case study: zero net energy and the changing shape of architecture
DESCRIPTION
Join us as Finegold Alexander presents the study for the Lowell Trial Court, a 250,000 SF state courthouse designated by Gov. Patrick’s Zero Net Energy Building Task Force as one of three public demonstration projects addressing the challenge of designing public buildings to high sustainability standards. The engineering components of the study involved proposals for energy reduction and on-site production, investigated through a multitude of computer models and cost-to-benefits charts and analysis. Architecture and architects must change. Architectural form is a critical element in achieving any sustainable goals, including zero net energy. This session will look at the Lowell Trial Court design process and the iterative schemes the team produced. We will discuss building massing, orientation, urban context and all the elements we always address in every project. Now we find our attitudes toward these traditional design criteria are influenced by the integration of sustainable design. Design for zero net energy caused this team to think and collaborate differently with consultants, client and user groups.TRANSCRIPT
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Case Study: Trial Court, Lowell, Massachusetts
Governor’s ZNEB Task Force
Demonstration Project
Zero Net Energy and the Changing Shape of
Architecture
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
“A Zero Net Energy building is one
that is optimally efficient and,
over the course of a year,
generates energy onsite,
using clean renewable resources,
in a quantity equal to or greater than
the total amount of energy consumed onsite.”
• Governor’s ZNEB Energy Task Force Report 3/11/09
ZNE Definition
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
• Minimize Energy Use
ZNE Design Challenges
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
• Minimize Energy Use
• Apply Renewables
ZNE Design Challenges
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
• Minimize Energy Use
• Apply Renewables
• Integrate Architectural and Systems Designs
at Concept Phase
ZNE Design Challenges
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
• Minimize Energy Use
• Apply Renewables
• Integrate Architectural and Systems Designs
at Concept Phase
• Life Cycle Cost Analysis – First Cost vs
Operating Cost
ZNE Design Challenges
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Philosophical Challenges
• Should building advertise it is ZNE?
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Philosophical Challenges
• Should building advertise it is ZNE?• How to express program and energy on the
exterior?
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Philosophical Challenges
• Should building advertise it is ZNE?• How to express program and energy on the
exterior?• Is ZNE a moral imperative regardless of cost?
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Philosophical Challenges
• Should building advertise it is ZNE?• How to express program and energy on the
exterior?• Is ZNE a moral imperative regardless of cost?• Can energy strategies have psychological
impact?
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Philosophical Challenges
• Should building advertise it is ZNE?• How to express program and energy on the
exterior?• Is ZNE a moral imperative regardless of cost?• Can energy strategies have psychological
impact?• What is a “Demonstration Project” ?
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Philosophical Challenges
• Should building advertise it is ZNE?• How to express program and energy on the
exterior?• Is ZNE a moral imperative regardless of cost?• Can energy strategies have psychological
impact?• What is a “Demonstration Project” ?• Is the owner committed?
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Philosophical Challenges
• Should building advertise it is ZNE?• How to express program and energy on the
exterior?• Is ZNE a moral imperative regardless of cost?• Can energy strategies have psychological
impact?• What is a “Demonstration Project” ?• Is the owner committed?• Will the users be educated?
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
ZNE Buildings USA
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Hawaii Gateway Energy Center, USA
20053,600 SF
Ferraro Choi And Associates, Ltd.
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Hawaii Gateway Energy Center, USAFerraro Choi And Associates,
Ltd.
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Aldo Leopold Legacy Center, WI
200711,900 SF
The Kubala Washatko Architects, Inc.
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
A J Lewis Center for Environmental Studies, OH
200013,600 SF
William McDonough + Partners
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
National Renewable Energy Laboratory Research Support Facility, CO
2010/2011222,000 SF
RNL Design with Stantec
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
SUPERGREEN OUTSIDE USA
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
BREEAM, UKEnvironmental Assessment
Method for Buildings Around The
World
110,000 buildings certified
over 500, 000 registered for certification
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Salisbury Law Courts, UK
200940,700 SF
Stride Treglown/ Fielden and Mawson
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Salisbury Law Courts, UKStride Treglown/ Fielden and
Mawson
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Salisbury Law Courts, UKStride Treglown/ Fielden and
Mawson
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Leeds Metropolitan University, UK
2007110,600 SF
GWP Architecture Ltd
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
G park Blue Planet, UK
2008382,000 SF
Chetwoods Architects
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Zero Net Emissions Development, Wallington, UK
200282 units + 27,000 SF of offices
The ZED Factory Ltd
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Passivhaus Institut Darmstadt (PHI)
quality criteria for Passive Building:
Annual heating requirement ≤
15kWh/(m²a)
Primary energy consumption ≤
120kWh/(m²a)
Air tightness for building envelope n50 ≤ 0.6/h
PASSIVHAUS, Germany
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
PASSIVHAUS, Germany
Existing Buildings New Buildings Passive Building
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
20092010 Pasivhaus Award – 1st prize
Multi family house, SwitzerlandHalle 58 Architekten
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
20032,750 SF
Office Building, Boladen, Germanyoehler + faigle archkom
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
200280,000 SF
Energon Passive Office, Germanyoehler + faigle archkom
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Energon Passive Office, Germanyoehler + faigle archkom
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
200486,111 SF
Primary SchoolFrankfurt, Germany
Architekten 4a
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
MINERGIE-P – Standard defines buildings with a very low energy consumption, (especially heating energy demand)
Corresponds to the international passive –house standard.
Some requirements:
10”-14” insulation,
R=min 25 for walls, roof , floors.
