2006 green eggs presentation
TRANSCRIPT
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