Brick 2008 Awards

Standton Williams / Morey Smith Architects

Winner of BCO Regional Awards 2009Winner of Brick 2008 Awards



Natural Ventilation Case Study: BIC



Shading

Building overhangsground floor

First floor external

shading

Timber slats to atria

space



Natural Ventilation

No cooling Type

Cross vent on ground

Single sided on first

Secure night purge

Ground floor (louvres)

First floor (high level

windows)



Typical internal space

External shading High level automated

openings

Openable Windows

Roller blinds on guidewires

Insulated spandrels

Perimeter lights off due to

daylight



Central hub



Butterfield Innovation Centre, Luton






Lighting


Air-conditioning inspections



Air permeability

Thermal bridging

Effect on dwellings








The Future


Steps to low carbon



Air Conditioning Inspections

Air Conditioning Inspections (required by EPBD)

250kW or greater January 2009 deadline

12kW or greater January 2011 deadline 5 Year intervals between inspections

Improvement report provided to tenant / land lord






Lighting





Air permeability

Thermal bridging

- Effect on dwellings








The Future




Dwellings - Thermal Bridging



12%

4% 3%

-6%

1%

-8%-10%

-19%

-6%

-17%-20%

-29%

South

East/West

North

Dwellings - Carbon compliance

Whole house

mech vent + HR

Natural

Ventilation

Option 1 Electric Panel heaterswith mechanical ventilation

- Reduce air permeability

from 5 to <3.5- Reduce roof U-Value

from 0.18 to 0.16

- - value

from 0.08 to 0.04

... Close to PassivHaus®

standard

Mid-Floor

Pass or fail

Part L 2010 is

to do with area

weighted

results

Top Floor



12%

4% 3%

-6%

1%

-8%-10%

-19%

-6%

-17%-20%

-29%-30%

-25%

-20%

-15%

-10%

-5%

0%

5%

10%

15%

South

East/West

North


Natural

Ventilation

Top Floor Mid-Floor

Option 2 Electric Panel heaters with natural ventilation

- Must add Renewable Energy

(e.g. Solar hot water)

South

East/West

North



15% 15%

12%

11%

8%8%

4%3%

4%

2%

-1% -2%


Whole house

mech vent + HR

Natural

Ventilation

Option 3 Air Source Heat Pumps (split units)

With Natural Ventilation

- Must improve insulation

and air permeability for top floor, north facing

rooms

South

East/West

North Top Floor Mid-Floor Top Floor Mid-Floor



4% 3%

9%7%

-2%

-4%

0%

-2%

-7%

-10%

-6%-8%


Option 4: Gas condensing boiler

Natural

Ventilation

Top Floor Mid-Floor

To pass with Natural ventilation:

- Improve Air Permeability- Improve U-Values

(walls, window and roof)

-

- And improve boiler controls






Lighting





Air permeability

Thermal bridging









The Future


Steps to low carbon



U-values 1.8 - glazing

Limiting overheating in

summer

glass area

g-value

shading blinds

Solar gain through any facade

must be less thanSolar gain (kWh) through 1m high

strip window (g=0.68) on east

facade during 4 months in summer

in your location

EastFacade

1m high strip window

(g=0.68)




Case Study: Vodafone HQ

Vodafone HQ



Balance overheating & daylight

Increased glass

height=

higher

performance

glass (OR

external shading)=

lower visible light

transmission!

1.3m 1.6m 2.5m

1m highwindows

(g=0.68)

=

not enough

daylight!



Case Study: Triple Glazing

Wellcome Trust, London



Facade solution

Double glazing External Blind

Outer Glass

Ventilated cavity

Open in summer

Closed in winter

Facade prototype



Facade analysis - lots



Wellcome Trust, London






Lighting





Air permeability

Thermal bridging




Carbon emission factors Feed-in tariffs





The Future


Steps to low carbon



Feed-in- April 2010)

2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Energy

Act

Climate

Change

Act

Planning

Act

Feed-InTariff Government are reviewing

upper limit and are consideringrestricting to 50kW max




Renewable Heat Incentive Commence 1st April 2011

20th October 2010 spending review still on

May apply to systems installed in 2010

Biggest rewards for property not on natural gas

grid

Payment for each kWh heat generated (p/kWh)

installations



Renewable Heat Incentive (draft)

Technology Scale Tariff

(p/kWh)

Tariff Lifetime

(years)

Small installations

Solid biomass Up to 45kW 9 15

Biodiesel Up to 45kW 6.5 15

Biogas on-site combustion Up to 45kW 5.5 10

Ground source heat pumps Up to 45kW 7 23

Air source heat pumps Up to 45kW 7.5 18

Solar thermal Up to 20kW 18 20

Medium installations

Solid biomass 45kW-500kW 6.5 15

Biogas on-soite combustion 45kW-200kW 5.5 10

Ground source heat pumps 45kW-350kW 5.5 20

Air source heat pumps 45kW-350kW 2 20

Solar thermal 20kW-100kW 17 20

Large installations

Solid biomass 500kW and above 1.6 -2.5 15

Ground source heat pumps 350kW and above 1.5 20

Biomethane injection All scales 4 15



Renewables

Rules

- Understand the requirement (Is it Part L compliance, planningor EPC (BREEAM) or zero carbon...)

