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Energy and Sustainability at Cal Poly
Cal Poly State University, San Luis Obispo
Presented to the Cal Poly Power and Energy Conference
May 9th, 2014
Dennis K. Elliot, PE, CEM
Assistant Director, Energy, Utilities and Sustainability
Facility Services
Power and Energy
Cal Poly at a glance:
Founded 1901
Over 300 Buildings
6M GSF
19,700 Students
7,200 Residents
2,200 Faculty & Staff
10,000 acres
$9.4M Utility Budget
Power and Energy
Cal Poly Utility Infrastructure
Central Plant and Utilidor 3 Natural Gas Boilers – 60 MMBtuh
5 Electric Chillers – 2550 Tons
Thermal Energy Storage Tank – 1.6 Mgal
TES Shifts 1 MW load to off peak
Siemens Building Automation System
70 kV Mustang Substation 20 MW Capacity – 2 Transformers
12 kV and 4160 distribution
Rockwell SCADA System
Cogeneration – Combined Heat and Power 500 kW system at Poly Canyon Village
350 kW system at Sierra Madre (being replaced)
80% net thermal efficiency
Engineering West Solar PV – 135 kW
3 Potable Water Reservoirs – 1.5 Mgal
Power and Energy
Cal Poly Energy Use
45,000,000 kWh Electricity
2,300,000 therms Natural Gas
Tracked as Btu/GSF
21% Reduction since 2000 – accomplished by: HVAC Retrofits
Lighting Retrofits
MBCx
Efficient New Buildings
Educational Outreach
$40M invested since 1997
$4M project pending $3M CEC Loan
$1M PG&E On-Bill Finance
Power and Energy
Cal Poly Water Use – Energy/Water Nexus
Pumping/treatment of water consumes 20% of all energy in California
Power Generation is second largest water user in US
Cal Poly Source - Whalerock Reservoir, Wells and Springs
Usage 1,200 acre-feet/year - $128K per year for pumping to campus POC
Potable Water – Buildings and Landscape
Usage flat since 2003, despite 60% GSF increase, 100% housing increase
Ag Water – Sports Complex and Ag Irrigation
Power and Energy
Cal Poly Solid Waste
Campus generates 7,400 tons per year
72% diverted from landfill in 2013 – largest contributors: Construction waste diversion – can easily exceed 90%
Composting of food waste and manure in Ag Units – 3,800 tons/year
Zero Waste Open House, SOAR, WOW, and Campus Catering
Consumer recycling average ~ 23%
Power and Energy
Energy Efficiency
Heating, Ventilation, and Air Conditioning:
Convert constant volume air/water systems to variable flow using variable
frequency drives and NEMA Premium Efficiency Motors Reduces fan/pump energy: P = flow^3
Only deliver heating/cooling needed
Outside air economizers
Convert pneumatic controls to DDC Separate heating/cooling setpoints, night setback
Remote monitoring and diagnostics of all zones
Reduces drift and recalibration, easy to change programming
MBCx - Monitoring Based Commissioning
Optimize distribution system delta T
Power and Energy
Energy Efficiency
Lighting Systems - Indoor
Low wattage fluorescent, 4100K color temperature
Occupancy controls, daylight harvesting/dimming
Task lighting
Eliminate hi-bay HID
Lighting Systems - Outdoor
HID to LED with bi-level or dimming
Power and Energy
LED
141 watts
8400 lumens
CRI 80
HPS
300 watts
21000 lumens
CRI 22
Demand Response
Up to 40% of summer electrical charges are for peak demand
Ca ISO and PG&E call for DR to: Protect the grid on days of high temperature/high use
Avoid operation of peaker plants with high emission rates
Delay the need for construction of new generating plants
Automated load shed of non-critical HVAC through EMS
Request for voluntary conservation by building occupants via email
Up to $60K in incentives received per year
Power and Energy
Green Buildings
LEED Certification CSU mandates design to LEED Silver equivalency
State funds may not be used for LEED Certification
60% of points are focused on Energy, Water, and IAQ
30% of Cal Poly square footage is LEED Certified: Faculty Offices East – LEED EBOM Silver – first in CSU
Poly Canyon Village – LEED NC Gold
Recreation Center – LEED NC Gold
Center for Science – LEED NC Gold
LEED Buildings are High Performance Poly Canyon Village exceeds ASHRAE 90.1 by 51%
Rec Center exceeds California Title 24 by 25%
Center for Science exceeds ASHRAE 90.1 by 30%
Power and Energy
Innovative Building Energy Features
Poly Canyon Village
Hydronic Ceiling Radiant Heating Panels
Variable Volume Refrigerant Flow
Multi Split AC Units
Recreation Center
Indirect/Direct Evaporative Cooling
Heat pipe heat recovery
Center for Science
Active Chilled Beams
Aircuity Lab Controls
Variable Flow Fume Hoods
Displacement/Demand Ventilation
Ceiling Radiant Heating and Cooling Panels
Power and Energy
Educational Outreach
PowerSave Campus Program
Dorm Energy Competition
Green Workplace Certification
Energy/Water Retrofits
Green Job Fair
CFS Fume Hood Competition
LED Streetlight Retrofit
Energy Dashboard
Mascots – Mr. Eco and Poly the Polar Bear
Power and Energy
CENG Sustainable Energy and Infrastructure Initiative
Identified as part of CENG 13/14 Strategic Framework
Coordinators - Dennis Elliot (Facilities) and Dale Dolan (EE)
Involves faculty, staff, students, administrators, and corporate partners
Funded by CENG Dean’s office and VP of AFD
Won Sustainability Best Practice Award for Innovation – CHESC 2014
Visioning process to define future of SEI in regards to: Curriculum, Research, and Student Projects
Campus as a Living Laboratory
Develop on-site renewable energy generation projects and integrate with the University’s
academic mission
Identify advancement opportunities and public-private partnerships
Visioning workshop: Saturday, May 17 9:00 am to 1:30 pm
Chumash Auditorium – left wing
Please email if you would like to participate
Power and Energy
Contact info and references:
Dennis Elliot – Assistant Director, Energy, Utilities and Sustainability - [email protected]
Cal Poly University Sustainability Website – www.sustainability.calpoly.edu
Biennial Sustainability Progress Report – link at bottom of Sustainability Website main page
Best Practice Awards and Building/Project Case Studies - http://afd.calpoly.edu/sustainability/awards.asp
Cal Poly PowerSave Campus – [email protected]
Cal Poly PowerSave Campus Website – www.powersavecampus.calpoly.edu
Cal Poly PowerSave Campus Facebook Page - www.facebook.com/CalPolyGreenCampus
Polly the Polar Bear Facebook Page - www.facebook.com/PollyThePolarBear
Mr. Eco Website – www.mrecomusic.com
Power and Energy