EPSRC – 8th February

Energy Use and the Built Environment

Phil Jones

Welsh School of Architecture, Cardiff University

The Welsh School of ArchitectureArchitectural Science Group one of the longest established building energy research groups.

Centre for Research in the Built Environment – CRiBE.

Centre for Research in the Built Environment, co-founder of WERC.

BRE Centre for Sustainable Design.

Institute Built Environment, British University of Dubai BUiD – Atkins Research Chair.

Design Research

Computer Models

Energy Model: HTB2

Dynamic finite difference

Recent development:

Facades

Chilled surface coolingfa

bric

tem

pera

ture

°C

3:00

10:00

12:00

14:00

17:00

20:00

outside inside

Depth through FabricTime

Computer Models

Ecotect

Lighting and solar, energy, acoustic.

Links with energy / airflow models:

HTB2, Energy+, SBEM, WinAir

Computer Models

WinAir

CFD airflow model° C

2 0 . 0 0 +

1 9 .9 0 -2 0 . 0 0

1 9 .8 0 -1 9 . 9 0

1 9 .7 0 -1 9 . 8 0

1 9 .6 0 -1 9 . 7 0

1 9 .5 0 -1 9 . 6 0

1 9 .4 0 -1 9 . 5 0

1 9 .3 0 -1 9 . 4 0

1 9 .2 0 -1 9 . 3 0

1 9 .1 0 -1 9 . 2 0

CFD Output AnalysisCe ll T e m p e ra tureConto ur Ra n ge : 19.00 - 20.00 °CIn S te ps of: 0.10 °C© A.J .Ma rs h '00

Computer Models

Energy and Environmental Prediction - EEP

EEPEnergy andEnvironmentalPrediction Model

Planning tool for local authorities

•Buildings energy use

•Transport

•Pollution

•Health

NEATH PORT TALBOT COUNTY BOROUGH COUNCIL

ENERGY - Operation of existing stock•Organisations, such as municipalities and local authorities need management tools.

0% 10% 20% 30% 40% 50% 60% 70%

0

15

30

45

60

75

90

105

120

A100 to 120

B85 to 99

C70 to 84

D55 to 69

E40 to 54

F25 to 39

G0 to 24

Percentage of homes having SAP ratings in the indicated ranges

MoreEnergyefficient

SAP ratings

Less energy efficient

Private

Council

Impact of the built environment on health

•accidents in the home

•mould growth

•mental health

Computer Models: Decision Support System

Practical Evaluation Tools for

Urban Sustainability - PETUS Urban Infrastructure

•Energy

•Waste

•Water/sewage

•Transport

•Green/blue structures

•Buildings and land use

HK-BEAMThe Hong Kong Building Environmental Assessment

Method

Comprehensive and voluntary scheme to assess, improve and label the environmental performance of buildings in Hong Kong

Sky Dome

Wind tunnel

Scale Modelling

Partners: Gwalia, PCKO, CRiBE Design Research Unit. Façade engineering for offices in Zurich

Eco-factory Baglan Energy Park

Design Research Unit - Design of new buildingsTo achieve near zero carbon performance.Innovation in construction and the use of materials.Alternative and renewable sources of energy.

EMPA Zero Carbon Office

15

17

19

21

23

25

27

29

15 20 25 30 35 40

external temperature C

tem

per

atu

re a

fter

gro

un

d

coo

lin

g C

High-rise Residential in Hong Kong

WIND TUNNEL MODELLINGPredict pressure coefficients and pedestrian wind flow

Example high-rise residential buildings

-0.4

-0.3

-0.3

-0.4 -0.4

-0.4

-0.4

-0.2

-0.2

-0.3

-0.4

-0.4

-0.2

-0.3

-0.3+0.0

+0.6

+0.7

+0.6+0.7

+0.7

+0.8+0.8

+0.8+0.8

+0.8

+0.8

+0.8

+0.8

+0.7

+0.5

-0.8

-0.6

-0.6

-0.6

-0.6

-0.6

-0.6

-0.6

-0.6-0.6

-0.5

-0.6-0.6

-0.6

-0.6-0.6

-0.6

-0.5

-0.4

-0.4

-0.4

-0.4-0.4

-0.4 -0.4

-0.4

-0.4

-0.4

-0.4

-0.4

-0.4

-0.5

Concept High Rise

RESIDENTIAL HIGH-RISE TIANJIN (Leverhulme)

遮阳与低传热系数窗体 （ Shading system and low U-value window ）

结合遮阳与低传热系数的窗户材质，采暖能耗保持同一水平，制冷能耗减少 25%

Average energy cost, after HTB2

Xi’an Strategy for Sustainable Housing(EU Asian Link)

The Pearl, Qatar 50% energy reductions, Ecotect and Energy+

COST C23 L-CUBELow Carbon Urban Built Environment

15 EU Countries

KEF Construction Knowledge Wales

Construction Training for a Sustainable Wales

Dissemination

Micro generation