Sheraton Vancouver Sustains Water Pressure with Grundfos Energy-Efficient Booster

Overview_TEXT

Overview

Overlooking the Pacific Ocean is downtown Vancouver’s third tallest skyscraper: Sheraton Wall Centre.

Being a green hotel with a strong dedication to environmental sustainability, including water and energy conservation, the Sheraton saw it fitting to turn to Grundfos for a pump audit when the original 13-year old booster pumps that were supplying water to the North Tower needed replacing. The challenge was to find an energy-efficient pumping system that would pump water to the top floors while maintaining constant water pressure throughout the building.

Sherezad Shafiq of Grundfos worked with mechanical contractor Dan-Jen Mechanical to conduct the pump audit. During the audit process the existing system’s pressure profile was logged, as well as the system’s water and power consumption. It was identified that by “right-sizing” the system to meet the Sheraton’s actual demand, there was potential for substantial savings. Based on these findings Grundfos recommended a MPC (multi-pump controller) BoosterpaQ system consisting of 3 CR vertical inline multistage pumps for variable speed operation.

The BoosterpaQ was chosen for the following reasons:
• The CR range of multistage centrifugal pumps provides the best foundation for the booster system. The pumps are extremely reliable and have the highest efficiency when compared to any other multistage centrifugal pumps on the market. They provide substantial savings on energy costs.
• The MPC specially designed for Grundfos boosters controls the number of CR’s in operation, as well as the speed of the individual CR’s. It alternates between lead and lag pumps, ensuring equal run hours on each of the CR’s.
• The variable frequency drive (VFD) located in the MPC adapts to variations in water pressure demand in the system, ensuring that it has the capability of maintaining pre-set constant pressure. It also allows the CR’s to run only when demand is detected. This decreases energy consumption, saving on energy costs, extends the life span of the pumps, and reduces maintenance costs.
• The system is a compact unit with easy access to all service parts, saving time and money. It comes preassembled for easy installation and is tested prior to delivery.

The switch from the old pumps to the new BoosterpaQ took place on January 31, 2012 between the hours of 3 and 6 a.m., ensuring only a short disruption in water service for guests and residents. Given the BoosterpaQ’s small footprint it was able to be installed alongside the original pumps, which saved on breakdown and removal costs.

Within the first three months of the BoosterpaQ’s installation, the Sheraton Wall Centre began to effectively reduce energy consumption and achieve cost savings. Sheraton is well on its way to reducing energy consumption from 192 000 kWh annually to a projected 58 000 kWh, reducing Sheraton’s energy bill by over $9,000 per year. Additionally, Sheraton will be saving thousands of dollars per year on maintenance costs.





    Facebook Twitter LinkedIn Technorati

Topic:

Energy efficient BoosterpaQ used to provide water pressure to highest floors of hotel and residential tower.

Location:

Vancouver, British Columbia

Company:

Sheraton Hotel & Residential 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