Campus Summer Energy Study

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Campus Summer Energy Study

• Preliminary findings and recommendations

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Student Team

• Brianne Haner
• LaShonda Windham
• Ria Mehta
• Nickita Mehta
• Nicole Grabowski
• Emily Pochubay

Corrine Thomas Matt Schumann Brett Kersh Amalia
Villarruel Ryan OHagan
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Some Background

• We know
• Summer uses as much if not more energy per month
  than during the school year
• Electricity use drives power demand and
  greenhouse gas emissions
• Electricity demand is rising faster than steam
• We know a lot about power plant operations and
  usage per month for buildings as a whole
• but we dont know much about sub-building usage
  and demand behavior

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Trajectory
Stabilization target
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Summer Study

• Question 1
• What is the effect on decreased electrical energy
  demand by modification of the HVAC schedule?
• Question 2
• What is the effect on decreased electrical energy
  demand through modification of end-user behavior?

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Summer study sites

• Focus on 6 buildings
• Administration
• Food Science
• Food Safety and Toxicology
• Bessey
• Geography
• Wells
• Buildings selected based on type
  office/admin/academic laboratory classroom

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Experimental Design

• Measure two elements of energy usage
• HVAC operations
• Plug load from individual appliances,
  instruments, computers, lights, etc
• Measure during two, four week periods
• Baseline period business as usual, no
  conservation efforts in place
• Commitment period conservation measures put in
  place

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Measurements

• Inventory tabulation of all plug load items in
  all buildings
• Room by room inspection
• Make and model of all units thousands
• Produces estimate of plug load capacity
• Monitoring tabulation and observation of what is
  running in all buildings
• Room by room survey, one per week day time, once
  per 4 weeks night time
• Occupancy, large equipment, lights, computers
• Produces estimation of on-time

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Plug Load vs. HVAC

• Calculation aim
• Total Energy HVAC Plug Load
• Total Energy (HVACon-time) (PLon time)
• KWh (KWH hH) (KWP hP)
• For HVAC, central control
• Obtain back plate rating for VAC, Amps, Watts for
  equipment on central control
• Use run time numbers
• For HVAC, not central control
• Estimate run time
• For Plug Load
• Obtain power rating (actual or thru the web) for
  VAC, Amps, Watts from Inventory database
• Estimate on-time from Monitoring surveillance
  database

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Conservation Measures

• A stewardship outreach and education effort
• Provided a packet of savings behaviors and things
  that could be done
• Web site with Tips of the Month
• Communication with building teams

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Sneak preview of results
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Climate effects are minimal
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Some scenario peeks

• Lights in Administration
• Plug Load inventory 3076
• Plug Load monitoring 8 hours per day
• Lights watts on time usage
• 3076 32 watts 40 hr / week 3937 KWh
• Light usage 8.3 of total usage
• Lights off one hour each day
• 3076 32 watts 35 hr / week 3445 KWh
• This is a 3 reduction in building energy usage
• Change in technology 32 to 28 W lamps
• 3076 28 watts 40 hr /week 3445 KWh
• This is a 3 reduction in energy usage

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Recommendations

• Energy and GHG reductions will come as a series
  of wedges at all scales, power plant, building
  design, usage
• For the latter focus on
• Reducing HVAC usage (by one hour) 3
• Reducing lighting office and labs by one hour
  (3)
• Turn off computers at night
• Closing fume hoods and ovens in science buildings
• Improve the monitoring capabilities
• Installing protocols and certification program
  for units
• Building design and LEED certification for new
  buildings
• Use procurement process for energy data collection

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Next Steps

• Begin focus on meeting CCX targets
• Understand day-night base load components
• Understand effects of scheduling
• Begin tabulation of off sets

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