Sector: Energy/Utilities
Siemens Canada
Algonquin College Trigeneration Plant
HH Angus was retained to design a trigeneration plant for Ottawa’s Algonquin College. Our scope included review of Siemens’ PSUI application to IESO, and assisting with their application. Because the existing central utility plant (CUP) was not large enough to accommodate new plant systems, our team developed a pre-engineered building to be built adjacent to the existing CUP.
As Prime Consultant, HH Angus retained Milman and Associates to undertake the required structural engineering, including a roof design to accommodate the cooling towers, rad cooler and transformer. An additional mezzanine was added to house auxiliary equipment.
In order to maximize the usable heat during summer months, a 350 ton absorption chiller, using double effect flue gas and hot water, was detailed. The 2 MW reciprocating trigeneration plant features selective catalytic reduction units and a heat recovery boiler.
Some project challenges included:
- Integrating and commissioning a trigeneration system into an operating facility
- Noise constraints due to proximity of CUP to College operations
- Space constraints due to pre-engineered building
- Footprint was maxed out based on site restrictions; HH Angus had to take into account future co-gen, chiller and ancillaries
- Ongoing upgrades in CUP heating and cooling, which HH Angus coordinated with another consultant
- Operating flexibility required for both parallel and island operation
- Solutions included: designed mezzanines in the existing CUP to house equipment and accommodate new, pre-engineered building for the second cogen and chiller; and rigorous scheduling coordination with Utility and College operations staff
SERVICES
Prime Consultant | Mechanical Engineering | Electrical Engineering
PROJECT FEATURES
Status: Completed 2017
LOCATION
Ottawa, Ontario
KEY SCOPE ELEMENTS
Review of PSUI application to IESO | 350-ton absorption chiller | 2 MW reciprocating trigen plant with selective catalytic reduction units & heat recovery boiler
Minimizing Disruption
All new equipment was connected to existing systems, with electrical connections restricted to well-planned shutdowns, resulting in minimal disruption to the ongoing operations of the campus.
Queen’s University
15 MW Cogeneration Facility
Acting as the Owner’s Engineer and Project Manager for Queen’s University, our involvement included: cogeneration plant design outline, equipment performance criteria, economic analysis review, the creation of project specific EPC&M contract documents, liquidated damages and insurance requirements, administration of contract documents, and life cycle analysis of tendered submissions.
The project-specific EPC&M contract included the Expression of Interest process, preparation of request for proposals (RFP) for engineering, as well as procure, construct and maintain contacts.
We also provided design review, schedule and cost management, scope control, contract administration, inspection services, commissioning assistance, and management and contract close out.
HH Angus was also retained for utility interface items, including design of the 44kV grounding transformer, transfer protection trip system and the natural gas letdown station.
SERVICES
Mechanical Engineering | Electrical Engineering
PROJECT FEATURES
Status: Completed 2007
LOCATION
Kingston, Ontario
KEY SCOPE ELEMENTS
Plant design outline | Economic analysis review | Project specific contract documents | Contract documents administration | Life cycle analysis | Design review | Design of 44kV grounding transformer
Enwave Energy Corporation
District Energy System Cogeneration Plant
District energy is a key component of Toronto’s climate action plan, to reduce emissions from buildings and help the City reach its greenhouse gas (GHG) reduction target of 80% by 2050. Buildings currently generate about half of the GHG emissions in Toronto.
Enwave is the largest District Energy Systems in North America. The system has enough power to supply over 180 office buildings.
This project started in 1962 with an original feasibility study and culminated in the design and construction of a central plant and distribution system with an installed capacity of 800,000 lbs. of steam per hour.
The deep lake cooling system was added later, and makes use of the 40°F/4°C water in Lake Ontario. It has a total capacity of 75,000 tons of refrigeration, which is sufficient to air condition 3.2 million m2 / ~34 million ft2 offices.
