Early energy analysis of a building.

1. ASSIGNMENT 2:
EARLY ENERGY ANALYSIS
BIM 1O12: ENERGY MODELING
INSTRUCTOR: TONY TERSIGNI
T H I E N P H A N | 1 0 1 1 8 2 7 9 4
ISSUED:JULY13TH
2019

2. CONTENTS
1. INTRODUCTION.......................................................................................................................................................2
1.1 OBJECTIVE..........................................................................................................................................2
1.2 BUILDINGSETTINGS.....................................................................................................................2
2. PART 1: ENERGY SAVING....................................................................................................................................3
2.1 BASELINE SYSTEM........................................................................................................................3
2.2 BASELINE IMPROVED SYSTEM............................................................................................4
2.3 COMPARISON...................................................................................................................................5
2.4 CONCLUSION.....................................................................................................................................5
3. PART 2: APACHE ANALYSIS.............................................................................................................................6
3.1 CONSTRUCTION ANALYSIS......................................................................................................6
3.2 CONSTRUCTION R-VALUE ANALYSIS................................................................................7
4. PART 3: SUNCAST ANALYSIS...........................................................................................................................8
4.1 BUILDING WITHOUT CANOPY...............................................................................................8
4.2 BUILDING ADDED CANOPY....................................................................................................8
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3. 1. INTRODUCTION
This energy report will present a whole-building energy analysis and explore
contrasting scenarios by modifying exterior elements of the building, such as the
roof, external walls, windows and doors. This energy analysis will be based on the
conditions of location climate, building type and occupant use, design and specifi-
cations, and building orientations. The listed condition are not correlated but gen-
erate the embodied energy consuption for the building. Although prescribed data
is used in standard conditions, the result of this energy report will become more
refined as the inputs are updated to make the model responsive and dynamic.
1.1 OBJECTIVE
The objective of this energy analysis is to genetare separate scenarios of
baseline and improved baseline in order examine and compare how the settings of
each energy conservation measure (ECM) improve the building design. The com-
parisons will then be documented through in order to generate findings and con-
clusions on the overall energy, cost, and carbon savings of the building. This energy
analysis will also use the data of the improved building design to display apache
and suncast analysis required during the year.
1.2 BUILDING SETTINGS
Location: NYC Central Park, New York
Building Type: Multi-Family
Building Floor Area: 3,136.3 m2
Level 1: 250 people
Level 2, 3: each level 300 people
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4. 2. PART 1: ENERGY SAVING.
2.1 BASELINE SYSTEM:
(Roof, External Wall, External Window, External Door)
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5. 2.2 BASELINE IMPROVED SYSTEM:
(Roof, External Wall, External Window, External Door)
-Concrete with the thickness of 100mm
was increased to 150mm because it has
a higher resistance of 0.075 m2
K/W
-Plasterboard with the thickness of 12.5
mm was increased to 20mm because it
has a higher resistance of 0.0952 m2
K/W
-Insulation with the thickness of 81.4mm
was increased to 100mm because it has
a higher resistance of 4.0000 m2
K/W
-Cavity with the thickness of 12mm was
increased to 20mm because it has a
higher resistance of 0.7089 m2
K/W and
a lower convection coefficient of 1.1965
m2
K/W
-A layer of insulation was added with a
conductivity of 0.0250 W/(m.K) and a
resistance of 1.4800 m2
K/W
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2.3 COMPARITION
2.4 CONCLUSION
Various design and energy conservation strategies have an impact on the
building’s energy performance. Altering the roof, exterior walls, windows and doors
of the building has a great impact on the whole-building energy analysis. By com-
paring the Baseline System to the Baseline improved system, it can be determined
that a U-Value of approximately 1.8415 W/m2
.K is saved, which means a decrease in
the amount of heat transmission through the building. It can also be determined
that a total R-Value of approximately 2.3753 m2
K/W is save, which means an in-
crease the resistance to the flow of heat through the building.
In conclusion, achieving a deducation in total yearly energy consumption
by decreasing the heat transmission and increasing the resistance to the flow of
heat was accomplished by adding new insulation, altering insulation thickness, or
changing insulation to exterior elements of the building that had a lower conduc-
tivity rate (the ability of a material to conduct heat).
BASELINE IMPROVEDBASELINE
U-Value
(W/m2
.K)
Roof
External Wall
External Window
External Door
Total
0.1800
0.2599
1.6000
2.1997
4.2396
5.4163
3.6778
0.7996
0.2846
10.1783
0.1780
0.2178
1.4854
0.5169
2.3981
(-1.8415) (+2.3753)
5.4770
4.4218
0.8902
1.7646
12.5536
U-Value
(W/m2
.K)
R-Value
(m2
K/W)
R-Value
(m2
K/W)
U-VALUE: a meansure of the heat transmission through a building part (such as a
wall or windown) or a given thickness of a material (such as insulation) with lower
numbers indicating better insulating properties.
R-VALUE: a measure of resistance to the flow of heat through a given thickness of
a material (such as insulation) with higher numbers indicating better insulating
properties.

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3. PART 2: APACHE ANALYSIS
3.1 CONSTRUCTION ANALYSIS
The construction image colours represent the attached parameter and clear-
ly reflects all the functions have been assigned as improved elements in the im-
proved baseline.
BASELINEBASELINEIMPROVED

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3.2 CONSTRUCTION R-VALUE ANALYSIS
BASELINEBASELINEIMPROVED
The above images represent the improvement in the Total R-Value from
the improved baseline. The total R-Value achieved in baseline improved is 5.4770
m2
K/W which is higher than that of baseline by 0.0607 m2
K/W.

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4. PART 3: SUNCAST ANALYSIS
4.1 BUILDING WITHOUT CANOPY
The canopy of building cover is one of the most effective solutions to pre-
serve energy inside the building. It also considerate a second skin to increase the
resistance to the flow of heat through the building. Therefore, owner should put
more consideration of canopy requirement in the design proposal of architects. In
order for the project to be suitable with climate conditions and energy saving as
well as money saving.
4.2 BUILDING ADDED CANOPY

10. EARLY ENERGY ANALYSIS | July 2019