Pump up the… Savings

For pumps running long hours, the energy cost generally exceeds the capital cost of the pump itself (often by multiples!).  Sure, like M.A.R.R.S*., you could just focus on pumping up the volume, but at Engineered Efficiency we emphasise efficient pump selection because it pays off over the lifetime of a system.
Choosing a slightly more efficient pump can save huge amounts of energy and cost. Factors like pump type, motor efficiency, duty point, pipework design and system curve all influence efficiency. Overlooking these can mean wasted energy and higher operating costs.
For processes that run 24/7, the difference between a standard and efficient pump isn’t just numbers on a spec sheet, but instead thousands of dollars saved per year. Our clients see real, measurable benefits when we optimise their pumping systems.
For instance, consider a selection of a pump we did for a client which is expected to run for around 7500 hours per year at 70l/s and 40m head.  Two pumps were proposed, both with 37kW motor and similar pump curves. Pump A costs around $1000 more than Pump B. But dig a bit deeper, and at the point we want to operate, Pump A has an overall efficiency (pump and motor) of 78%, while Pump B is closer to 72%. Pump B will consume around $3,000-$4,000 more power per year than Pump A (based on typical WA business tariffs).
These are just a couple of the parameters we look at when helping our clients select pumping systems. Make sure you consider all your costs, not just the ticket price.
*[Showing your age - Ed]