1. Steam to Hot Water Conversion
The University of British Columbia
Vancouver, B.C.

2. The University of British Columbia
UBC Stats
12 million sq.ft. of institutional buildings
3 million sq.ft. residential
Day time pop. ~ 65,000
~ 30% growth over the next 15 to 20 years
UBC Stats
Steam
785,000,000lbs/year
1.1 million GJ/year NG
78% of GHG emissions
Electrical
309 GWh/year
49 MWe peak load
8% of GHG emissions

3. Steam to Hot Water Project Overview
5 year, 9 phase, $88 million project to convert the campus from steam to a hot water
11 kilometers of pre-insulated direct buried piping
115 building conversions
60 MegaWatt Natural Gas fired Campus Energy Center
12 buildings w/ steam process load requirements

4. History of District Energy at UBC
UBC Powerhouse circa 1925
3rd permanent building built on campus

5. Original 1920’s Coal Fired Boilers
3 original Boilers
Boiler 1&3 replaced in the 1950’s
All 3 converted to Natural Gas in 1960’s
Boiler 3 decommissioned in the 70’s
Boiler #1 & 2 still working today

6. 1960’s Campus Growth 1969 Boiler added #5 – 150,000 LBS/hr
1965 Boiler #2 Replaced -100,000 LBS/hr
1961 Boiler #4 added – 100,000 LBS/hr

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2002 Ecotrek Project
$30m Largest energy and water retrofit project on a Canadian campus
Major focus on steam system improvements
Allowed UBC to meet it’s Kyoto Protocol
2007 Comprehensive campus GHG inventory
Reduced intensity by 23% and saved over 150,000 GJ/yr of
Natural Gas
Major overhaul of Steam systems including
Boiler Economizers on #2,4 & 5
Steam and condensate system repairs
Upgraded the boiler management system
Improved buildings HVAC controls and schedules
Saved
150,000 GJ of natural gas/yr
20 GWh/yr Electricity

8. 2010 UBC GHG Reduction Targets
UBC adopted its Climate Action Plan in 2010, committing the
university to aggressive greenhouse gas (GHG) reduction targets of:
33% below 2007 levels by 2015
67% below 2007 levels by 2020
100% below 2007 levels by 2050

9. Achieving GHG Reduction TARGETS
Detailed Campus wide feasibility study recommends a mix of demand side and supply side options including:
1. Steam to hot water conversion of district heating system
(22% GHG reduction)
2. Bioenergy Research and Demonstration Facility
(12% GHG Reduction)
3. Continuous optimization of buildings
(3-5% GHG Reduction)

10. UBC STHW Project

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Rationale for STHW
Aging infrastructure – boilers, piping, heat exchangers and plant
Saves $5.6 million per annum in regulatory, commodity, carbon, capital, operational & maintenance costs
Reduces Campus Greenhouse Gas emissions by 22%
Increased energy supply options
Risk mitigation strategy
6th October 2014
8th October 2014
Average 30 year operating costs excluding loans estimated at 15.4 Million for hot water Vs. 21 Million for steam = 26% savings

12. Phase 1 Pilot Project Phase 1 Summary
1,100 trench meters of piping laid
13 buildings converted
Successful repurposing of existing oversized heat exchangers
Connect to future waste heat from BRDF
Phases 1 completed on budget and on time
Confirmed Phase 1 energy savings of 12,000 GJ’s NG and 600 tonnes of CO2 emissions

13. Phases 1 Lessons learned
Phased implementation verified costs estimates and delivered energy savings
Existing steam piping was found to be very poorly insulated
Elimination of 80+% of existing boiler pressure vessels (BPV) and steam regulated equipment.
Reuse of existing steam HEX’s are a viable option for initiating a DE project, before the new primary heat source is constructed.
USB Mech Room

14. Phase 2-3 Summary 3,600 trench meters of DPS laid 5 buildings added
Coordination with UBC Public Realm
500m of steam lines decommissioned
Confirmed Phase 2 energy savings of 3,000 GJ’s NG and 150 tonnes of CO2 emissions

15. Temporary Energy Center (TEC): Early energization project
Steam Powerhouse
TEC Summary
Allows for ongoing building commissioning prior to CEC construction
Likely 45+ buildings will be added in advance of CEC
Expected additional energy savings of 125,000 GJ’s NG and 6,250 tonnes of CO2 emissions for 2014/15
Temporary Energy Center
Main UBC Steam feeder line
New DE feeder pipe line summer 2013
Western Steam feeder line

16. Phase 4 Campus Energy Centre Expected Completion September 2015
3 x 15 MW Natural gas/#2 diesel boilers
1 MW condensing economizer
Designed for future expansion, and
Future integration with other clean energy technologies (cogeneration).

17. Energy Centre’s 60 MW Hot water Campus Energy centre
(Under construction)
16 MW Temporary
Steam to hot water
Station complete
(In service)
6MW Biomass
2 MW Cogen (HR)
(In service)

18. Feb 2015 Building Conversions Energy Transfer Stations (ETS)
35 Complete under construction

19. Expected Nov/Dec 2015 All Planned UBC Buildings Converted

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Steam Process Loads
12 buildings with sterilization requirements (Autoclaves, cage washers)
6 buildings require steam for humidification Most researchers already had clean steam generators
Absorption chillers (3) required replacement
Kitchens – Dishwashers (2) and steam kettles (3)
Sterilization (Autoclaves, cage washers)
12 buildings found to require steam for process loads
Electric steam generators used for isolated loads <100 KW’s
Gas steam boilers required for 2 buildings with significant steam loads
Humidification – Generally not required in Vancouver
6 Buildings found to required steam for humidification
Museums, Rare books, animal care
Note: Clean steam generators already used by most researchers
Absorption chillers
3 chillers required replacement
Kitchens – Dishwashers and steam kettles
2 aging dishwashers replaced
3 Steam kettles

21. LSC and Pharmacy Process Steam Microgrid, Proposed
HP Steam Header
LP Header
Building ~6MWt/hr
Process peak 4,000lb/hr
ADES

22. HINDSIGHT 20/20 Earlier assessment of orphan steam requirements.
Work year round (first three years was summer only)
Improved communications for campus stakeholders on disruptions
Regular communication for project team crucial
The temporary energy centre was essential (would have done it earlier)

23. Conclusions to Date
Project is currently 90% tendered, on schedule and on budget
Phased implementation:
allowed for lessons learned in earlier phases to be incorporated into future phases
verified costs estimates
delivered energy and cost savings from phase 1 onwards
confirmed original business case assumptions e.g. existing steam piping was found to be very poorly insulated
Elimination of 80+% of existing boiler pressure vessels (BPV) and steam regulated equipment within converted buildings.
On target for 5.5 km’s of steam line to be decommissioned by end 2014
Use of Existing steam HEX’s and a TEC, allows for the early energization of DPS & ~ 60% building conversions, while implementing the DE project and before the new Campus Energy Center is built & commissioned.
STHW on target to achieve a minimum 22% GHG reduction as expected by end 2015

24. Title of Presentation | Qualifier Text | Page
Thank you or 24