ENGINEERING 100W Energy Conservation at SJSU

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ENGINEERING 100WEnergy Conservation at SJSU

• 02/15/08
• Jared Isaacson
• Energy Analyst
• FDO/EUE

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Content

• SJSU Energy Use
• UC/CSU/IOU Partnership
• Monitoring Based Commissioning (MBCx)
• Background
• MBCx completed at SJSU
• Current Energy Program
• Labs21/Green Campus programs

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Energy Delivered to Campus by Central Plant in
2007
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Engineering Building Energy Use
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Student Union Energy Use

• Example of metered data
• Chart
• EXCEL file

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UC/CSU/IOU
Energy efficiency measures implemented by the UC
and the CSU systems, in collaboration with CAs 4
IOUs PGE, SCE, SoCal Gas, SDGE 04/05
savings 32 million kilowatt hours 1.5
million therms of gas This is the most
successful energy efficiency program serving the
higher education sector. In fact, the program was
designed and implemented to not only achieve
sustained energy savings, but also influence
energy policy in education institutions
nationwide, said Len Pettis, CSUs Chief of
Plant, Energy and Utilities. Funded by CA
utility customers and administered by CAs IOUs
under the auspices of the CPUC. Ex Gas PPP
surcharge on PGE bill

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MBCx

• Monitoring Based Commissioning (MBCx)
• Element of UC/CSU/IOU Program
• Commissioning Process
• Ensure optimal building performance
• Reduce Energy Use
• Improve Indoor Air Quality
• Improve occupant comfort productivity

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MBCx Process

• Combines expertise of Facilities FDO
  management staff, Utility and Contractors
• Components
• Energy Information Systems/Building Diagnostics
• CEMCS/HVAC and Metering
• Facility Retro-Commissioning
• Commissioning of existing building for efficiency
• Continuous Commissioning
• M V, Training/Education lasting savings

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Completed SJSU MBCx
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SJSU Energy Program

• Engineering Building Improvements
• MBCx Potential Savings
• 12,111 therms of steam
• 930,170 kWh
• Valued at 161,786 Annually
• The Engineering Building is a four-story building
  situated in the North-East Quadrant of campus,
  fronting San Fernando Street. The 334,000 ft2
  facility was constructed in two phases, the
  initial phase (Engineering Phase 1) was
  constructed in 1962, and an expansion phase
  (Engineering Phase 2) was constructed in 1989.
  Phase 1 contains classrooms, lecture halls and
  civil engineering labs with wave tanks and
  materials testing areas. Phase 2 has classrooms
  and mechanical and electrical engineering labs
  including a large semi-conductor lab, and
  multiple, large computer labs on the 3rd floor,
  the building also has numerous computer rooms and
  process cooling equipment throughout. The
  building is provided with major facilities
  related to unknown lab use including (3) 100 HP
  air compressors dedicated to lab services, 12MVA
  of installed transformer capacity, a wet chemical
  exhaust scrubber serving a clean-lab with known
  general exhaust connections to the scrubber, a
  process cooling loop with a 250 ton crossflow
  cooling tower serving marginal lab process water
  in Phase 2.
• Building energy usage was developed as part of
  the several utility system master planning
  projects. The baseyear energy use of the building
  is fiscal year 05/06, and is 4,716,716 kWh/yr,
  1,016,240 Ton-Hr/yr, and 176,144 Therms/yr.
  Because of the incomplete information at this
  time it's not feasible to apply the Labs21
  Benchmark tool therefore, the early benchmark
  shall be the CalArch benchmarking tool which
  indicates the Energy Intensive Units (EIU) are
  138 kBtu/ft2-yr. The buildings EIU's as
  benchmarked against "Educational", and
  "Industrial Processing/Manufacturing" are 67,
  and 50 higher then the facilities registering
  with the database.

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Engineering MBCx

• VAV boxes
• Tune and calibrate
• Variable Air Volume
• Pumps are constant speed
• Propose installing VFD's
• Variable Frequency Drives adjustable speed for
  pumps electric motors

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ENG HVAC description

• Building is dual duct VAV with 300 mixing boxes
  and DDC thermostats and (3) 100 hp air
  compressors for lab air. Building has Process
  Cooling loop with BAC VNT 500 ton cooling tower
  running 24/7 without control. Building has 12 MVA
  of 4.16 and 12 KV transformers, all energized
  with no way to tie busses together and a maximum
  demand of 500 kW measured over the last 3 years.
  Building originally housed 2000 tons of chillers
  that have since been moved to central plant.
  Building has lighting controls that have been
  defeated due to occupant complaints of lamps
  being "out". MBCx activities will seek to tune
  and calibrate boxes and eliminate pneumatics
  where feasible. Building has process cooling
  towers with minimal lab usage. Pumps are constant
  speed, propose installing VFD's.

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Labs 21

• Goal development of sustainable, high
  performance, and low-energy laboratories
• Set measurable energy and environmental
  performance goals
• Benchmark the energy and environmental
  performance of your facility
• Share energy and environmental performance
  results
• Report project results