ASHRAE 90.1-2010: Are You Ready? - c.ymcdn.com · Good News/Bad News ASHRAE 90.1-2013 Published...
Transcript of ASHRAE 90.1-2010: Are You Ready? - c.ymcdn.com · Good News/Bad News ASHRAE 90.1-2013 Published...
ASHRAE 90.1-2010:
Are You Ready?
R. Christopher Mathis
President, Mathis Consulting Company ASHRAE Member
ASHRAE Distinguished Lecturer
Good News/Bad News ASHRAE 90.1-2013
Published next week!
Goal of 50% more efficient than 2004 Likely won’t get there everywhere…
A few big changes… Especially for building envelopes…
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Buildings Matter: US Energy Use
Buildings
Industry
Transportation 41%
28%
31%
Source: USEIA - 2012
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U.S. Energy Consumption
Source: USEIA - 2012
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46%
20% 1%
21%
12%
U.S. Energy Production - 2011
Coal
Natural Gas
Oil
Nuclear
Renewables
Source: USEIA - 2012
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U.S. Energy Production
67% 21%
12%
Source: USEIA - 2012
2/3= Fossil Fuels
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Projections on the Future?
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World Energy Consumption by Fuel Q
uadr
illio
n Bt
u
Source: USEIA – 2012
1990 – 2035
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9/27/2013 Mathis Consulting Company 9
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You Are Here…
Doubling in 30 Years!
Increasing demand
Supply challenges
Peak power
National security
Economic security
The Energy Megatrend
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74%
19%
7%
Before 19891990 to 19992000 to 2003
93% of our commercial building
stock was built before 2003!
Commercial Buildings
74% was built before
1989!!!
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99%
New Existing
1%
Residential Buildings
9/27/2013 14 Mathis Consulting Company
US Home Construction by Decade
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7.1% 4.0%
4.5%
6.1%
10.2%
11.7%
19.1%
12.5%
12.2%
12.7%
1919
1929
1939
1949
1959
1969
1979
1989
1999
2009
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Age of US Homes…
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75% Built
BEFORE 1990
25%
Pre-1990
1990-2009
U.S. Commercial Construction
-75
-55
-35
-15
5
25
45
65
85
105
2010 2015 2020 2025 2030 2035 2040Billi
on S
quar
e Fe
et
Total New Retired
Over 50% new since
2010
Source: USEIA, 2013
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2013 2015 2014
Future Regulatory Landscape
2016
ICC Final Action
Hearings
ASHRAE 90.1-2013
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New NAECA Equipment Standards
IECC Code Development
Hearings
IECC 2015 Published:
Includes ASHRAE 90.1-2013
ASHRAE 90.1-2016
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So… where is the Current Minimum Code
(90.1-2013) in comparison to
90.1-2004?
(What is the Standard of Care?)
Improvements in EUI: 1975 to Present
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Code minimum
is still a long way
from “Net Zero”
Climate Zones (Current)
Opaque Comparison – Roofs
2004 2007 2010 Insulation Entirely Above Deck
R-15 R-20 R-25
Metal Building R-19 R-19 R10 + R19FC Attic and Other R-30 R-38 R-38
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CZ3
Opaque Comparison – Walls Above Grade
2004 2007 2010 Mass R-5.7ci R-7.6ci R-7.6ci Metal Building R-13 R-13 R-0 + R-9.8ci Steel Framed R-13 R-13 + R-3.8ci R-13 + R-5ci Wood Framed R-13 R-13 R-13
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CZ3
Opaque Comparison – Floors
2004 2007 2010 Mass R-6.3ci R-6.3ci R-10ci Steel Joist R-19 R-19 R-19 Wood Framed R-19 R-19 R-30
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CZ3
Opaque Comparison – Slab-on-Grade
2004 2007 2010 Unheated NR NR NR Heated R-7.5 for 12” R-10 for 24” R-15 for 24”
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CZ3
Fenestration Comparison – U-factor
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*up to 40% 2004 2007 2010 Fixed 0.57 Operable 0.67 Non-Metal 0.65 0.35 Curtain Wall/Fixed 0.60 0.50 Metal 0.65 0.60
CZ3
Fenestration Comparison – SHGC
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*up to 40% 2004 2007 2010 SHGC North 0.39 SHGC All 0.25 0.25 0.25
CZ3
Controlling Envelope Air Leakage 2004 – General language about minimizing air
leakage, specific reference to window and door leakage
2007 – Same language as 2004
2010 – A FOCUS on controlling and limiting air
leakage Requires a continuous air barrier Lists approved materials and assemblies Revised vestibule requirements
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Other Major Improvements Lighting Power Densities Lighting and Daylighting Controls Equipment Efficiencies Equipment Controls Deadbands, setbacks, off-hour, damper controls, etc.
Economizers Heat Recovery Refined Modeling Rules Commissioning Critical Systems
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What’s The Future? Better envelopes ASHRAE 90.1-2013 will really help!
More daylighting and daylighting controls Better management of fenestration heat gain Greater visible light availability and utilization
More efficient equipment Federal minimums will continue to improve Next increment set for 2014!
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What About Those Other Objectives? Green? Sustainable? Water Management? Energy Star? LEED 4? 189? Net Zero?
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One Picture of Change…
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The Road to “Net Zero”
Minimum Energy Code
30% Better than Code?
40% Better than Code? 50% Better than Code?
Net Zero
Next Steps? How far?
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90.1 – Valuing Efficiency More
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Code minimum
is still a long way
from “Net Zero”
Good News ASHRAE 90.1-2013
Published next week
Goal of 50% more efficient than 2004 Likely won’t get there everywhere…
A few big changes… Especially for building envelopes…
A few really big opportunities for the fenestration
industry…
9/27/2013 Page 38