Grundfos Pump Audit Indicates Dramatic Savings for Vancouver Skyscraper

Overview_TEXT

Overview

Just steps away from Stanley Park, located in the heart of Coal Harbour, overlooking downtown Vancouver’s waterfront and North Shore Mountains, are Classico condominiums. Towering at 38 stories, Classico houses 191 residential suites.

Having been built in 2003, the original boiler room had some substantial operational issues. The existing booster system was oversized for the application. The pumps supplying water to the upper floors were performing ineffectively, costing nearly $4,500 a year in maintenance, and were noisy. On top of that, the large size of the boilers contributed to a lack of space for domestic hot water storage and the existing heat exchangers were leaking.

The requirement was to identify an energy-efficient, little to no maintenance, compact solution. George Malburg of Ram Mechanical worked with Grundfos to conduct a pump audit which profiled the existing systems’ flow, pressure and power consumption. The data collected revealed that one of the pumps was running around the clock, even when there was no flow, indicating potential for a significant amount of energy savings with a replacement system.

After analyzing the prepared profiles, Grundfos proposed that Ram Mechanical install a BoosterpaQ system, projecting an energy savings of 127,590 kWh annually. It consists of three CR10 vertical inline multistage pumps with motors totalling 15 hp, each equipped with a VFD (variable frequency drive).

The BoosterpaQ was chosen for the following reasons:

• It is ideal for water supply and pressure boosting in multi-story buildings, where needs can vary throughout the day, and it is a compact unit, requiring approximately a 20 sq.ft. footprint.

• The CR pumps are known for their economical and quiet operation. They are extremely reliable and have one of the highest efficiencies in the market.

• The MPC (multi-pump controller) controls the number of CR’s in operation, as well as the individual CR’s. It alternates between lead and lag pumps, ensuring equal run hours on all of the CR’s. Having built in pump curves, it can identify if it is more efficient to operate two or more pumps at a slow speed, rather than one pump at full speed.

• The VFD identifies variations in water flow, allowing the pumps to continuously regulate speed, while maintaining the desired constant pressure. This helps extend the lifespan of the pumps and reduces energy consumption and maintenance costs.

• The enhanced sleep mode in the VFD ensures that the system goes into standby mode when there is no demand, making for substantial energy savings.

Classico’s new system was installed in October 2011. The transition from the old system to the new posed somewhat of a challenge since it involved shutting down the water system, but with careful planning it was executed without a hitch. Additional changes in the boiler room included eight new condensing boilers and two new heat exchangers. Given the leftover space, three 450-litre domestic hot water tanks were also able to be installed.

Upon installation of the BoosterpaQ, maintenance costs and noise were immediately eliminated. Its performance has been flawless. Power consumption has dropped by 97%, and in April 2012 the energy and water savings were verified by a third party audit to be 130,000 kWh per year.





    Facebook Twitter LinkedIn Technorati

Topic:

Grundfos Pump Audits and BoosterpaQ

Location:

Vancouver, British Columbia

Company:

Classico Condominiums

Contacts_TEXT

Contact

If you need a similar solution, please contact us for further information.

Telephone

(905) 829-9533

Contact

If you need a similar solution, please contact us for further information.

Telephone

(905) 829-9533