2006 green eggs presentation

Green Eggs

Bringing the Engineer to the Table

March 1, 2006

Moomaw House, Williamstown, MA

Key integration moment:

Team commits to building envelope performance.

Coldham ArchitectsEnergysmiths – Environmental Consultant

•Zero Energy Goal •6KW PV Array•3 Ton GSPH•90oF Ave. Water Temp•11.3 BTU/Hr/S.F. Heat Loss

West Side Pump Station

Key integration moment:

Petitioned state DES to waive ventilation rules.

Coldham ArchitectsEnergysmiths – Environmental Consultant Old Roofscape

Owner Goal:

“Keep equipment as simple as possible.”

Elimination of cooling and large reduction in ventilation dramatically simplifies system

New Roofscape

Post Construction Photo shows simplified roof equipment

Green Woodlands, Lyme, NH

Key integration moment:

Architect Stu White spends day at Petersen Engineering optimizing energy model.

Barnwell ArchitectsBruss Construction – GMBuilding Envelope Solutions – Envelope ConsultantPaul Leveille – Environmental Consultant

No utilities available

Hydro and solar primary power sources

LEED for Homes pilot project

Infiltration in ventilation loads reduced.

Energy Model Options

% Change in Energy Efficiency

-5.3%

-2.3%-0.8%

0.5% 0.8% 0.8%

13.6%

23.5%

16.4%

3.0%

-9.8%

-15.0%

-10.0%

-5.0%

0.0%

5.0%

10.0%

15.0%

20.0%

25.0%

30.0%

0.2 AC/Hr 28% MoreSW Glass

30% MoreNW Glass

20% MoreSE Glass

28% LessSW Glass

SouthOrient.

20% LessSE Glass

65degSetback

2x6 Wall Triple Pane HigherSHGC

Options Modeled

% In

crea

se/D

ecre

ase

in E

ner

gy

Eff

icie

ncy

Chart shows relative impact of envelope variable on energy model

40kBtu/S.F./yr. modeled total energy use

White Mountain School, Bethlehem, NH

Key integration moment:

Architect Rick Renner includes Petersen Engineering in pre-schematic design meeting with science faculty.

Richard Renner ArchitectsBruss Construction – CM

Final boiler sizing made with understanding that extended hood use combined with cold weather will over-cool building

50kBtu/S.F./yr. modeled total energy use

River House, York, ME

Key integration moment:

Petersen Engineering sees “heating problem” as an envelope issue and collaborates with building envelope consultant.

Building Envelope Solutions – Envelope Consultant

Project Goal:

Adapt for year-round occupancy

Nubi River Co-housing, Peterborough, NH

Key integration moment:

Team signs on to district wood pellet boiler plant with no fossil fuel backup.

O’Neil Pennoyer ArchitectsEnergySmiths – Environmental ConsultantsBruss Construction - CM

45,000 total S.F.

29 Units of Housing

Heating and domestic hot water off central wood pellet boiler plant

Longfellow Office Building, Portland, ME

Key integration moment:

Architect Scott Simons initiates raised floor building systems approach.

Scott Simons Architects

Energy model progress showing proposed building and future adjacent building

Community Campus, Portsmouth, NH

Key moment:

Discovery of Energy Star Target Finder website.

Appendix B-1Annual Combined Gas and Electric Energy Consumption

137.6

126.7

206.4209.9 211.7

127.9

69.9

189.3

93.9

0

50

100

150

200

250

2000 2001 2002 2003 2004 2005* 50% 75% 90%

* Data for 2005 is prorated from October through December.** Target rates based on energy consumption & building characteristics data obtained by the USDOE, Energy Information administration's 1999 Commercial Buildings Expenditures & Consumption Survey.

Th

ou

san

ds

of

Btu

's p

er S

qau

re F

oo

t p

er Y

ear

(kB

tu/S

q.

Ft.

/yea

r)

Measured

Target

Blue columns indicating energy use history

212 kBtu/S.F./yr. peak energy use

Purple columns show Energy Star targets at 50%, 75% and 90%

94 kBtu/S.F./yr. Energy Star energy use