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Wurster Hall MBCx Project

Wurster Hall MBCx Project. October 30th, 2008. Project Overview. Project Goals Project Objectives Identify Low Cost/No Cost Measures Identify Retrofit Opportunities Install Additional Metering for M&V and Persistence. Wurster Hall. Architectural Building

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Wurster Hall MBCx Project

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  1. Wurster Hall MBCx Project October 30th, 2008

  2. Project Overview • Project Goals • Project Objectives • Identify Low Cost/No Cost Measures • Identify Retrofit Opportunities • Install Additional Metering for M&V and Persistence

  3. Wurster Hall • Architectural Building • Library, Studios, Offices, Workshops • Approximately 220,000 Sqft • No Mechanical Cooling • Constant Volume HVAC • Steam to Hot Water Pre and Reheat

  4. Typical Floor Plan

  5. Baseline Energy Use • Electric

  6. Baseline Energy Use • Steam • Steam use is currently not trended for Wurster Hall • QuEST has designed two steam meters for installation and connection to the Obvius System • QuEST has installed Hot Water Flow Meters and temperature sensors to calculate the steam energy use until the Steam Meters are installed.

  7. Systems - Steam • There are 2 steam sources for Wurster. Each has a steam to hot water HX.

  8. Systems - AHU • AHU 1 – VFD & IGV • Serves South Tower

  9. Systems - AHU • AHU 1 Exhaust– VFD or IGV • Serves South Tower: Foundry, Sawdust, and Zone

  10. Systems - AHU • AHU 2 - IGV • Serves North Tower Floors 2-4

  11. Systems - AHU • AHU 3 – IGV • Serves North Tower Floors 4-9

  12. Systems - AHU • AHU 4 – Constant Speed • Serves North East Tower zones 4-9

  13. Findings • Ventilation Reduction • IGV Removal • VFD Retrofit • Scheduling • Economizers • Control Strategy Changes • Curtailment Week • Studio Lighting

  14. Curtailment Week • Thursday aggressive

  15. Curtailment Week • Rough Savings Estimates – Extrapolated Annually

  16. IGV Removal & VFD Retrofit • AHU-1 has both IGV and VFD on both supply fans and Exhaust • Remove IGV, Reduce VFD speed to achieve same flow using less energy. • Further reduce flow to ventilation requirement

  17. Scheduling • 6am to Mid-night is excessive for HVAC • EF 65, EF66, EF71, SF47 (broken VFD) run 24/7 • EF65 and EF65 exhaust Sawdust and Foundry, respectively. May have to add control linked to occupancy and equipment.

  18. Economizers • Economizers throughout the building are either partially or fully non-operational • These are simple mechanical fixes

  19. Control Strategy • Wurster is an efficiently designed building with a huge thermal mass, window shading, etc. • Currently the VFD on AHU ramp up with OA temp • Change control to reduce speed with increasing OAT.

  20. Meter 309 • What is going on here?

  21. Questions? • Discussion

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