Mr. Mario Saab`s presentation

Transcription

Leveraging Sustainable Design
through
Building Performance Simulation
Mario Saab
Managing Director,
SEEDS
EcOrient 2012 - www.seeds-intl.com
10%
0.1%
How much carbon will
my design emit per
year?
Could I power my building with
Photovoltaics and wind power?
Will adding better
windows &
insulation help
reduce carbon and
energy use?
How much
energy will my
design use per
year?
How
sensitive
is my
design to
weather
?
Which envelope
material will reduce
energy the most?
Which design will use
the least energy?
Building Up or Out ?
Which way should I
orient my design to use
the least amount of
energy?
Introducing
Building Performance Simulation
Building
• Human-made structure used or intended to
support or shelter any use or
continuous occupancy
Performance
• The efficiency with which something fulfills
its intended purpose
Simulation
• Computer Modeling of a real-life situation
to study and optimize the behavior of the
system.
Factors affecting the performance
Orientation
Massing
Material selections
Construction methods
Building envelope
Water Efficiency
HVAC systems
Lighting systems
Degree of Performance analysis
Whole
Building
System
Zone
Window
Sensitivity
Green Building certification systems
Site Analysis & OPR
Area Location: Beirut Sea-Front
•
Site: 6000 m2
•
Building Type:
Mixed-used Tower
with a GFA of 100,000 m2
•
Function distribution:
– 4 Parking levels (22000 m2)
– Retail, Shopping,
Restaurants (18000 m2)
– Offices (30000 m2)
– Hotel (25,000 m2)
Climate Analysis
Typically South-Westerly prevailing winds
Climate Analysis
Thermal Comfort ranges from 21.5C to 28 C
Summer is hot and winter is mild
Climate Analysis
Humidity is often greater than normal
comfort limits
Climate Analysis
High Potential for use of Solar thermal & PV panels due to
the great availability of direct & diffuse solar radiation
Architectural Massing Option A
Architectural Massing Option B
Architectural Massing Option C
Architectural Massing Option D
Massing Option A
Massing Option B
Massing Option C
Massing Option D
182
161
kWh/m2
kWh/m2
A
B
177
172
kWh/m2
kWh/m2
C
D
Shadow Analysis
Wind Load Analysis
Wind Load Analysis
Wind Load Analysis
Solar Analysis
Solar Analysis
Solar Analysis
Solar Analysis
Solar Analysis
Solar Analysis
Solar Analysis
Solar Analysis
Proposed Design
Daylighting Analysis
Adding Shading
Energy Use Intensity
Enhanced Envelope Material Selection
Model Input Parameter
/ Energy Efficiency
Measure
Baseline Case (Climate Zone 3C)
Description
Roofs (Residential)
Insulation entirely
above metal deck
Insulation Assembly U-factor/
R-value
C-factor/ F-factor
(m2.K/W) (W/m2.K)
Proposed Case
Description
Insulation R- Assembly U-factor/ Cvalue
factor/ F-factor
(m2.K/W)
(W/m2.K)
2.600
Continuous rigid
U-factor = 0.360 insulation above a
mass floor
1.724
U-factor = 0.51
2.3
8 in HW - 2 in
U-factor = 0.642 Insulation - 4 in LW
Concrete
2.8
U-factor =0.525
Walls - Above Grade
Steel-framed
Walls - Below Grade
300mm concrete
-
U-factor = 3.641
300mm concrete
C-factor = 6.473
-
U-factor =2.784
C-factor = 4.18
Floors
Steel-joist
-
U-factor = 0.296 Steel-joist
-
U-factor = 0.296
Slab-On-Grade Floors
(Basement Floor)
Uninsulated
-
F-factor = 1.264
W/m-K
Uninsulated
-
F-factor=1.264 W/m.K
Vertical Glazing
As per Table 5.5-1
(90.1-2007)
SHGC =
0.25 / SC=
0.29
U-value = 3.24
W/m2K
Low-E Triple Glazing
SC = 0.2
Assembly U-value = 1.5
W/m2K
Adopting Variable Air Volume System
with Heat Recovery
CFD Dispersion Modeling
CFD Dispersion Modeling
Analyzing use of Photovoltaics
June
January
690 m2 of
roof
(400 m2 of
PVs)
Solar
resource
of 2000
kWh/m2
yearly
80
MWh/year
PVs facing
south at
30 deg
(Eff:10%)
Analyzing UFAD using CFD
Performance simulation feedback chart
Model
Simulate
Analyze
Results
EEMs and Final savings
Progress of Energy Use Intensity
17500
17000
16500
16000
15500
15000
14500
14000
13500
13000
12500
16.55 %
Annual Savings
2780 MWh
Annual Savings
5 LEED C&S EAc1 pts
333,600,000 L.L !
222,400 USD !
T h a n k Yo u
Consulting – Simulation – Education
www.seeds-intl.com

Mr. Mario Saab`s presentation

Transcription

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