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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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

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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

http://images.northrup.org/picture/xl/gorilla/gorilla-face-closeup-2.jpg

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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What About The Road to “Green”?

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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