Post on 24-Oct-2021
Eco-School Business Development
October 7, 2016
Boston, MA
Northern Lights Solutions
Dmitri NaoumovProject Manager
Mackenzie de CarleLighting Retrofit Team Lead
Ernesto Diaz
Lozano Patino
Matheos TsiarasOutreach Team Lead
Arthur LeungEnergy Analysis Team Lead
Claire GaoTeam Lead
2
Agenda
• Client Introduction
• Facility Overview
• Energy Audit Results
• Lighting Retrofit
• Solar Photovoltaic System
• Project Financing and Schedule
• Project Outreach
• Acknowledgments3
Client Introduction
University of Toronto Schools• Located in Toronto, Ontario, Canada
• Opened in 1910 for grade 7-12 students
• Is the only merit-based university preparatory school in Canada associated with a university
• Offers specialized curriculum that encourages social responsibility
4
Facility Overview
• 3-storey structure with below-grade basement
• Majority of space dedicated to classrooms
• Brick façade; single-pane glass covers ~60% of exterior
First Floor Plan
5
Lighting49%AC and
Ventilation23%
Laboratory and PC
19%
Swimming Pool8%
Other1%
Energy Audit Results
Energy Audit Results• Major lighting fixtures include 2’ and
4’ T8 32W linear fluorescents in classrooms and hallways
• HVAC consists of individual A/C units and ceiling fans
• Science labs equipped with 9 fume hoods; computer labs equipped with 100 computers
• Water pumps and heaters for swimming pool in use 600hrs/month Electrical Energy
Consumption 6
Energy Efficiency Analysis
Proposed Improvements
Reduce current lighting consumption by upgrading to LED lighting
Optimize lighting system by installing occupancy sensors and daylighting controls
Install rooftop photovoltaic system for supplementary revenue and as an educational tool
7
Lighting Retrofit
• Two rooms under study
– Room 203: East-facing exterior
– Room 210: South-facing exterior
– Are representative of typical classrooms
– Have different lighting requirements
• Two options investigated per room
1. Replace types of lights used
2. Lighting control and room improvements8
Lighting Retrofit
Lighting Schematic
Room 203
• Existing Conditions
– 32 x 4’ T8 32W linear fluorescent
– Poor room light quality
(< 500 lux)
• Option 1– Replace with 32 x 4’ T8 24W Linear LED Ballast Bypass– Provide better lighting conditions– 615 kWh/yr Electricity Savings
9
Lighting Retrofit
Occupant Sensing Light Switch
10
Room 203
• Current Conditions
– Lights in use 12 hours/day (7AM – 7PM)
• Option 2
– Installation of occupant sensing light switches with manual override
– Decrease total usage of artificial lighting to 8 hours/day
Lighting Retrofit
Room 203 Financial Analysis
Upgrade to 24W LED Occupant Sensors
Electricity Savings (kWh/yr)
870 1160
Capital Cost (CAD) 1975 135
Annual Cost Savings (CAD/yr)
220 290
ROI (%) 6 2425
Payback (years) 9.1 0.5
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• Option 1– Replace with 32 x 4’ T8 18W Linear LED Ballast Bypass– Match current lighting conditions– 1075 kWh/yr Electricity Savings
Lighting Retrofit
Room 210
• Existing Conditions
– 32 x 4’ T8 32W linear fluorescent
– Recommend light levels met
Classroom Rendering
12
Room 210
• Current Conditions
• Blinds often closed to prevent glare on workspaces
• Option 2
• Install light shelves
• Reflects natural light further into the room
• Artificial light can be kept off for significant portions of the day
Lighting Retrofit
Light Shelves
13
Lighting Retrofit
Room 210 Financial Analysis
Upgrade to 18W LED Light Shelves
Electricity Savings (kWh/yr)
1525 580
Capital Cost (CAD) 1900 800
Annual Cost Savings (CAD/yr)
380 145
ROI (%) 95 175
Payback (years) 5 5.5
14
Solar Photovoltaic System
System Design
• Tilted section of roof on northwest corner of building ideal for location of solar PV array
• Two sets of 10 Canadian Solar CS6P-260P panels, connected in parallel, to match specified inverter