Clients with whom we have worked on the Enwave District Energy System include:
- Hudson Bay Company
- Bank of Nova Scotia
- Cadillac Fairview Toronto Dominion Tower Plaza
- Royal Bank Plaza
- Mt. Sinai Hospital
- Toronto General Hospital
- Women’s College Hospital
- The Hospital for Sick Children
- Li Ka Shing Knowledge Institute
- St. Michael’s Hospital
SERVICES
Prime Consultans | Project Mangeres | Electrical Engineers | Mechanical Engineers
PROJECT FEATURES
Status: Complete 2019
LOCATION
Toronto, Ontario
KEY SCOPE ELEMENTS
Provided technical advisory for heating and colling systems | Introduced over 5 miles of piping for high-pressure steam district heating | The deep lake cooling system makes use of 40°F/4°C water in Lake Ontario
Supplying miles of steam
The system supplies high-pressure steam for district heating via an underground distribution system of over five miles of piping in downtown Toronto.
Trusted advisor
HH Angus has served as a technical advisor to Enwave over many years, consulting on various engineering aspects of the heating and cooling systems.
Ontario University – Confidential
BESS & Microgrid System
The battery energy storage system facility reduces electrical demand for a Class A electricity facility operating during anticipated Global Adjustment hours.
Johnson Controls, the turnkey EPC and facility energy service company, engaged HH Angus to engineer a 2 MWe (4 MWh) behind-the-meter battery energy storage system (BESS).
The installation is part of a microgrid design that incorporates rooftop solar panels for six buildings (~500kWe), a 2 MWe (4 MWh) BESS, and a 2 MWe natural gas engine-generator peaker. The goal of the installation is to reduce Global Adjustment charges. It also supports much of the facility in the event of a power failure on the grid.
The solar panels and BESS were installed during spring and summer of 2018, and the engine-generator peaker plant has been submitted for a building permit.
SERVICES
Prime Consultant | Electrical Engineering
PROJECT FEATURES
Status: Completed 2021
LOCATION
Ontario
KEY SCOPE ELEMENTS
Engineered 2 MWe (4MWh) behind-the-meter battery energy storage | Microgrid design including solar, BESS, NG engine- generator peaking plant for six buildings
Energy innovation funding
The project was predicated on receiving Government of Canada Strategic Innovation Fund support for innovative energy projects.
Canadian Food Inspection Agency
Electrical Upgrade
HH Angus was engaged to upgrade the electrical distribution at the Canadian Food Inspection Agency, a regulatory body inspecting food, animals, and plants to protect the health and well-being of Canada’s people, environment and economy.
Our initial task on this project was to investigate existing major electrical systems and provide a concept design to replace and upgrade the existing equipment, which had reached end-of-life. Prior to implementation, we developed detailed phasing sequences to minimize the impact of power outages on the client’s operations.
Key design elements included replacing equipment with up-to-date technology, increasing capacity to ensure long service life, and meeting anticipated building usage. We also added power factor correction to reduce electricity costs for anticipated future rate structures. The new design provided flexibility for power distribution and technology. The client’s expectation was the replacement of main electrical equipment should carry the building reliably for at least 25 years.
HH Angus’ scope of work included design engineering services for replacement of 2 main 13.8kV underground service feeds – two 2000kVA dry transformers, two 600V switchboards feeding the building services, 600v switchboards that supply another 15 various 112.5KVA/150 KVA/225KVA-rated 600/208-120 dry transformers, 208/120V CDP distribution panels, MV/LV power cables, power factor capacitors and some transfer switches. In addition, associated equipment auxiliaries were replaced or upgraded. We also managed coordination, testing and commissioning of the replacement equipment.
SERVICES
Prime Consultant | Joint Venture | Electrical Engineering
PROJECT FEATURES
Status: Completed 2017
KEY SCOPE ELEMENTS
Review and upgrade of existing end-of-life equipment | Developed detailed phasing sequence to minimize the impact of power outages | Power correction factor added to reduce future electrical costs | Replacement of two 13.8 service feeds & transformation