Peter Hoffmann, AIA, LEED AP

Building Energy OptimizationMaximizing Return on Investment in Net-Zero and Other Energy-Efficient Buildings

Associate Principal, Page/Austin

Texas Society of ArchitectsA051

Building Energy Optimization59

Peter Hoffmann11-7-2015

Credit(s) earned on completion of this course will be reported to AIA CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.

This course is registered with AIA

CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner ofhandling, using, distributing, or dealing in any material or product.___________________________________________Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

SAMPLE OPTIONAL SLIDE

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This presentation demonstrates a methodical approach that Page used to target net zero energy use for a multifamily project. While the individual strategies used for a multifamily project will differ from those employed for other building types, the strategic and tactical approaches toward achieving the best return on investment are applicable to any building project

CourseDescription

LearningObjectives

1. Help their Client define their energy/sustainability goals.

2. Know who to include in a energy/sustainability programming team.

3. Create a list of Energy Efficiency Measures

4. Evaluate EEM’s Return on Investment based on several metrics

At the end of the this course, participants will be able to:

History Process SummaryIntroduction

Introduction Who We Are

Founded in 1898

Integrated Architectural and Engineering Design Practice

Over 500 Architectural and Engineering Professional

Six United States Offices / Four International Offices

Over 200 Design Awards in the Last Decade Alone

Page Southerland Page, Inc.Austin, Texas

Architecture Engineering Interiors Planning Consulting Commissioning Lab Planning Programming Sustainability

Introduction Market Sectors

AcademicCivic / GovernmentCorporate / CommercialHealthcareHousing / HospitalityScience / Technology

History Process SummaryIntroduction

800 Avondale – spray foam insulation, shading, low e, high efficiency HVAC, solar

Four Points Office Campus – LEED Gold, Core and Shell, minimal footprint in an ecologically sensitive area

Lakeway Regional Medical Center – LEED Silver, EW orientation, natural materials

Veterans Administration Clinic Austin – LEED Silver equivalent, replacement building

Data Centers – high tech and secure – MEP efficiency driven

United Data Center – Brill Award for notable achievements in IT efficiency – mission critical cutting edge tech

United Data Center – Brill Award / LEED Silver – Kyoto heat exchanger

United Data Center – ambient air based cooling for servers/any climate – no water used

United Data Center – Kyoto – no water use – new standard for many locations

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Project Size345,500 Square Feet352 units468 parking spaces

Services ProvidedArchitecture / Interiors / Civil

East Riverside Apartments Austin, Texas

Site Aerial

Site Analysis

Topography & Hydrology

Conceptual Program

Early Concept

Net Zero

Gas Turbine / Co & Tri-generation

Solar

New Project Requirements

History Process SummaryIntroduction

30 Day Road Map

1. Define Vision – Set project Goals

2. Create the Team

3. Identify Energy Efficient Measures

4. Evaluate Return on Investment of EEM’s

Collaborative Project Approach

Begin with your clients vision.

Presidium Group

Capital GroupProperty ManagementEnergy

East Riverside Apartments

- First ground up development- Flagship & test bed for future projects

Client profile

Define Vision – Set project Goals

- Reduce Energy Bills Energy use reductionOn site generation – Solar & Gas Turbine Co/Tri generationConsumption Tracking

- Maximize Marketability of projectNet ZeroLEED

- Create Sustainability focused BrandHigh correlation between near downtown demographicand interest in sustainability

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Create the TeamTo create a conceptual framework to implement vision

- Client, Architect, Energy modelers, Engineers, Cost EstimatorsUtility representatives, Vendors

- Find people with the ability to think/understand issues outside of their area of expertise - Interdependence of systems

- Get team together early – available for brainstorming

East Riverside Apartments Team

Client Presidium Group

Architecture Page/

Energy Modeling Atelier 10

MEP Engineers Page/ (conceptual) + Bay Engineers (design)

Cost Estimating Project Cost Resources

Electric Utility Austin Energy

Photovoltaic Presidium/Alba

Team

Identify Energy Efficient MeasuresEast Riverside Apartments

- Generate energy use base line data (conceptual energy model)

- Leverage your teams knowledge of EEM’sPrevious ExperienceCurrent Developments

- Get the Team in a room and charretteTeam is greater than sum of parts

- Don’t forget the basics

- Be open to new ideas

Atelier 10 conceptual baseline energy model

30

31

Steps to Net Zero – building design measures + central plant measures = 50% savings + renewable energy generation = 0

List of EEMs to achieve Net Zero Energy Cost to be priced

Energy Use Reduction strategies

High Efficiency HVAC

Solar Shading / High performance glass

Central High Efficiency Boilers (Heating & Domestic Hot Water

Daylighting

Energy and water conserving appliances & fixtures

Motion & Occupancy detectors for lighting

Energy use monitoring

High performance envelope

On site Energy production strategies

Solar

Gas Micro Turbines with Co and Tri generation options

Solar Domestic hot water

Ground source cooling

Evaluate Return on Investment of EEM’sEvaluation Criteria

- Energy Reduction/Generation potential- Initial Cost- Operational costs (Fuel, Maintenance, other life cycle costs)- Local Climate Considerations- Local availability of technology- Seasonal/Daily Load variations and rebate structures- Constructability and integration with other building parameters

First stepsEast Riverside Apartments

- Check Rebates

http://www.dsireusa.org/

- Solar definite

- Eliminate easy EEM’s (Green roofs, unproven, etc.)

