Chelmsford Cathedral case studyCathedrals and Climate Change 2nd November 2009

Daniel Kenning CEng CEnvPrincipal Environmental ConsultantHarrison Group Environmental

Harrison Group Environmental Energy services

energy efficiency and renewables Thermal modelling SAP, EPC Travel planning

Ecology services Habitat surveys Bats Habitat creation and enhancement Work with local wildlife trusts

Geotechnology, site investigation

Driver 1 – Carbon Dioxide CO2

UNITED STATES

JAPAN

GERMANY

UK

CANADA

ITALY

FRANCE

AUSTRALIA

SPAINTURKEY

NETHERLANDS

BELGIUM

GREECEAUSTRIA

FINLANDNORWAY

DENM ARK SWEDEN

SWIT ZERLAND

PORTUG AL

IRELAND

NEW ZEALANDLUXEM BOU RGICEL AND

RUSSIAN FED.

UKRAINE

POLAND

CZECH REP.

ROM ANIA

BEL ARU S

BULG ARIA

HUNGARYSLO VAKIALITHUANIA

EST ONIA LATVIA

CHINA

INDIA

KAZAKHSTAN

MEXICO

SOUTH AFRICA

KOREA D.P.REP.

INDONESIA

BRAZIL

IRAN

SAUDI ARABIA

TAIWAN

VENEZUELA

ARGENTINA

NIGERIA

ALGERIAEGYPT

PAKISTAN

YUGO SLAVIA

COLO MBIA

MALAYSIA

T URKM ENISTANPHILIPP INES

SINGAPORE

IRAQ

ISRAELSYRIA

CHI LECUBA LIBYACRO ATIAHONG KONGM OLDOVA

MO ROCCOVIET NAM

T AJIK IST ANPERU

MACEDONIASLOVENIA G EORGIA

ECUADO RTRIN. & TOBAGO

BANGL ADESH

ZIM BABWEQATARTUNIS IA O MAN

KYRG YZST AN

KENYA

M YANM AR

ZAIRE

SRI LANKA

GHANA

SUDAN

ETHIOPIA

AFGHANIST AN

TAN ZANIA

MO ZAMBIQ UEUGANDA

NEPAL

M ALAW I

MALI

GT

1GT

2GT

3GT

4GT

5GT

6GT

7GT

8GT

9GT

10GT

1860 1870 1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 2020 2030 2040 2050 2060 2070 2080 2090 2100

giga

tonn

es c

arbo

n fr

om fo

ssil

fuel

bur

ning

-0.8

-0.7

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

Degr

eeCe

lsiu

s

450 ppmv360 ppmv280 ppmv atmospheric concentrations of CO2 in parts per millions by volume (ppmv)

Temperature witb 20 Year Average

Driver 2 – Energy Insecurity

Deman

d

Supply

2009Supply Demand

Phased review at Chelmsford 4 phases:

Chapter House Cathedral and

Churchyard Cathedral Centre Residences

7 properties On-site and off-site

Review Process Review of bills Site survey

Energy Water Waste Transport

Survey findings

Review Process - Analysis Total electricity used 2005-2006

43,593 kWh/yr Measured floor area

Approx. 500 m2

Baseline demand and CO2 emissions 87 kWh/m2/yr, 36.7 kgCO2/m2/yr

Comparison with industry benchmarks Community centres 147 kWh/m2/yr Further education classrooms 181 kWh/m2/yr Social clubs 200 kWh/m2/yr

Step-by-step forecast for proposed measures

Review Process - Recommendations Low cost Investment Strategic long term

Low cost measures Simple monitoring and control strategy Energy-efficient and water-efficient equipment in

new kitchen Design-in facilities for recycling Complete change to energy efficient lighting Travel plan for staff and visitors Energy awareness programme Hypothecation of savings for investments

Example - Monitoring and Targeting Data collection

Electricity Water Waste Travel

Data analysis Reporting Action

Investment measures Central heating with radiators and gas boiler

Effective controls Effective insulation Hot water storage compatible with future solar system Designed to allow flexibility in future type of boiler

Regenerative braking for lift Internal insulation on walls Replacement water efficient appliances in toilets

Example – Internal Insulation100 mm glass fibre

40 mmpolystyrene

Cold Bridge

Strategic long term measures Electricity from zero carbon source Solar thermal system for hot water in summer

Possible CO2 emissions reduction

Years from start of programme

% o

f CO 2

em

issio

ns v

ersu

s bas

elin

e Monitoring and control 5%

Low cost measures 10%

Change from storage heaters to gas boiler with radiators

43%

Change to renewable electricity supply

37%

Change from gas to biomass

87%

Target for UK

Next steps Modelling of the benefits of:

New insulation New heating system

Cost analysis Implementation Monitoring

Next three phases of the programme

Modelling and Energy Profile

Summary Carbon and Security

Energy, water, waste, transport A strategic approach makes it feasible

We would be pleased to help you too. Daniel Kenning daniel@harrisongroupuk.com 020 7537 9233