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Montréal, Canada

ASHRAE Transactions

Northern climate like the one in Montreal 4,557 DD (SI) - (8,200 DD (IMP)) presents huge challenges to the designers to reach Net-Zero Energy buildings. A large amount of the energy required is related to the heating of the outside air and the 24 hours / day, 7 days/'week operation. It is not rare to be faced with labs designed a few decades ago which consumes in the order of 2150 kW-h equiv / m 2-year (200 kW-h equiv / sq.ft.-year), compared to 540 kW-h equiv / m 2-year (50 kW-h equiv / sq.ft.-year) and better for recent labs. This paper presents a list of potential options to improve energy efficiency. Three laboratories are presented with the different measures that were applied in those buildings. Source

ASHRAE Journal

Buanderie Centrale de Montreal (BCM), a non-profit public agency, has offered laundry services to hospitals in the Montreal area. To remain competitive with the private sector and to provide high quality services, BCM needed to modernize its services. The services offered by BCM are considered essential services for hospitals that cannot be short of clean linen. Codes and engineering good practices also have changed. Quebec provincial health-care and workers regulations specified that extra rest periods are required if the indoor wet-bulb globe temperature is higher than 86°F. Original ventilation systems were sized to evacuate the heat rejection of production equipment, mainly steam and natural gas dryers and steam ironers. The exhaust air unit is equipped with a cooling coil. In winter, exhaust air is cooled before leaving the building, providing a heat recovery load of 325,000 Btu/h. Source

Lemire N.,ASHRAE | Baril P.-L.,PAGEAU MOREL | Le Blanc E.L.,PAGEAU MOREL | Le Blanc E.L.,ASHRAE
ASHRAE Journal

Because the mechanical system supplying the lab area of the Otto Maass Building at McGill University in Montreal had not been renovated since 1964, the building was one of the largest energy consumers on campus. Following a renovation, building energy consumption dropped from 13% to 5% of the total energy consumed on the entire campus. Sixty percent of the building's 140,000 ft2 (13 000 m2 ) is labs. Prior to renovation, in the laboratory area the average fume hood density was 19 chemical fume hoods per 5,000 ft2 (465 m2 ). The building's ventilation system operated at a constant flow rate of 135,000 cfm (63 700 L/s) and operated 24/7. Steam was generated from the power plant (natural gas) and a 850 ton (2990 kW) local chiller was located in the penthouse. © Copyright 2014 ASHRAE. Source

ASHRAE Journal

The design team of a project selected radiant heating/cooling slab, ground source heat pump, and heat recovery devices to efficiently heat and cool the Mountain Equipment Co-op (MEC) in Longueuil, QC, Canada. The 200 mm concrete floor slab thickness was carefully calculated to accumulate the energy on a 12-hour basis. This thermal storage gave the opportunity to optimize the heat pump operation and maximize their efficiency. This concrete slab had an energy accumulation capacity of 555 kWh with a variation of 2.8°C in heating or cooling mode. The optimization of the envelope resulted in an envelope insulated to nearly twice the recommendations of the Model National Energy Code for Buildings, reducing the overall energy needs for the building. It was decided to create a series of clerestory with a sawtooth-shaped roof to maximize daylighting. Light sensors shut down the artificial lighting partially or completely when natural lighting was sufficient, while occupancy sensors in small spaces shut off the lighting when not in use. Source

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