Transcript Document

Acknowledgement:
Thanks to Sustainable Buildings
Industry Council (SBIC) for providing
the materials
ENERGY-10 Design Tool
ENERGY-10
to provide a tool that
a designer will use routinely to
guide his or her decisions while
developing the design of lowenergy building.
Eventually all buildings will be
designed to be delightful living,
working, and learning
environments, enhanced by
natural light, requiring minimum
resources to build and operate,
This library, built in 1980, has saved about 39
billion Btu (about $740,000) over its 20 years
operation, compared to a typical library. It cost
no more to build and gets rave reviews from
the librarians and users.
–and that do not impair the environment for following generations.
ENERGY-10 Design Tool
ENERGY-10
ENERGY-10 is suitable
for smaller buildings–
commercial and
institutional buildings
under 10,000 sq. ft. –
and also residential
<10,000 sq
76% of all non-residential
buildings are under
10,000 sq. ft.,
representing 22 % of
the total built floor area
and 26% of the energy use.
This restriction will be removed in Version 2
ENERGY-10 Design Tool
ENERGY-10
Sustainable Buildings
Industry Council
Lawrence Berkeley
National Lab
distribution, user support
training
daylighting
National Renewable
Energy Lab
project lead, passive solar
buildings expertise, PV
U.S. Department
of Energy
Berkeley Solar
Group
funding and oversight
CNE thermal simulation engine
ENERGY-10 Design Tool
ENERGY-10
The Progressive Architecture
Research Award was given to
NREL and SBIC for the
Designing Low-Energy
Buildings with ENERGY-10
package.
Doug Balcomb, author of
ENERGY-10 receiving the award
in the Grand Ballroom at the
Waldorf Astoria, New York
ENERGY-10 Design Tool
ENERGY-10

First user-friendly program based on
hour-by-hour building simulation targeting
early conceptual design decisions

Automates many routine tasks, reducing
time to produce results needed to make design
decisions from days to hours
Graphic input and output
Technically solid
Becoming widely used, both in practice and
for teaching
Major enhancements are in the pipeline





Graphic input, Improved Daylighting, PV…
ENERGY-10 Design Tool
ENERGY-10
Evaluate a wide range of energy-efficient strategies,
working together
Passive solar heating
Daylighting
High Efficiency HVAC
Insulation
Reduced duct leakage
Better windows
Energy efficient lights
Lighting controls
and ballasts
Thermal mass
Better HVAC Controls
Economizer cycle
Reduced infiltration
Shading
ENERGY-10 Design Tool
ENERGY-10
ENERGY-10 focuses on the first phases (conceptual design)
Activity
Phase
Develop Brief
Develop reference case
Develop low-energy case
Rank order strategies
Initial strategy selection
Tool
ENERGY-10
Set performance goals
Pre-design
Schematic Design
Review goals
Review strategies
Set criteria, priorities
Develop schemes
Evaluate schemes
Preliminary team
meetings
ENERGY-10
Select scheme
Design Development
Construction Documents
Confirm that
component performances
are as assumed
EnergyPlus
or other
HVAC simulation
and tools
ENERGY-10 Design Tool
ENERGY-10
Automatic features make it easy and fast
 AutoBuild - defines a complete building
based on five inputs and many defaults
 APPLY - creates a second building
applying upgrades to implement any or
all of 12 energy-efficient strategies
 RANK - determines relative effectiveness
of strategies
ENERGY-10 Design Tool
ENERGY-10