• Connected to industry grade meter, then to the grid
Location of Solar PV System
15
Solar Photovoltaic System
Shading Study
• Four nearby buildings considered as possible sources of shading
• Shading analysis run for noon on the Winter Solstice
Shading Analysis Diagram16
Solar Photovoltaic System
Shading Study
• Consideration of shading from nearby roof structure
Rooftop Solar Shading Study17
December March
SeptemberJune
Solar Photovoltaic System
Electrical Schematic
Solar PV System 3 Line Diagram18
Project Financing and Schedule
Project Schedule• Pre-construction and Design phases begin Spring 2017
• Construction activities start June 29, 2017, and end September 1, 2017
• Emphasis of no interference with regular school operations
19
Project Financing and Schedule
Cost Estimate for Selected Lighting Options
20
Category Cost Estimate
Design Costs (5%) $200
LED Installation(Rooms 203/210)
$3,872
Classroom Lighting Automation(Room 203)
$132
Additional Costs (11%) $440
Subtotal $4,644
Overhead and Profit (6%) $279
Project Total (CAD) $4,923
Project Total (USD) $3,855
Project Financing and Schedule
Grants and IncentivesName Incentive/Grant Comment
TD Friends of the Environment
$1,000 CAD Max $4,000 CAD
Toronto Hydro Retrofit Program
$235.09 CADLighting - $0.05/kWh
Automation - $0.10/kWh
IESO microFIT ProgramEnergy sold to system
operator from installedsystem
$0.207/kWh for installations in 2017
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Project Financing and Schedule
Project Financial Summary
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Rooms 203/210 Only
Whole Building, 18W LED and Lighting Automation
Project Cost (CAD) $4,923 $151,556
Incentives Available $1,221 $11,387
Net Project Cost (CAD) $3,702 $140,169
Annual Energy Savings(MWh)
3.26 135.78
Annual Bill Savings (CAD) $653 $27,156
Annual O&M (CAD) $20 $800
Simple Payback (years) 5.8 5.3
Net Present Value (6% discount)
$3,556 $162,138
Project Financing and Schedule
Project Cash Flow Plan• Cash flow for UTS is presented for the whole building lighting
retrofit
• $150,000 Bank Loan at 5.7% interest, paid back in 9 installments over 10 years
23-$100,000
$0
$100,000
$200,000
$300,000
$400,000
2017 2021 2025 2029 2033 2037
20
16
$ C
AD
Bill Savings
Loan Repayment
Cumulative Cash Flow
Project Outreach
Partnership with University of Toronto Schools• Several potential events for Fall 2016/Winter 2017 that focus
on student learning and engagement, including:
– Guest lectures on topics such as building envelope design and solar PV systems
– Workshops on the scientific research and investigation processes
– Site visits to University of Toronto cogeneration plant
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Project Outreach
Project Blog• Periodically updated to inform
subscribers of project progress
• Potential to leverage blog to share information on industry best practices and energy-reducing strategies
Example Project Blog Entry
25
Project Outreach
University of Toronto Sustainability Conference• Annual conference which attracts thousands of visitors
• Project team held a booth during the tradeshow, where attendees could learn about project activities
Project Team Members at Conference26
Project Outreach
Media Coverage• Daily Commercial News
• The Civilian, the University of Toronto Civil + Mineral Engineering alumni magazine
• The Cannon, University of Toronto Engineering’s newspaper
27
Project Outreach
2015 Green Energy Challenge• Client: Good Shepherd Ministries
• Project is proceeding to completion– Detailed design completed
– Materials purchased
– Contractors hired
28
• Scheduled completion: October/November 2016
Acknowledgments
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Thank you!
Questions?