Retro-Commissioning

60.5 Acres, 41 Buildings, 4.946 MGSF

BUILDING BUILDING PERCENT

DATE GROSS OF TOTAL

1910 to 1930 667,882 18%

1930 to 1960 884,605 23%

1960 to 1980 690,021 18%

1980 to 1990 594,524 16%

1990 to 2000 723,520 19%

2000 to Present 226,851 6%

Age of Facilities

Systems

• Constant Volume• Variable Volume• Duel Duct• Fan coils• DX• Window units

Facilities Engineering

Mission

Lower Operating Costs

Preserve Assets

Improve/MaintainCustomer Satisfaction

CSRB Energy Conservation

Project

$380k Annual Savings, 3 Year payback

West Building HVAC Issues

Staffing Retro-Commissioning

• Reduced Service Contracts• Reorganized the Maintenance

Department

Retro-Recommissioning

• Customers• Maintenance Staff

Retro-Recommissioning

• Customers• Maintenance Staff• Gather Building Data

Retro-Recommissioning

• Customers• Maintenance Staff• Gather Building Data• Calculate Heat Load

Retro-Recommissioning

• Customers• Maintenance Staff• Gather Building Data• Calculate Heat Load• Assess Deficiencies

Retro-Recommissioning

• Customers• Maintenance Staff• Gather Building Data• Calculate Heat Load• Assess Deficiencies• Document Equipment

Retro-Recommissioning

• Customers• Maintenance Staff• Gather Building Data• Calculate Heat Load• Assess Deficiencies• Document Equipment• Prioritize Work

WUSM Total Energy UsageFiscal Years 1992 - 2005

0

300000

600000

900000

1200000

1500000

En

erg

y U

sag

e (

MM

Btu

)

0

600000

1200000

1800000

2400000

3000000

Gro

ss A

rea (

SF

)

Electricity (MMBtu) Coal (MMBtu)Gas (MMBtu) Oil (MMBtu)Gross Area (SF)

Note: Includes only buildings on central systems.

• 5M Annual Savings in FY05• $26M Total Savings from FY92 - FY05

Why Are Existing Buildings Broken?

• Life of Equipment• Space Use • Budget Pressures• Organizational Change• Knowledge Base

What we’re doing about it• Facilities Renewal• Retro-Commissioning• Training• Commissioning • Equipment Standards• Design Guidelines• Controls Guidelines