Cliff Street Central Heating and Cooling Plants
Cliff Street Central Heating & Cooling Plant

Name: Central Heating and Cooling Plants

Owner: Public Services and Procurement Canada

Project Location: Ottawa, ON

Construction Completion: 2016

Building Type: Industrial

Project Type: New Construction

Construction Value: $64.0M (Total) $17.5M (M&E)

Project Description


Goodkey, Weedmark & Associates Limited (GWA) has extensive experience designing Central Heating & Cooling Plants (CHCP). The size of CHCP projects range from single buildings to 50 building District CHCPs. The following are some examples of recent CHCP projects:

Cliff Central Heating & Cooling Plant - Ontario (2009 - 2012) CHCP includes four (4) aged (40‑45 years old) steam driven chillers capable of producing 25,000 tons of cooling. The projects included refurbishment of condensers for chillers no. 1, 2, 3 & 4, followed by the replacement of chiller no. 3 with a new 5,000 ton high efficiency centrifugal electric unit, replacement of condenser water piping, installing protective lining on condenser water piping, water boxes and tube sheets, replacement of river water intake travelling screens. As a separate commission a feasibility study and concept design for a new permanent 26,000 ton all electric cooling plant to replace the existing c/w emergency power back-up was also provided.

Confederation Heights Heating & Cooling Plant -Chiller No. 3 Replacement - Ontario (2012 - 2015) Confederation Heights Heating & Cooling Plant provides chilled water to eleven (11) buildings surrounding the plant through an underground chilled water loop. A total of five (5) chillers are installed at the plant providing a capacity of 4,900 tons of cooling. The projects included replacement of chiller no. 3 with a new 900 ton high efficiency centrifugal electric unit, replacement of cooling tower fill media on the summer cooling towers and replacement of the boiler combustion air system.

Tunney’s Pasture Heating & Cooling Plant - Chillers No. 1 & No. 2 Replacement - Ontario (2014 - 2016) Tunney’s Pasture Central Heating and Cooling Plant (CHCP) provides heating and cooling for 18 buildings within the complex. The cooling medium is chilled water that is provided by 5 centrifugal chillers. The plant was constructed in the 1950s with some of the original equipment still extant. Chillers no. 1 & no. 2 are steam-driven centrifugal chillers that are now over 40 years old, coming to the end of their service life. The project included replacement of chillers no. 1 & No. 2 with new 3,500 ton high efficiency centrifugal electric unit (c/w VFDs), replacement of all chilled water pumps to convert to variable primary system, replacement of all river water pumps, installation of new free cooling heat exchangers, new refrigerant monitoring system for the chiller plant, new refrigerant storage system for chillers no.1 & no. 2.

Booth Street - Stand-alone Heating Plants - Ontario (2012– 2016) Five (5) existing government office buildings (555, 580, 588, 601 & 615 Booth Street) with total combined floor area of 135,000 m2 required new stand-alone heating plants installed due to the scheduled closure of the aging Booth Street Central Heating Plant. The project consisted of preparation of detailed options investigation and feasibility review for each facility, life cycle cost analysis, preparation of design concepts, preparation of detailed design documents, project schedules, construction implementation and commissioning as prime consultant. The construction project consisted of installation of two (2) exterior stand-alone packaged steam boiler plants, with new natural gas service and steam, condensate and water tie-ins to existing services. One (1) packaged boiler plant consisted of two (2) high pressure steam boilers with total combined output capacity of 7,000 kg/hr steam to serve 555 Booth Street. The other packaged boiler plant consisted of two (2) high pressure steam boilers with total combined output capacity of 10,175 kg/hr. steam to serve 601 & 615 Booth Street. An existing basement storage room within 588 Booth Street was retrofitted to accommodate three (3) new high pressure steam boilers with total combined output capacity of 9,390 kg/hr steam with associated ancillaries to serve 580 & 588 Booth Street.

Place de Ville - Ontario Local central chilled water & heating water plant in Place de Ville Tower B serves six (6) buildings. GWA has completed several modifications and upgrade of chillers, chilled water piping distribution, steam boilers, high and low steam/condensate piping distribution over the life of the complex.

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