Creates two building descriptions based on five inputs and
user-defined defaults.
•Location
•Building Use
•Floor area
•Number of stories
•HVAC system
Gets you
started
quickly.
For example:
apply
Reference Case
Low Energy Case
R-8.9 walls (4" steel stud)
R-19 roof
No perimeter insulation
Conventional double windows
Conventional lighting
Conventional HVAC
Conventional air-tightness
Uniform window orientation
Conventional HVAC controls
Conventional duct placement
R-19.6 Walls (6" steel stud with 2" foam)
R-38 roof
R-10 perimeter insulation
Best low-e double windows
Efficient lights with daylight dimming
High efficiency HVAC
Leakage reduced 75%
Passive solar orientation
Improved HVAC controls
Ducts located inside, tightened
ENERGY-10 Design Tool
ENERGY-10
20,000 m2 elementary school
ANNUAL ENERGY USE
100
Reference Case
MWh / m²
80
75.8
Low-Energy Case
60
40
30.7
27.4
20
10.7
0
19.3
15.1
5.7
14.9
6.6
0.2
Heating
Cooling
Lights
Other
Total
ENERGY-10 Design Tool
ENERGY-10
ENERGY-10 uses the simulation engine to size HVAC equipment.
The process is automatic and takes only 1 or 2 seconds.
HVAC cost
reductions can
pay the added
cost of all the
other upgrades!
HVAC RATED CAPACITIES, Albuquerque School
Reference Case
Low-Energy Case
802
kBtuh
29484
687
21162
478
349
heating
cooling
CFM
Provides the right information at the right time.
ENERGY-10 Design Tool
ENERGY-10
Automatically modifies the building description to implement any
or all of 12 strategies
Before
apply
After
apply
A few mouse clicks does it—saving time
Yet the user has total control
ENERGY-10 Design Tool
ENERGY-10
RANKING OF ENERGY-EFFICIENT STRATEGIES
78.39
Duct Leakage
Insulation
Daylighting
66.38
48.85
45.96
Glazing
Energy Efficient Lights
HVAC Controls
Air Leakage Control
Passive Solar Heating
High Efficiency HVAC
Shading
Economizer Cycle
-20
40.82
38.73
35.89
26.22
21.12
13.67
2.85
0
20
gives the
relative savings
if strategies
were to applied
individually
40
60
80
Net Present Value, k$
New ranking
options in
Version 1.5:
Net present
value
Internal rate
of return
Benefit/cost
ratio
Simple
payback
Procedures, such as sequencing simulations and rank ordering, are automated, greatly
reducing the time required. This entire set of calculations, including making the plot, took
about 10 minutes.
Parametric analysis helps guide decisions regarding best strategies to meet
design team goals
ENERGY-10 Design Tool
ENERGY-10
Temperatures
Memphis, Tennessee
EVALUATE
ADJUST
90
80
Temperature, ° F
Many powerful graphical
views of the data
100
create new weather files
expands the available
sites 16 fold
70
60
50
40
30
20
10
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Dry Bulb
January 01 - 12 AM to January 01 - 12 AM
CONVERT FILE FORMATS
Sep
Oct
Nov
Dec
Jan
ENERGY-10 Design Tool
ENERGY-10

Full discounted cash flow analysis, accounting for all
relevant factors to support cost/tradeoff decisions during
conceptual design

Ranks based on LCC, IRR, benefit/cost, or simple payback
ENERGY-10 Design Tool
ENERGY-10
HVAC Rated Capacities
Annual Emissions Results
Reference Case
Low-Energy Case
249007
1400
400
250000
Low-Energy Case
12000
386
358
1215
10741
1200
lbs
729
128607
662
600
100000
382
400
50000
300
8000
230
kBtuh
150000
800
10000
Annual CO2 Emissions, Pounds
200000
1000
6851
200
6000
157
4000
100
2000
200
0
SO2
NOx
CO2
0
0
0
Heating
Cooling
Fan
Low-Energy Case - Performance Summary
$0.90
1.0
86.0
80
0.8
34.2
60
55.1
0.60
0.6
10.3
40
20
0
0.4
34.2
40.2
0.16
10.3
1.3
7.6
2.9
0.12
0.01
0.2
Annual Cost, $/sq. ft.
Annual Energy, kBtu / sq. ft.
100
DMAP (3D color)
0.0
Loads Consumption Cost
Other
Lighting
Cooling
Heating
Summary
Solar gains in a passive solar
building every hour of the year
Fan Volume, CFM
Reference Case
ENERGY-10 Design Tool
ENERGY-10
Evaluate
building
energy
performance
Reference Case
(energy hog)
Apply Strategies
Low Energy Case