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Building Energy Efficiency:

The Path To Optimization

Cary Vandenberg, CEO

Agilewaves, Inc

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Santa Barbara Energy Efficiency 2010

The Mandate: Net-Zero Energy Buildings

! Department of Energys definition:A residential or commercial building

with greatly reduced needs forenergy

through efficiency gains(60 to 70 percent less than

conventional practice

)

with balance of energy needs (30%)

supplied by renewable technologies. Efficiency

! National NZEB goals/Built Environment:" 50% of all commercial buildings by 2040

! Buildings Consume 39% of U.S. Energy

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Santa Barbara Energy Efficiency 2010

The Challenge in Built Environment

! Currently comprised ofsilos of data:

" HVAC" Lighting" IT / Data Centers" Other Plug Loads

Whats needed?

Holistic

the properties of a

given system cannot

be determined... by its

component parts

alone. Instead, thesystem as a whole

determines in an

important way

how the parts behave Source: Wikipedia

! A holistic system that transforms data intoactionable information and drives improved

building performance

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Trends Underpin Holistic EE Solutions

! Rising Energy Costs! Internet connectivity and ubiquity of low cost

IT components (HW, SW, Sensors)

! Growing awareness of GHG & conservation! Utility Rebates and Decoupling! Govt Regulations, Incentives, & Stimulus! Financing of EE and Renewable Energy

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Santa Barbara Energy Efficiency 2010

Building Performance Infrastructure

Instrumentation Optimization Algorithms IP Access

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Santa Barbara Energy Efficiency 2010

Building Performance-Command Center

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UniversityCampus Hall

First FloorSecond FloorThird FloorFourth FloorFifth FloorSixth FloorCentral PlantHW SystemCHW SystemChiller 1Chiller 2Chiller 3Secondary PuCooling TowersMass Spec.

Perpetual Tuning: Water vs Electric

Map

CT-1 Chilled Water Return

CT-1 VFD

5000

3750

2500

1250

0

1 Week Average: 18.1 KW

1 Week Total: 137,854 Gallons

Potential leak

Cooling Tower 1,

Chilled WaterReturn

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Santa Barbara Energy Efficiency 2010

Optimization Validating Performance

Failed PV System

Failed Solar

Thermal System

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Santa Barbara Energy Efficiency 2010

Sustaining Optimization Via

Monitoring-based Commissioning

Source: Lawrence BerkeleyNational Lab , Mills, 2009

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