clinical teaching facility: the prescription for energy savings
DESCRIPTION
Clinical Teaching Facility: The Prescription for Energy Savings. Tim Rielly , Facilities Manager Hillcrest & Tavis Werts PE, EnerNOC Project Manager UC San Diego. UCOP GOAL: Climate Neutrality by 2025. UC San Diego Investment in Energy Efficiency. - PowerPoint PPT PresentationTRANSCRIPT
Clinical Teaching Facility:
The Prescription for Energy Savings
Tim Rielly, Facilities Manager Hillcrest &Tavis Werts PE, EnerNOC Project Manager
UC San Diego
2004
2005
2006
2007
2008
2009
2010
2011
2012
-
2,000,000
4,000,000
6,000,000
8,000,000
10,000,000
12,000,000
14,000,000
16,000,000
18,000,000
-
0.0020
0.0040
0.0060
0.0080
0.0100
0.0120
0.0140
0.0160
0.0180 UC San Diego Greenhouse Gas Index
Total MGSF GHG tonnes / GSF-YR
Main
tain
ed
Gro
ss S
q F
eet T
on
nes/G
ross S
q F
t-Year
UCOP GOAL:Climate
Neutrality by 2025
UC San DiegoInvestment in Energy Efficiency
Funded by utility incentives and a low interest revenue bond
Program will yield $8.9M in avoided annual energy costs from 48M kw-hr/yr reduction
In seven years, UCSD will complete $85.5M of projects, with $13.3M in incentives
2010
2011
2012
2013
(pro
ject
ed)
2014
(pro
ject
ed)
Tota
l$0
$1,000,000
$2,000,000
$3,000,000
$4,000,000
$5,000,000
$6,000,000
$7,000,000
Annual 15-Year Debt Service
Annual Savings
Energy Efficiency Program Breakdown
Lab HVAC
Retrofits
42%
Non-Lab HVAC Retrofits
8%
MBCx25%
Data Center
3%
Lighting8%
Plug Loads &
Other3% Central Plant
Retrofits12%
Lab HVAC
Retrofits
60%Non-Lab
HVAC Retrofit
s5%
MBCx18%
Data Center
1%
Light-ing7%
Plug Loads
& Other
2%
Central Plant Retrofits
6%
by Savings by Cost
La Jolla Campus
Hillcrest Campus
UC San Diego’s Hillcrest Campus
Clinical Teaching Facility
• Built in 1978• 3 Buildings - 131,000 GSF• Medical Research Labs and Office Space• 14 Air Handlers• Annual Energy Bill: $670,000
Metering
Electricity Chilled Water Hot Water
Eight different energy feeds
required monitoring for M&V Option C:
Whole Building Analysis!
Existing HVAC Infrastructure
• 2 Air Handlers per building plus 2 dedicated vivarium units•1 100% outside air and 1 economizer unit per building
Implemented Improvements
•Pressure-Independent Chilled Water Valves•SAT Reset Sequence• Programming to Prevent
Simultaneous Heating and Cooling•Heating Hot Water Reset• Replace Leaking Reheat Valves• Replace and Optimize Economizers
CTF’s New Baseline
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
0
50,000
100,000
150,000
200,000
250,000
300,000
350,000
Monthly Energy Consumption for the Clinical Teaching Facility
Pre-Implementation Hot Water (MMBtu) Post-Implementation Hot Water (MMBtu)Pre-Implementation Chilled Water (MMBtu) Post-Implementation Chilled Water (MMBtu)Pre-Implementation Electricity (kWh) Post-Implementation Electricity (kWh)
MM
Btu
kWh
Energy Savings
Annual Energy Usage
Category
Pre-Baseline Usage
Post-Baseline Usage
Energy Savings Cost Savings
Electricity (kWh/yr) 3,514,130 3,342,003 172,127 $13,770
Chilled water (MMBtu/yr) 23,746 12,704 11,042 $91,980
Hot water (MMBtu/yr) 20,254 7,581 12,673 $115,324
Best Practices
•Meter Installation•Upgraded AHUs to Modern Controls•MBCx provider worked closely with CUP staff
• Buy-in from Technicians prevents overriding setpoints• Plant staff is taking the training provided and
lessons learned to repeat the process at the hospital
Lessons Learned
• Control Vendor Contracts• Operator Acceptance of New Sequences• Economizer design• Early leak-by detection
Ongoing Improvements
•VAV Retrofit• Continuous Commissioning• Reduction of Minimum Room Air Exchange Rates, with Air Content Monitoring• Exhaust Fan Energy Optimization Through Air Content Monitoring and/or Wind Speed Monitoring• Optimize outside air requirements
