ENERGY ANALYSIS USING COMPUTER AIDED DESIGN

ERIC BRENNANX00076210

WHAT IS ENERGY ANALYSIS?

A measure of energy performance

Suggestions for possible improvement

Projections of cost and savings

BIM TECHNOLOGY

More precise predictions of building performance,

Boosted energy efficiency Thermal Analysis Carbon Footprint Cost savings Code and standards compliances Increased certainty

MODEL 4 Bedroom Council

House in GSDA

9,008 units like this in

SDCC Portfolio

Residential sector in 2008 accounted for 34% of primary energy demand in thermal energy.

OBJECTIVES

Compare BIM model produced Data with Manual data

Make an Environmental Evaluation

Investigate Possible Improvements

Analyze cost difference

MANUAL CALCULATIONS

Exterior Walls HLR – 0.0272W/m^2K Roof HLR – 0.168W/m^2K Windows – 0.33W/m^2K Annual Fuel Cost (NG) – €508.208

/7,713kWh Annual Electricity Cost - €1197.31

/5508kWh C02 Output from NG- 1,588.87kg of C02

Jan-Feb2011 Mar-Aprl2011 May-Jun2011 Jul-Aug2011 Sept-Oct2011 Nov-Dec20110

500

1000

1500

2000

2500

3000

0

100

200

300

400

500

600

700

Gas Consumption & Heatin Degree Days Versus Time

Gas Consump-tion (kWh)

Heating Degree Days

Time (Months)

Gas

Co

nsu

mp

tio

n (

kWh

)

Hea

tin

g D

egre

e D

ays

(Day

s)

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual

2012 6.0 6.6 8.5 6.6 10.2 12.3             8.0

2011 3.6 7.0 6.3 10.9 11.4 12.4 14.1 13.6 14.0 11.7 9.9 5.7 10.1

mean 4.6 4.6 5.9 7.4 10.1 13.1 14.9 14.5 12.6 10.2 6.5 5.4 9.2

Mean temperature in degrees Celsius for Casement Aerodrome

BIM MODEL RESULTS

Trouble shooting with restricted results

Weather data

Price data

IMAGES FROM BIM MODEL DESIGN PROCESS

WEATHER DATA FROM BIM MODEL

COMPARISON

With data that could be compared the results were very reasonable

GBS @ 15.6 °C CALCS @15.5 °C1960

1980

2000

2020

2040

2060

2080

2100

2120

2140

2160

Heating Degree Days

Heating Degree Days

Source

HD

D

GBS Gas

CALCS E

lectri

city

Calcs

Gas

Calcs

Electri

city

0

0.05

0.1

0.15

0.2

0.25

0.3

Cost in cent per Unit

Cost in cent per Unit

Source

Co

st p

er u

nit

in

cen

t(E

uro

)

BER RATING

143.84kWh/m2/yr

C1 Rating

Acceptable rating

For this type of

dwelling

PROJECTIONS FOR SDCC PORTFOLIO 9,008 Similar Units Total Gas consumption = 69,478.704 MWh Total Cost in Euro of Gas = €4,749,089.664

annually. €192,456.01 in Carbon taxes Total Electrical consumption = 49,616.064 MWh Total Cost in Euro of Electricity =

€10,785,368.48 annually Total C02 Released = 14,312.54 Tonnes of C02

released annually solely by Natural Gas

CONCLUSION

Some success but not the desired result

Met all objectives except producing fully functioning BIM

There is room for improvement in the building

THANK YOU FOR YOUR TIME

This presentation is now finished

I am open to any questions you may have