Switzerland
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
HOLINGER SOLAR OFFICES, BUBENDORF, CH
20046,700 SF50% Thermal solar energy50% Electrical water heater
Solar OfficesBubendorf, CH
F. Fregnan, FHBB, Muttenz
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
200772,473 SF 80% Gas20% Solar Thermal
SporthalleRuti, CH
Architekturbüro Beat Ernst
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
2007153,000 SF 100% GSHP
Lager Umnutzung StoreAlbis, CH
Stücheli Architekten AG
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
ZNE FUTURE BUILDINGS
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Energy Tower by SOM, China
20112.3 million SF Wind turbines in mechanical floors
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Burj Al- Taqa, UAEEckhard + Gerber Architekten
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Vision
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Case Study of Courthouse
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Supreme Court
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Fall River Justice Center
LEED Gold Pending
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
100%
ASHRAE Building
73%
Fall River Justice Center
• Daylight in Courtrooms
• Natural Ventilation
• Total Energy Wheels
• CO2 Control of Fresh Air
• Variable Speed Drives
• Premium Efficiency Motors
• Systems Commissioning
Fall River Justice CenterEnergy Reduction Strategies
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Lowell Trial Court
Zero Net Energy Building
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Dignity
Community
Security
Universal Access
Sustainability
Lowell Trial CourtGuiding Principles of Design
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Lowell Trial Court250 000 SF Program
• 5 Court Divisions
• 16 Jury Courtrooms
- Judicial & Jury Deliberation Suites
- Jury Assembly
• Clerk & Probation Transaction Offices
• Detainee Holding
• Library, Grand Jury, District Attorney
• Building and Court Support
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
• Benchmark Research
• Alternative Energy Solutions
• Preferred Energy Solution
– Energy Reduction Strategies
– Renewable Energy Strategies
Zero Net Energy Project Approach
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Organizing PrinciplesCourtrooms Set
100’
60’
Circulation Zones
Public
Private
Secure
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Various Courtrooms Configurations
2 courtrooms per floor
4 courtrooms per floor
6 courtrooms per floor
6 courtrooms per floor
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Proposed Configuration
4 courtrooms per floor
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
• Respond to urban context & site
• Civic presence
• Maximize Natural Daylight
• Fulfill Program
Design Objectives
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Energy Cycle
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Lowell Trial CourtEnergy Reduction
• Natural Ventilation
• Enhanced Façade Performance
• Chilled Beams
• Displacement Ventilation
• Natural and Artificial Lighting
• Ground Source Heat Pumps
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Energy Consumption with Proposed Systems Compared to Base100%
100% 52%
0%
73%
ASHRAE Based Building Fall River Trial Court
Lowell Trial Court
Energy Reduction
11,057 x10^6
BTU/Year
7,980 x10^6 BTU/Year
5,720 x10^6 BTU/Year
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Renewable Options Considered
• Solar Wall
• Photovoltaics
• Solar Thermal
• Wind Power
• Biofuel Boiler
• Biofuel CHP
• Hydropower
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
• Solar Wall 4 % $208,000
• Photovoltaics 6-17 % $2-
$3.6m
• Solar Thermal 6 % $1.3 m
• Biofuel CHP 52-64 %
$500,000
• Biofuel Boilers 34-39 % $120,000
• Hydropower * 100 % no data
Potential Savings Cost
Renewable Options Considered
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Options Considered
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Lifecycle Costs
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Lifecycle Costs
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Renewable Energy
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Preferred Options
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Proposed Option 2E
36 % Renewables Zero Net Energy
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Lowell Trial Court Case Study
Original Goal : LEED Silver
Revised Goal : LEED Platinum
Toward: Zero Net Energy
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Basic Building Configurations & Siting
Less efficient 10% More efficient
No impact
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
30º Rotation
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
• 12 of 16 courtrooms with direct natural light
Energy Reduction
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
• 12 of 16 courtrooms with direct natural light
• 2 of 3 double height public spaces -
community gardens
Energy Reduction
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
• 12 of 16 courtrooms with direct natural light
• 2 of 3 double height public spaces -
community gardens
• Lightwell in collegial suite - more integral
Energy Reduction
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
• 12 of 16 courtrooms with direct natural light
• 2 of 3 double height public spaces -
community gardens
• Lightwell in collegial suite - more integral
• Enhanced Façade Performance
Energy Reduction
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
• 12 of 16 courtrooms with direct natural light
• 2 of 3 double height public spaces -
community gardens
• Lightwell in collegial suite - more integral
• Enhanced Façade Performance
• Chilled Beams
• Displacement Ventilation
• Ground Source Heat Pumps
Energy Reduction
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Massing
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Program
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Program
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Program
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Program
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Daylight
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Air Circulation
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Air Circulation
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Energy Strategies
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Community Court
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
The Learning Curve
ZNE
PLATINUM
GOLD
LEED SILVER
MASS LEED+
CODE MIN. ‘98 2000 ‘02 ‘04 ‘06 ‘08 ‘10 ‘12 ’1
4‘16
Today
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
“You build with stone, wood, cement;
You make houses, places:
That’s construction.(..)
Then suddenly you catch my heart,
I’m happy and I say: that’s beautiful.
That’s architecture.”
Le Corbusier
Le Poeme de l’angle droit, 1955
Finegold Alexander + Associates Inc.Nexus Green Roundtable February 16, 2011
Sherman “Pat” Morss, Jr., AIA, LEED APAssociate Principal
Tony Hsiao, AIA, LEED APPrincipal, Director of Design
Asia Dubiel, LEED APProject Designer
Finegold Alexander + Associates77 N Washington Street
Boston MA 02114
(617) 227-9272
www.faainc.com
Presenters