Centre hospitalier de l'Université de Montréal 

Temporary Energy Centre

The CHUM temporary energy centre was built to supply Saint-Luc Hospital with steam, cooling, heating and emergency power services during the demolition of the existing energy centre and the construction of the new CHUM hospital and its energy centre. The temporary energy centre operated until commissioning of the new permanent energy centre was completed.

HH Angus was retained to study the equipment and systems required for this installation, and to prepare the phasing plan. We were also responsible for development of the conceptual design and the detailed design, and for engineering services over the course of construction and commissioning of the provisional energy centre.

This project resulted in a very complex power plant constructed in a constrained space on top of the loading dock building. The six spiral tube boilers supplied 860 kPa (125 psig) of steam to each mechanical room serving the existing facilities at Saint-Luc Hospital, the CHUM Research Centre, the Édouard Asselin and André Viallet Pavilions. As well, provision was made for the construction activities for the new facility. The electrical supply was upgraded from 12.5kV to 25kV, with transformers distributed throughout the site.

The steam piping to each building had to be routed so as not to interfere with construction of the massive P3 CHUM mega-hospital. Provisions for future connections were made to reduce interruptions of the steam supply to the CHUM Research Centre.

Working in collaboration with the Constructor, the general contractor and the subcontractors, we were able to apply innovative design approaches to reduce the cost of the energy centre. This was achieved while maintaining the facility’s established life cycle parameters, and without compromising technical or operational quality.

A very important aspect of our work was ensuring that the connection of the new temporary energy centre and the disconnection and the decommissioning of the existing energy centre would have no impact on the day-to-day operations of the existing health care facility.

SERVICES
Mechanical Engineering | Electrical Engineering


PROJECT FEATURES
Status: Completed 2012 | Disconnection and decommissioning of existing energy centre was achieved with no impact on day to day operations of existing hospital | Innovative design approaches resulted in cost reductions for energy centre


LOCATION 
Montréal, Québec


KEY SCOPE ELEMENTS
P3 | Steam, cooling, heating and emergency power services | A very complex power plant in a constrained space | Routing of steam piping designed to avoid interference with construction of P3 mega hospital  


Exterior of Centre hospitalier de l'Université de Montréal
Interior of the energy centre Centre hospitalier de l'Université de Montréal

CREIT 

Bloor-Dundas District Energy Feasibility Study

HH Angus was engaged to conduct a feasibility study for a Low Carbon District Energy Plant serving a new, three million square foot mixed use residential and commercial development along Bloor Street in Toronto.

The full development is being implemented in several stages over ten years. HH Angus provided Prime Consultant and Mechanical and Electrical Engineering services, and developed a conceptual framework for the study.

The study considered a combination of traditional and renewable energy sources to provide heating and cooling, reviewing a range of options that included the following:

  • Condensing hot water boilers, efficiency up to 90-95%
  • Centrifugal water-cooled magnetic bearing chillers
  • Water source heat pumps (heat recovery chillers) to provide simultaneous cooling and heating
  • Air source heat pumps to provide simultaneous cooling and heating
  • Ground source heat pump system
  • Ambient loop system
  • Sewer heat recovery system
  • Combined Heat & Power (CHP) system to generate power using a gas-fired generator and to provide heat using waste engine heat, with overall generator efficiency up to 80%. CHP can be used as backup power source and to reduce energy cost during periods of peak cooling and electrical demand.

HH Angus conducted calculations of estimated heating, cooling and electrical loads, plus energy consumption for future development, establishing options for the arrangement of the District Energy plant, including provision for expansion to provide heating and cooling to future developments in the neighbourhood.

Our study scope also included tentative District Energy plant layout and area requirements, capital budget, operating costs and NPV estimates for each option, as well as analysis of results and corresponding recommendations.

SERVICES
Prime Consultant | Mechanical Engineering | Electrical Engineering


PROJECT FEATURES
Size: Low carbon district energy study | Due diligence engineering report | Status: Completed 2018


LOCATION 
Toronto, Ontario


KEY SCOPE ELEMENTS
Assessment of district energy plant designs to serve 3 million ft2 of mixed use development |
Calculation of estimated heating, cooling and electrical loads and energy consumption for future development | Analysis of results and corresponding recommendations for optimal design | Consideration of traditional and renewable energy sources


Mirvish Village

Central Utility Plant

Mirvish Village is reimagining a 4.5 acre section of Toronto's Bloor/Bathurst neighbourhood, including the former site of the the iconic Honest Ed's store, a beloved Toronto landmark. Featuring four high-rise, one low-rise and twelve heritage buildings, the mixed-use site will be home to more than 2000 residents.

HH Angus is working with Creative Energy Developments to provide mechanical and electrical engineering services for the Mirvish Village central utility plant, which includes a combined heat and power plant (CHP), a boiler plant, and a cooling plant. The CHP plant will include an 800 KW generator set with auxiliaries and heat recovery system. The generator is expected to run continuously to provide power to the complex.

Heat recovery consists of two systems: High Temperature to provide heat to buildings, and Low Temperature to provide additional heating for a winter snow melting system and swimming pool heating.  The boiler plant will include installation of four condensing hot water boilers, with the option for two additional boilers in future. All boilers will have an output of 3.1 MW.

The cooling plant will include installation of two water-cooled chillers, operating at 1200 tons each. One chiller is a magnetic bearing chiller with variable frequency drive (VFD), and the other is a centrifugal chiller with VFD. As well, two cooling towers at 1200 tons each will be installed on the roof. 

Central distribution piping from the plant will provide hot water and chilled water to multiple energy transfer stations, with heating, cooling, and domestic hot water heat exchanges for each building within the complex.

The photo-voltaic solar system will have a capacity of 103KW, 480V. HH Angus is providing direction for locating the installation, coordinating with the PV supplier for modeling the panel direction and angle for optimal PV output, developing technical connection requirements with Toronto Hydro, and identifying requirements for parallel generation with the central utility plant.

We also assisted the client with a successful incentive funding application. Ultimately, the incentive was not applicable due to schedule changes, which meant the project could not meet the incentive deadline.

Renderings courtesy of Westbank Corp.

SERVICES
Mechanical Engineering | Electrical Engineering


PROJECT FEATURES
Status: Completion 2022


LOCATION 
Toronto, Ontario


KEY SCOPE ELEMENTS
Combined Heat and Power Plant | Boiler Plant  | Cooling Plant | High Temperature and Low Temperature Heat Recovery Systems | Photo Voltaic System


Metering Strategies

Our scope also included developing thermal and electrical metering strategies within a microgrid system, design of operation for gas-fired emergency generators in electrical peak shaving mode, and the design of a roof mounted PV solar system.

Sustainable design

Mirvish Village is being designed to meet LEED® Platinum ND standards, and will feature sustainable transportation options.

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