Transcript ASHRAE SP-102 Advanced Energy Design Guide: Small Office

What’s in the New Advanced Energy
Design Guide for Small Office
Buildings, and How Did We Get There?
Ronald E. Jarnagin
SP-102 Chairman
Pacific Northwest National Laboratory
[email protected]
What’s In the New AEDG?
Document Outline
Climate Zones
Format of Recommendation Tables
Fenestration Recommendations
Lighting Recommendations
HVAC Equipment and System
Recommendations
 Example Building Designs
 How-To Guidance
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February 7, 2005
ASHRAE Winter Meeting, Orlando,
Fla.
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AEDG Document Outline
Introduction
Integrated design process to achieve
energy savings
Recommendations by climate zone
including example building designs
How-to guidance for implementing
recommendations
February 7, 2005
ASHRAE Winter Meeting, Orlando,
Fla.
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New Code Climate Zone Map Used
New Code Climate Map Used
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Fla.
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Recommendations by Climate Zone
 Energy-saving
recommendations for
each climate zone
contained on single page
 Helps achieve energy
savings without costly
calculations or analysis
 Addresses building
envelope, lighting, HVAC
equipment, systems and
service water heating
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ASHRAE Winter Meeting, Orlando,
Fla.
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Format of Recommendations
Climate Zone 1 Recommendation Table for Opaque Envelope
Component
Recommendation
Notes and Details
Item
Roof
Insulation Entirely Above Deck
R-15 ci
EN1-2, 17, 20-21
Metal Building
R-19
EN1, 3, 17, 20-21
Attic and Other
R-30
EN4, 17-18, 20-21
Single Rafter
R-30
EN5, 17, 20-21
Surface reflectance/emittance
Walls
Mass
Slabs
EN6, 17, 20-21
Metal Building
R-13
EN7, 17, 20-21
Steel Framed
R-13
EN8, 17, 20-21
Wood Framed and Other
R-13
EN9, 17, 20-21
No recommendation
EN10, 17, 20-21
R-4.2 ci
EN11, 17, 20-21
Steel Framed
R-19
EN12, 17, 20-21
Wood Framed and Other
R-19
EN12, 17, 20-21
No recommendation
EN13, 17, 19-21
R-7.5 for 12 in.
EN14, 17, 19-21
Mass
Unheated
Heated
Doors
February 7, 2005
EN1
No recommendation
Below Grade Walls
Floors
0.65 initial/0.86
Swinging
U-0.70
EN15, 20-21
Non-Swinging
U-1.45
EN16, 20-21
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Fla.
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AEDG Recommendations for
Fenestration
 Window-to-wall ratio (WWR) limited
to 40%
 Recommendations on window
orientation
 Exterior sun control
 Maximum skylight area of 3%
February 7, 2005
ASHRAE Winter Meeting, Orlando,
Fla.
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AEDG Recommendations for
Lighting
 Lighting power density of 0.9 W/ft2
 Source efficiency of 90 mean
lumens/watt
 Electronic ballasts
 Daylight controls for WWR >25%
within 12 feet of N/S window wall, 8
feet of skylight edge
 Occupancy sensors
 Minimum surface reflectances
February 7, 2005
ASHRAE Winter Meeting, Orlando,
Fla.
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AEDG Recommendations for HVAC
Equipment and Systems
 Higher efficiency unitary equipment –
varies with climate zone
 Motorized outside air damper control
 Economizers needed down to 4.5 tons
 Demand Controled Ventilation
 Lower duct friction rate
 No exterior ductwork
February 7, 2005
ASHRAE Winter Meeting, Orlando,
Fla.
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Example Building Designs
 Features examples of
advanced building
energy designs
 Demonstrates
flexibility offered in
achieving advanced
energy savings levels
 Selected from award
winning designs by
architects
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Fla.
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“How-to” Guidance - Envelope
Figure EN-2
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Figure EN-3
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“How-to” Guidance - Lighting
Figure EN-4
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Fla.
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How Did We Get There?
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Meeting Schedule
Phases of the Project
Peer Reviews
Development Challenges/Issues
The Results
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ASHRAE Winter Meeting, Orlando,
Fla.
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SP-102 Meeting Schedule
 Chairman given a year to complete
project
 11 Meetings/conference calls
 First organizational meeting October
1, 2003
 Last conference call to approve
document May ,2004
February 7, 2005
ASHRAE Winter Meeting, Orlando,
Fla.
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Phases of SP-102 Project
 Groping and sniffing (Toy Store
Exercise)
 Scoping study to assess potential
 Bonding
 Initial drafting and layout
 Refinement of technical
recommendations
 Final document preparation and
assessment
February 7, 2005
ASHRAE Winter Meeting, Orlando,
Fla.
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Peer Reviews
 Peer reviews provided primarily by
committees/individuals from
participating organizations
 Around 100 reviewers actively
participated
 Concept review stage (50%)
 Technical refinement review stage
(80%)
 Final review stage (100%)
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ASHRAE Winter Meeting, Orlando,
Fla.
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Committee Chairman’s Sidebar on
Schedules
 Make sure you really understand what
the timeline is for your project (get it
down in writing)
 Ask for a definition of the key terms,
like “what does a year mean?”
 Learn to appreciate the wisdom of
President Clinton’s famous question in
the middle of the Lewinsky affair,
“define sex?”
February 7, 2005
ASHRAE Winter Meeting, Orlando,
Fla.
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Development Challenges/Issues
 Keeping everyone focused through 11
meetings during the year
 Plug loads – in or out?
 Keeping criteria on single page
 Keeping document within page limit
 Keeping this “simple”
 Possible problems reaching 30% savings
consistently in all locations
 Trying to work with very different styles
 Keeping all constituencies informed
February 7, 2005
ASHRAE Winter Meeting, Orlando,
Fla.
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Did We Do It? You Bet!
 Next up in the 30% series
are retail and highway
lodging
 Working on plans for 50%
and 70% series guides
 Expanded ASHRAE
involvement in LEED
programs is underway
 Guide on sale at 2005
Winter Meeting in Orlando
February 7, 2005
ASHRAE Winter Meeting, Orlando,
Fla.
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Why Should You Care About This?
Concerns over energy
and sustainability will
drive future building
decisions.
As an HVAC&R
professional you will
need the tools to
remain competitive
and help your clients
make informed, cost
effective decisions.
This Guide will be one
of those tools.
February 7, 2005
ASHRAE Winter Meeting, Orlando,
Fla.
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Now, Surely You Must Have a
Question or Two…..
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Fla.
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