ASHRAE : Are You Ready? R. Christopher Mathis

Transcription

1 ASHRAE : Are You Ready? R. Christopher Mathis President, Mathis Consulting Company ASHRAE Member ASHRAE Distinguished Lecturer

2 Good News/Bad News ASHRAE Published next week! Goal of 50% more efficient than 2004 Likely won t get there everywhere A few big changes Especially for building envelopes 9/27/2013 Page 2

3 Buildings Matter: US Energy Use Transportation 31% Buildings 41% Industry 28% Source: USEIA /27/2013 3

4 U.S. Energy Consumption Source: USEIA /27/2013 Page 4

5 U.S. Energy Production Renewables 12% Coal Nuclear 21% 46% Oil 1% Natural Gas 20% Source: USEIA /27/2013 5

6 U.S. Energy Production 21% 12% 67% 2/3= Fossil Fuels Source: USEIA /27/2013 6

7 Projections on the Future? 9/27/2013 7

8 World Energy Consumption by Fuel Quadrillion Btu Source: USEIA /27/2013 8

9 9/27/2013 Mathis Consulting Company 9

10 9/27/2013 Mathis Consulting Company 10

11 Doubling in 30 Years! You Are Here 9/27/2013 Mathis Consulting Company 11

12 The Energy Megatrend Increasing demand Supply challenges Peak power National security Economic security 9/27/

13 Commercial Buildings 7% 74% was built 19% before 1989!!! Before to to % of our 74% commercial building stock was built before 2003! 9/27/2013 Mathis Consulting Company 13

14 Residential Buildings 1% New Existing 99% 9/27/2013 Mathis Consulting Company 14

15 US Home Construction by Decade 12.7% 7.1% 4.0% 4.5% 12.2% 12.5% 11.7% 6.1% 10.2% % 9/27/2013 Mathis Consulting Company 15

16 9/27/2013 Mathis Consulting Company 16

17 Age of US Homes 25% 75% Built BEFORE 1990 Pre /27/2013 Mathis Consulting Company 17

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19 U.S. Commercial Construction Billion Square Feet Over 50% new since Total New Retired Source: USEIA, /27/2013 Mathis Consulting Company 19

20 Future Regulatory Landscape IECC Code Development Hearings ICC Final Action Hearings New NAECA Equipment Standards ASHRAE ASHRAE IECC 2015 Published: Includes ASHRAE /27/

21 So where is the Current Minimum Code ( ) in comparison to ? (What is the Standard of Care?) 9/27/

22 Improvements in EUI: 1975 to Present Code minimum is still a long way from Net Zero 9/27/2013 Page 22

23 Climate Zones (Current)

24 Opaque Comparison Roofs CZ3 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 9/27/2013 Page 24

25 Opaque Comparison Walls Above Grade CZ 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 9/27/2013 Page 25

26 Opaque Comparison Floors CZ 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 9/27/2013 Page 26

27 Opaque Comparison Slab-on-Grade CZ Unheated NR NR NR Heated R-7.5 for 12 R-10 for 24 R-15 for 24 9/27/2013 Page 27

28 Fenestration Comparison U-factor CZ3 *up to 40% Fixed 0.57 Operable 0.67 Non-Metal Curtain Wall/Fixed Metal /27/2013 Page 28

29 Fenestration Comparison SHGC CZ3 *up to 40% SHGC North 0.39 SHGC All /27/2013 Page 29

30 Controlling Envelope Air Leakage 2004 General language about minimizing air leakage, specific reference to window and door leakage 2007 Same language as A FOCUS on controlling and limiting air leakage Requires a continuous air barrier Lists approved materials and assemblies Revised vestibule requirements 9/27/2013 Page 30

31 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 9/27/2013 Page 31

32 What s The Future? Better envelopes ASHRAE 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! 9/27/

33 What About Those Other Objectives? Green? Sustainable? Water Management? Energy Star? LEED 4? 189? Net Zero? 9/27/2013 Page 33

34 One Picture of Change 9/27/2013 Page 34

35 The Road to Net Zero Net Zero 50% How Better far? than Code? 40% Next Better Steps? than Code? 30% Better than Code? Minimum Energy Code 9/27/

36 What About The Road to Green? 9/27/

37 90.1 Valuing Efficiency More Code minimum is still a long way from Net Zero 9/27/2013 Page 37

38 Good News ASHRAE 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