- Jan
- 25
Case Study: Domestic water boosting system cuts energy use by 90%
Posted on January 25, 2012 by — No Comments
The potential efficiencies of water boosting systems from Grundfos are highlighted in the January cover story of Plumbing Mechanical Engineer, which profiles one apartment building’s jaw-dropping energy savings achieved through variable speed pump technology.
In fact, talk about putting your money where your mouth is- this project’s contractor was so confident in the potential energy savings that he paid for the new system himself — all in an effort to convince building management to invest in the efficient technology.
The gamble paid off in spades.
An independent project audit vindicated the daring claim by documenting a 90 percent energy savings over a one-week period in September 2010, and a 26-month payback period.
Moreover, the drop in power consumption translates to an annual utility cost reduction of nearly $18,160. Total project savings are estimated at $275,000 over the average 15-year pump lifespan. Despite removing 70 HP from this system, the computerized control, demand-based performance of the new pumping station averages just 30 percent capacity.
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