Road Map

Conceptual Energy Modeling Results

Structural/irrigation/cost

Steps to Net Zero – building design measures + central plant measures = 50% savings + renewable energy generation = 0

Energy Reduction/Generation potential

Energy Reduction- Building Envelope minimal gain - Code- Solar Shading high potential- HVAC high potential- Lighting potential with risks

Energy Generation- Gas Micro Turbine high potential/high risk- Solar rebates/correlation/storage

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2012 IECC

Building Envelope

Conceptual Energy Modeling Results

Building Envelope

Insulation – Diminishing returns

Building Envelope

Insulation – Diminishing returns

Building Envelope

- Energy Reduction/Generation potential

- Initial Cost

- Operational costs (Fuel, Maintenance, other life cycle costs)

- Local Climate Considerations

- Local availability of technology

- Daily/Seasonal Load variations and rebate structures

- Constructability and integration with other building systems

Conceptual Energy Modeling Results

Solar Shading/Gain

Site plan

Solar Shading/Gain

Shutters & windows – visual comfort & design

Solar Shading/Gain

Solar Shading/Gain

- Energy Reduction/Generation potential

- Initial Cost

- Operational costs (Fuel, Maintenance, other life cycle costs)

- Local Climate Considerations

- Local availability of technology

- Daily/Seasonal Load variations and rebate structures

- Constructability and integration with other building systems

Lighting

Daylighting/Occupancy sensors/Garage lighting

Lighting

Daylighting/Occupancy sensors/Garage lighting

Lighting

45

- Energy Reduction/Generation potential

- Initial Cost

- Operational costs (Fuel, Maintenance, other life cycle costs)

- Local Climate Considerations

- Local availability of technology

- Daily/Seasonal Load variations and rebate structures

- Constructability and integration with other building systems

HVAC

Roof space/DOE vs Energy Plus/initial cost

HVAC

Initial cost delta

HVAC

HVAC

HVAC

- Energy Reduction/Generation potential

- Initial Cost

- Operational costs (Fuel, Maintenance, other life cycle costs)

- Local Climate Considerations

- Local availability of technology

- Daily/Seasonal Load variations and rebate structures

- Constructability and integration with other building systems

Gas Micro-Turbines

Energy generation – complementary systems

Gas Micro-Turbines

Gas Micro-Turbines

Tri-Generation

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Gas Micro-Turbines

Too complex for project type – electric alone more expensive than grid

Absorption chillers

Project type complexity

- Energy Reduction/Generation potential

- Initial Cost

- Operational costs (Fuel, Maintenance, other life cycle costs)

- Local Climate Considerations

- Local availability of technology

- Daily/Seasonal Load variations and rebate structures

- Constructability and integration with other building systems

Gas Micro-Turbines

- Energy Reduction/Generation potential

- Initial Cost

- Operational costs (Fuel, Maintenance, other life cycle costs)

- Local Climate Considerations

- Local availability of technology

- Daily/Seasonal Load variations and rebate structures

- Constructability and integration with other building systems

Domestic Hot Water

Central plant/life cycle cost analysis

Domestic Hot Water

Water softening/piping

- Energy Reduction/Generation potential

- Initial Cost

- Operational costs (Fuel, Maintenance, other life cycle costs)

- Local Climate Considerations

- Local availability of technology

- Daily/Seasonal Load variations and rebate structures

- Constructability and integration with other building systems

Solar Power

Making up the deficit

Solar Power

Panel layout and shade study/structural system

Solar Power

Solar Power

Visible Solar

Solar Power

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- Energy Reduction/Generation potential

- Initial Cost

- Operational costs (Fuel, Maintenance, other life cycle costs)

- Local Climate Considerations

- Local availability of technology

- Daily/Seasonal Load variations and rebate structures

- Constructability and integration with other building systems

Advances in energy generation & storage – energy systems test facility

Final Report

History Process SummaryIntroduction

Presidium

1. Define Vision / Clear goals

2. Put together a great Team

3. Identify Energy Efficient Measures

4. Methodically evaluate Return on Investment of EEM’s

5. Format Information

Presidium

Sample Last Slide

This concludes The American Institute of Architects Continuing Education Systems Course

Texas Society of Architects 512-478-7386