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MAXIMIZING DORM ENERGY SAVINGS WITH INTELLIGENT HVAC CONTROLS

MAXIMIZING DORM ENERGY SAVINGS WITH INTELLIGENT HVAC CONTROLS. Dianne Anderson, NYU Office of Sustainability. AASHE CONFERENCE, OCTOBER 11, 2011. Agenda. Challenges in Residence Halls About NYU Finding a Solution to these challenges The Solution Results Lessons Learned.

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MAXIMIZING DORM ENERGY SAVINGS WITH INTELLIGENT HVAC CONTROLS

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  1. MAXIMIZING DORM ENERGY SAVINGS WITH INTELLIGENT HVAC CONTROLS Dianne Anderson, NYU Office of Sustainability AASHE CONFERENCE, OCTOBER 11, 2011

  2. Agenda • Challenges in Residence Halls • About NYU • Finding a Solution to these challenges • The Solution • Results • Lessons Learned

  3. Challenges in Residence Halls Why Now? At Home: Space heating and Air condition = ~49% Continued rise in utility rates Technological improvements which make systems fit a Return on Investment (ROI) Proven technology to address challenges Green mind shift Source: US Energy Information Administration

  4. Challenges in Residence Halls • Students leave the room and do not shut off or adjust the setpoint • Manually monitoring dorm room temperature is impossible • Requires full participation of students, or… • Requires continual room checks and student disruption • While many students have an increasingly “GREEN” mindset, it doesn’t mean we can always count on them

  5. About NYU’s Residence Halls • Housing 12,500 students • Owned: 15 Buildings • Leased: 10 Buildings • Types of Heating/Cooling Units • PTAC (water & steam source) • Heat Pump • Fancoil • Building Management System • Yes and No

  6. About NYU’s Residence Halls • Wide Variety of types, sizes, voltages, and existing controls

  7. Looking for a Solution to Challenges • Project Goals • Reduce Wasted Heating and Cooling • Lower Utility expenses • Improved controls for students • Demand Curtailment capability • Ability to create campus wide set-point ranges • Key Requirements • Limit Student Impact • Utilize Campus network between buildings • Remote confirmation of thermostats • Maintainability • No Interference with Campus WIFI • ROI

  8. Occupancy Based HVAC Controls Solution to Challenge: Occupancy based HVAC Controls • Telkonet Smart Energy System Installations: Completed: 11 Residence Hall Buildings Totaling: 4,629 units

  9. Occupancy Based HVAC Controls What is a Smart System? • Utilizing Occupancy based controls to eliminate wasted heating and cooling runtimes in student rooms • Patented Recovery Time™ Technology

  10. Occupancy Based HVAC Controls • Installation: hardwired or wireless • Networking/Central Management: • Zigbee: Low Cost, mesh standard networking, simple installation • Additional uses: • Lighting control • Advanced scheduling • Winter freeze protections

  11. EcoSmartZigbee Network

  12. EcoSmartZigbee Network

  13. EcoSmartZigbee Network

  14. Results - Type of Savings • Controlling runtime when the room is Unoccupied • Decreasing runtime means less energy is consumed • Increases life of HVAC unit due to decreased use • Maximizes efficiency and savings • Imposing (optional) limits on the “allowable” maximum or minimum temperatures, if desired • Applicable to Occupied and/or Unoccupied states • Participation in Curtailment Events • Less maintenance • Comfort increased • Lowering Peak Demand (Potential)

  15. NYU Overall Project

  16. NYU Overall Project

  17. Lessons Learned • Thermostat Placement • Maintenance Staff training & involvement • Communication & Support • Residential Life Dept & Client Services Center • Student engagement

  18. Questions? Dianne Anderson New York University 212-992-8577 Dianne.Anderson@nyu.edu

  19. About NYU’s Residence Halls • Mercer –2 Pipe Fan Coil (single mode selection, auto switchover) • D’Agostino -2 Pipe Fan Coil (single mode selection, auto switchover) • 26th St. -Island Air, Steam Heat, Compressor Cooling • Alumni Hall – Renovated new Evergreen Packaged units (24v remote stat capable) • Third North– Renovated new Evergreen Packaged units (24v remote stat capable) • Founders Hall – New Build, Alerton Control module interfaced with dry contact for occupancy. • Palladium – Heat Pumps, Existing Alerton control interfaced into existing BMS reports. • Carlyle – Island Air and Adirondack units • Gramercy – McQuay units (24v remote stat existing)

  20. NYU Overall Project

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