Service: Mechanical Engineering
Seneca College of Applied Arts and Technology
Garriock Hall Mechanical Retrofit
Located on the King City campus, Garriock Hall renovations are part of Seneca’s on-going expansion. The retrofitted heating system provides improved comfort for the campus’ 5,200 students.
HH Angus was engaged as prime consultant for a retrofit at one of the campus’ main academic buildings. Our scope included replacement and upgrade to:
- Twelve fan coil units, complete with additional coil elements
- Approximately 30 hot water cabinet unit heaters located throughout the building, along with additional Building Automation System (BAS) integration
- Dual-duct terminal boxes for approximately 2/3’s of the building. The terminal boxes themselves were upgraded from pneumatically controlled to digital controlled complete with BAS integration.
- Domestic hot water system
- Pool heating system
The project used low temperature heating water from a ground-source heat pump system. This increased the physical size of the replacement heaters, which required accompanying structural and architectural modifications.
Domestic hot water preheat was implemented to take advantage of the low temperature heating water from the heat pump system, and was implemented as part of the domestic hot water system replacement and upgrade. The upgrades included a new high efficiency condensing water heater paired with a heating water to domestic water heat exchanger.
The pool heating system was not operational prior to the project. It was made functional and upgraded to take advantage of the low temperature heating water available from the heat pump system, by replacing the heat exchanger and adding additional controls.
Dual duct terminal boxes upgrades included replacing the terminal boxes to implement Variable Air Volume (VAV) control. In a few areas, existing single duct VAV terminal boxes were replaced with those equipped with reheat coils to facilitate occupant comfort.
The project timeline was aggressive, with engineering design starting late May 2019 and tendering in late August 2019. The project took advantage of the 2019 Christmas break to complete the majority of construction in order to minimize impacts to the occupants.
Image courtesy of Google Maps
SERVICES
Prime Consultant | Mechanical Engineering
PROJECT FEATURES
Twelve fan coil units | ~ 30 hot water cabinet unit heaters | Additional BAS integration | Dual-duct terminal boxes, upgraded from pneumatically controlled to digital control, complete with BAS integration | Domestic hot water system | Pool heating system
LOCATION
King City, Ontario
KEY SCOPE ELEMENTS
Heating plant uses ground source heat pump to deliver low temperature heating water | Compressed project schedule to meet heating season deadline | Unique dual-duct HVAC system being modernized and upgraded for re-use
Peel Regional Police
Headquarters Renovation
The renovation project customized this building for policing and admin functions. Originally, the building had been designed for pharmaceutical research labs and support spaces.
HH Angus was engaged to provide M&E and IMIT consulting engineering for the partial renovation of this existing Peel Regional Police facility. The building has a gross area of ~ 91,000 ft2, with the renovated area totaling ~ 70,000 ft2.
The project involved replacing two boilers and heat pumps, along with the installation of a new make-up air unit on the roof. These service the entire building’s hydronic heating, while the new make-up air unit serves the basement area. As well, part of the contract was to upgrade mechanical systems to suit new load, due to changes in office floor layout and function.
Among the challenges of the project was the requirement for multiple site surveys in order to confirm the existing equipment on site. The project was also completed under a very aggressive schedule in order to meet the targeted occupancy date.
SERVICES
Mechanical Engineering | Electrical Engineering | Lighting Design | IMIT Consulting
PROJECT FEATURES
Renovated space size: 70,000 ft2 | Status: Completed 2019
LOCATION
Peel Region, GTA, Ontario
KEY SCOPE ELEMENTS
Extensive mechanical upgrades and replacements | Multiple site surveys to overcome lack of as-built drawings | Fast-track schedule
Images courtesy of CS&P Architects Inc.
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
CREIT
Bloor-Dundas District Energy Feasibility StudyHH 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
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
Toronto Public Library
Wychwood BranchThe Wychwood Library is one of Toronto’s oldest libraries, built in 1915/16 and listed among Toronto's designated Heritage Properties.
HH Angus provided mechanical and electrical engineering for the renovation and expansion of the Wychwood Branch of the Toronto Public Library. Following a feasibility study that identified the desired expansion was possible, the facility expanding from 6,381 ft2 to 15,000 ft2, with mechanical and electrical systems replaced throughout the facility, including new incoming electrical and communication services.
The project included interior and exterior renovations to building structure, mechanical and electrical systems and a complete redesign of the floor space. Necessary facility upgrades included replacing flooring, millwork, furniture, elevator and heating, ventilation and air condition (HVAC) systems and equipment, building systems, and building envelope repairs.
The redesign of this heritage facility created room for approximately 2000 ft2 of seniors’ program space as well as innovative space for youth, both of which were needed in the community.
SERVICES
Mechanical Engineering | Electrical Engineering | Lighting Design
PROJECT FEATURES
Heritage building | Green roof on expansion | Completed 2022
LOCATION
Toronto, Ontario
KEY SCOPE ELEMENTS
Interior and exterior renovation | 2-storey expansion | Mechanical and electrical systems replaced throughout | New incoming electrical and communication services
Celebrating heritage
Key features of the original building were maintained and highlighted through the lighting design, which emphasized the brick exterior and vaulted ceilings in the Great Hall.
Header image credits: Shoalts and Zaback Architects Ltd.
