Bob Fox, Haselden Construction

John Andary, PE, LEED AP, Stantec

Tom Hootman, AIA, LEED AP, RNL

Department of EnergyNational Renewable Energy LabResearch Support Facilities (RSF)

Design Build Team

Haselden Construction

RNL: Architecture, Interiors, Landscape, Lighting

Stantec: MEP, Energy Modeling

KL&A: Structural

Martin/Martin: Civil

AEC: LEED, Daylight Modeling

Namaste Solar: Solar Consultant

Project Objectives

Safety

LEED Platinum

Energy Star

1. Mission Critical

Project Objectives

2. Highly Desirable800 staff Capacity

25kBTU/sf/year

Architectural integrity

Honor future staff needs

Measurable ASHRAE 90.1

Support culture and amenities

Expandable building

Ergonomics

Flexible workspace

Support future technologies

“How to” manual

Real-time PR” campaign

Secure collaboration with outsiders

Building information modeling

Substantial Completion by 2010

3. If PossibleNet zero design approach

Most energy efficient building in the world

LEED Platinum Plus

ASHRAE 90.1 + 50%

Visual displays of current energy efficiency

Support public tours

National and global recognition and awards

Support personnel turnover

Project Objectives

DOE Goal

“To create the technology and knowledge base for cost-effective zero-energy commercial buildings (ZEBs) by 2025.”

The NREL RSF:

• Replicable

• Commercially viable

• “How To” Manual for DOE

ZERO ENERGY BUILDING

Integrated Design

Multiday Eco-Charrette

• Kicked off competition phase of the project

• Included all disciplines in design-build team

• Set zero energy goal

• Determined ZEB and LEED Platinum best practices and strategies

• Developed section first

• Explored relationship of site, program, plan, roof and section for ZEB strategies

• Began early building simulations

Zero Energy Strategies

The Section

PV System

Natural Ventilation

Thermal Mass

UFAD

Labyrinth

Transpired Collectors

Radiant Cooling

Radiant Heating

Workplace

Daylighting

60’

1

2

3

4

Floor Plans

Site Plan

RSF RSF Parking

Massing

East +West Orientations

Zinc Pre-cast Concrete

Transpired Collector

Exterior Materials

Daylighting

Daylighting

DaylightingGlare Control + View WindowDaylight Control + Daylight Window

Daylight Enhancement

Daylight Modeling

Daylighting - Shading

Daylighting - Shading

Aluminum louver in aluminum frame

Aluminum plate window box

Natural Ventilation - Summer Day

50 F to 75 F

Windows / Natural Ventilation

Typical South Bay23% WWR

Typical North Bay26% WWR

Manual

Auto

South

North

Auto

Manual

4 FT

Windows / Natural Ventilation

Workplace - Interiors

Workplace - Interiors

Workplace - Interiors

Cost / Construction – Modularity

Cost / Construction – Modularity

ZEB Definitions

ZEB Definitions

Net Zero Site Energy Building

Net Zero Source Energy Building

Net Zero Energy Cost Building

Net Zero Energy Emissions Building

ZEB - Renewable Energy

The Section - PV

787 KW540 KW

Photovoltaic System

Overview of the PPA Process

Building Owner Solar Developer Utility Company• Gets clean,

renewable energy

• Gets a competitive long term power contract

• Provides roof or site area for PV

• Gets 30% Federal tax credit

• Gets Solar RECS from Utility

• Gets 20 year contract for power

• Installs and maintains equipment

• Gets to claim renewable energy toward renewable portfolio standard

• Provides net metering

LEED Platinum

58

Integrated Design

• Shading Studies

• Energy Demand

• Natural Ventilation

• Wall Sections

• Window / Wall Ratios

• Roof / Floor Ratios

• PV Energy Supply

Pre-Concept Analysis

Integrated Design

“Let there be light!”

Integrated Design

60’

“Poor Man’s” Double Skin Facade

Winter Mode

Summer Mode

• Total cost same• Engineering costs less• Invest in Architecture• Active to passive• Fragile to robust• Longer life• Less cost over life• Simpler

Cost Transfer

Integrated Design

WINDOW SUNSHADE

PRE-CAST SANDWICHPANEL:3” CONCRETE2” RIGID INSULATION6” CONCRETE

LIGHTLOUVERBOUNCES LIGHTDIRECTLY INTOROOM

WINTER SUN

SUMMER SUN

COOL AIR

DOUBLE PANELOW-E GLASS

TRANSPIREDCOLLECTOR

Labyrinth

Labyrinth

Labyrinth + Transpired Solar Collector

Design Simulations

• Energy Demand

• Transpired Collectors

• Thermal Labyrinth

• Double Skin Design

• Data Center Heat Recovery

• Data Center Cooling

• Natural Ventilation

• Daylighting

ZEB - Renewable Energy

RSF ROOF787 KW

3544 MBTU/YR

RSF PARKING540 KW

2432 MBTU/YR

HEATING PLANT(WOOD CHIP)1105 MBTU/YR

GREEN POWER(GRID)

4838 MBTU/YR

ZEB - Renewable Energy

RSF ROOF787 KW

3544 MBTU/YR

RSF PARKING540 KW

2432 MBTU/YR

Meets Site Energy, Source Energy, Energy Emissions and Energy Cost definitions of ZEB with only the roof and parking PV systems.

Beauty in the Numbers

Zero