The lawrence berkeley national laboratory: a case study Revised 12/2/04.

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Presentation transcript:

the lawrence berkeley national laboratory: a case study Revised 12/2/04

Contact Information: Dale Sartor, P.E. Lawrence Berkeley National Laboratory Applications Team MS University of California Berkeley, CA (510)

Case Study: The Lawrence Berkeley National Laboratory The LBNL In-House Energy Management Program Retrofit Projects New Construction Program Cost and Impact Utility Cost Management Lessons Learned

Strategies Organizational structure IHEM studies and retrofits Life-cycle cost effective designs Maintenance Lowest utility cost Recharge users Employee awareness Track performance R & D

Key Barrier and Success Factor Institutional Challenge: Success = Change Key to Success: Upper Management Support

Staff Dedicated in-house engineers, and project managers. Scientists borrowed from research division. Consultants.

Retrofit Projects –Direct funded –Utility surcharge funded –Energy Savings Performance Contract Energy Efficiency Studies (40+ since 1985) Energy Efficiency Retrofits (30+)

Typical Retrofit Projects Constant Velocity VAV Fume Hood control. VFD control for fans and pumps. DDC/EMCS (over 8,000 points in place). T-8/Electronic Ballast lighting. Occupancy sensor controlled lighting. LED exit signs. CFLs.

Typical Retrofit Projects, continued Premium Efficiency Motors. Consolidation of Boiler and Chiller plants. Modular boilers. Small base loaded chillers.

Typical Retrofit Projects, continued Mechanical equipment replacements. Waterside economizers. Metering. Process.

Instrumented Surveys Uncovers “hidden” opportunities. Improves quantification of savings. Aids in commissioning and persistence. Can save purchase of new unneeded capacity.

New Construction Conceptual Design Report Energy Efficiency Report Project team participation Good retrofit projects

Reduce Load Focus on the big hits

Goal Energy Efficiency is the Base Case!

Opportunities are Real 41% reduction in energy use per square foot from 1985 baseline $4.4 million/year more research based on 1985 energy prices Pollution savings Improved worker productivity Safer environment Improved reliability

Reduction in Buildings BTUs/GSF Opportunities are Real

Investment Required Studies: $2.6 million Retrofit: $20 million

Utility Cost Management Billing errors (Typically $ K/year) Electricity: $.035/KWh (-) Natural Gas: Defense Fuel Supply Center Saving $.10/Therm Overall 40% savings due to rate reduction

Integrated Supply and Demand Side Energy Management Potential Savings Over 60% Baseline:$11.0 million Actual:$ 3.8 million Overall savings: $7.2 million (or 65%)

Lessons Learned Outside air dominant load - focus on HVAC. Fume hood VAV (constant velocity) safe and efficient. DDC/EMCS to zone. Commissioning and ongoing O&M important. Don’t oversize boilers and chillers - use modular units. Avoid reheat. Technology is improving.

Success Factors Champion Identify hot buttons Upper management support

End of Session