Modeling a Sustainable World

Modeling a Sustainable World Lynn G. Bellenger, PE ASHRAE President Pathfinder Engineers & Architects LLP

Sequential Design

Elsevier, The Green Studio Handbook – Environmental Strategies for Schematic Design, Grondzik and Kwok, 2007

Commercial Buildings

Site EUI kBtu/ft2-yr (MJ/m2-yr) 100.0 (1,135)

90 (1020) 75.0 (852)

Existing commercial buildings (2003 CBECS)

79.2 (900) 70.7 (803)

Models of existing stock (Griffiths et al. 2007)

40.3 (458)

Max Tech energy efficient scenario

12.2 (139)

Max Tech energy efficient scenario w/ PV

New buildings base scenario (90.1-2004)

50.0 (568)

25.0 (284)

Net Zero Energy Buildings

Net Zero Energy Buildings

Net Zero Energy Buildings

Plug Load Energy Use Annual Plug Load Energy Use Intensity for a 1.0 W/ft2 Day Plug Power Density 25

kBtu/ft2

20 15 10 5 0 0.8

0.7

0.6

0.5

0.4

0.3

Night Plug Power Density (W/ft2)

0.2

0.1

Commercial Buildings

Site EUI kBtu/ft2-yr (MJ/m2-yr) 100.0 (1,135)

75.0 (852)

90 (1020)

Existing commercial buildings (2003 CBECS)

79.2 (900) 70.7 (803)

Models of existing stock (Griffith et al. 2007)

40.3 (458)

Max Tech energy efficient scenario

12.2 (139)

Max Tech energy efficient scenario w/ PV

New buildings base scenario (90.1-2004)

50.0 (568)

25.0 (284)

0.0

8.91 (101)

Plug loads only 1.0 W/ft2 day, 0.3 W/ft2 unoccupied

Standard 189.1

Standard 90.1

Research Strategic Plan