Dean’s Cabinet April, 2008

Igor Mezic,Director

Center for Energy Efficient Design (CEED),Head,

Buildings & Design Solutions Group, Institute for Energy Efficiency

Integrated,Energy-Efficient Design

Dean’s Cabinet April 17, 2008

• Integrated Building Systems• Energy Efficiency in Transportation

• Energy Storage• Energy Harvesting and Micropower

(off-grid) Generation• Data Center Cooling• Smart Grid

Dynamics. Control. Computation.

Interdisciplinary. Unifying theme:

Center for Energy Efficient Design

http://iee.ucsb.edu/ceed

What are we trying to do? Why does it matter? Energy Breakdown by Sector

Can we do 70% better in NEW buildings? 90% better?

50% better in RETROFITS?

How is it done today, and what are the limitations of current practice?

•“Properly applied offtheshelf or state-of-the-shelf technologies are available to achieve low-energy buildings. However, these strategies must be applied together and properly integrated in the design, installation, and operation to realize energy savings. There is no single efficiency measure or checklist of measures to achieve low-energy buildings.” -NEED FOR INTEGRATION OF BEST-In-CLAS COMPONENTS•“-There was often a lack of control software or appropriate control logic to allow the technologies to work well together. -Design teams were too optimistic about the behavior of the occupants and their acceptance of systems. -Energy savings from daylighting were substantial, but were generally less than expected. -Plug loads were often greater than design predictions. -Effective insulation values are often inflated when comparing the actual building to the asdesigned building. -PV systems experienced a range of operational performance degradations. Common degradation sources included snow, inverter faults, shading, and parasitic standby losses. “ -NEED INTEGRATED CONTROL SOFTWARE AND UNCERTAINTY ANALYSIS•Each of these buildings saved energy, with energy use 25% to 70% lower than code. Although each building is a good energy performer, additional energy efficiency and on-site generation is required for these buildings to reach DOE’s ZEB goal. -NEED FOR FOR ENERGY EFFICIENT DESIGN BLUEPRINTS

UniqueCookie-cutterFaculty in CCDC

How is it done today, and what are the limitations of current practice?

•“Properly applied offtheshelf or state-of-the-shelf technologies are available to achieve low-energy buildings. However, these strategies must be applied together and properly integrated in the design, installation, and operation to realize energy savings. There is no single efficiency measure or checklist of measures to achieve low-energy buildings.” -NEED FOR INTEGRATION OF BEST-In-CLAS COMPONENTS•“-There was often a lack of control software or appropriate control logic to allow the technologies to work well together. -Design teams were too optimistic about the behavior of the occupants and their acceptance of systems. -Energy savings from daylighting were substantial, but were generally less than expected. -Plug loads were often greater than design predictions. -Effective insulation values are often inflated when comparing the actual building to the asdesigned building. -PV systems experienced a range of operational performance degradations. Common degradation sources included snow, inverter faults, shading, and parasitic standby losses. “ -NEED INTEGRATED CONTROL SOFTWARE AND UNCERTAINTY ANALYSIS•Each of these buildings saved energy, with energy use 25% to 70% lower than code. Although each building is a good energy performer, additional energy efficiency and on-site generation is required for these buildings to reach DOE’s ZEB goal. -NEED FOR FOR ENERGY EFFICIENT DESIGN BLUEPRINTS

UniqueCookie-cutter

What does the DNA of a Zero Energy Building LOOK LIKE?

Faculty in CCDC

From tracking an visualizing temperature sensor data…APRIL OCTOBER

Stanford Precourt Institute building

Stanford Precourt Institute building

APRIL OCTOBER

…to providing REAL-TIME actionable inteligence on Energy Efficiency trouble spots…

Action needed hereAction needed here

The Classroom and Office Building at UC Merced

•92000sq ft. Leed gold buildingA small number of parameters affect energy output!

DOE seed project (with LBL,UTC)

Energy Efficiency in a UC Merced building

…and CRITICAL PARAMETER MANAGEMENT for large Energy savings…

10 20 30 40 50 60 70 80 90 100 110 120 130

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Relative Importance of Each Input Parameter

140 150 160 170 180 190 200 210 220 230 240 250 260

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270 280 290 300 310 320 330 340 350 360 370 380 390

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400 410 420 430 440 450 460 470 480 490 500 510 520

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530 540 550 560 570 580 590 600 610 620 630 640 650

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660 670 680 690 700 710 720 730 740

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Input Parameters

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Optimize for ENERGY SAVINGS

CEED

National laboratories

Funding agencies

International partnerships

Commercial partners

PARTNERSHIPS

Student Affairs

Facilities

KYOYO UNIVERSITYHONG KONGPOLYTECHNIC

University partnerships:Caltech, Stanford, Princeton,…