How much energy is your new
building going to use?
David Cheshire
Richard Belfitt
AECOM
Building management
Occupant density
Operating hours
Special functions (e.g. Swimming pool)
Small power equipment
ICT including servers, telecoms
Assumptions and simplifications in models
Part L calculations
CIBSE TM54 ESTIMATE
PRESENTING THE RESULTS
PRESENTING THE RESULTS
PRESENTING THE RESULTS
COMPARING WITH ACTUAL PERFORMANCE
FANS
0
10000
20000
30000
40000
50000
60000
AHU fans
Predicted
Updated prediction
Actual
FANS
0
5000
10000
15000
20000
25000
30000
35000
AHU fans
kW h
Predicted
Updated prediction
Actual
CHILLERS
0
5000
10000
15000
20000
25000
30000
35000
Chiller
Predicted
Updated prediction
Actual
LIGHTING
0
20000
40000
60000
80000
100000
120000
140000
160000
180000
Lighting
Predicted
Updated prediction
Actual
Debbie Hobbs, Legal and General
Mitch Layng, M&G Real Estate
Crown Estates