- Choose right software to meet requirement

- Understand building energy profile

- Carry out steps to low carbon

-

Heat pumps GSHP & ATES CHP Tri-gen Biomass CHP Biodiesel CHP






Lighting





Air permeability

Thermal bridging









The Future


Steps to low carbon




No Change

Applies when existing building TUFA is

>1,000m2 and scope of works consists of

/ includes:

An extension

Initial provision of M&E services Increase capacity of M&E

If list on right is >10% of the construction

cost, then ok

Not required if >15 year payback If heating is increased, then fabric must

be improved too






Lighting





Air permeability

Thermal bridging









The Future


Steps to low carbon



BREEAM 2011

New Street Square

BSJ Sustainable Building Award Winner 2008

What are BREEAM changes?

Introduction to new rules

received 7th February 2011

BREEAM 2011 will be launched

Spring / Summer

Consolidation of credits and

manual

BREEAM 2011 only applies to

New Buildings

Refurbishment can use 2008

rules or 2011

Fit-out must use 2008 rules

BREEAM In-Use required for



BREEAM 2011

What are the new BREEAM credits:INNOVATION

10 max credits

MANAGEMENT

Man 1 Sustainable procurement (8)

Man 2 Responsible construction practices (2)

Man 3 Construction site impacts (5)

Man 4 Stakeholder participation (4)

Man 5 Service life planning and costing (3)HEALTH AND WELLBEING

Hea 1 Visual comfort (3-5)

Hea 2 Indoor air quality (6)

Hea 3 Thermal comfort (2)

Hea 4 Water quality (1)

Hea 5 Acoustic performance (2-4)

Hea 6 Safety and security (2)

ENERGY

Ene 1 Reduction of CO 2 Emissions (15)

Ene 2 Energy Monitoring (1-2)

Ene 3 Low or zero carbon technologies (5)

Ene 4 Energy efficient external lighting (1)

Ene 5 Energy efficient cold storage systems (0-3)

Ene 6 Energy efficient transportation systems (0-2)

Ene 7 Energy efficient laboratory systems (0-5)Ene 8 Energy efficient equipment (process) (0-2)

Ene 9 Drying space (building type specific) (0-1)

TRANSPORT

Tra 1 Public transport accessibility (2-6)

Tra 2 Proximity to amenities (0-1)

Tra 3 Cyclists facilities (1-2)

Tra 4 Maximum car parking capacity (0-2)

Tra 5 Travel plan (1)

WATERWat 1 Water Consumption (5)

Wat 2 Water Monitoring (1)

Wat 3 Water leak detection and prevention (2)

Wat 4 Water efficient equipments (process) (2)

MATERIALS

Mat 1 Life cycle impacts (2-6)

Mat 2 Hard landscaping and boundary protection (1)

Mat 3 Responsible sourcing of materials (3)

Mat 4 Insulation (2)

Mat 5 Designing for robustness (1)

WASTE

Wst 1 Construction waste management (4)Wst 2 Recycled aggregates (1)

Wst 3 Operational waste (1)

Wst 4 Speculative floor and ceiling finishes (0-1)

LAND USE AND ECOLOGY

LE 1 Site selection (2)

LE 2 Ecological value of site and

Protection of ecological features (1)

LE 3 Mitigating ecological impact (2)

LE 4 Enhancing site ecology (2-3)LE 5 Long term impact on biodiversity (2)

POLLUTION

Pol 1 Refrigerants (3)

Pol 2 NOx emissions from heating source (2-3)

Pol 3 Surface water run-off (5)

Pol 4 Reduction of night time light pollution (1)

Pol 5 Noise attenuation (1)

Man 1 Commissioning

Thermographic survey

BREEAM AP

Building user guide

Maintenance






Lighting





Air permeability

Thermal bridging









The Future


Steps to low carbon

f b h k ?



EPC v DEC for benchmarking?

Modelled Building loads only Actual Building and Process loads

H 176-200

I 201-225

J 226-250

K 251-275 269

C f



Display Energy Certificates

0 2000 4000 6000 8000 10000 12000

A

B

C

D

E

F

G

X

DEC Ratings - 2010

E P f C tifi t



Energy Performance Certificates

EPBD2 rules must be

implemented 2012-2013

EPBD2 will require more details

recommendations

EPBD2 requires EPC to be

displayed in buildings >500m2

that are frequently visited by thepublic

C t t N S t i bilit R l






Lighting





Air permeability

Thermal bridging









The Future

8. The future: Zero Carbon

Z C b H 2016



Zero Carbon Homes - 2016

Zero Carbon

70% of zero carbon target:

Energy Efficiency

On-site systems Allowable Solutions

Th k



Thank you

going green 2011 slides_cundall

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