Facilities meeting one or more of the following criteria may benefit from this opportunity.
- Multiple pumps run in parrallel
- Pumps are not checked for impeller wear or damge annually
- End use requirments vary significantly from day to day
In any irrigation system, opportunities for reduced operating cost arise out of:
- Lowering required water horsepower by:
- Reducing pumping outlet pressure by minimizing distribution line pressure losses, and end of line pressure requirements.
- Reducing the volume of water pumped by ensuring excess water is not delivered to any end points, or bypassed to source without being used.
- Increasing pump efficiency. The efficiency of any particular pump is a function of:
- Operating point on its flow versus head curve: pumps have one Best Efficiency Point (BEP) and efficiency deteriorates as the point of operation moves away from this point.
- Pump wear: as a pump ages, both impeller and housing wear and pump performance and efficiency deteriorates.
- Pump design: Pump efficiency can be improved by
- Ensuring it operates as close as possible to its best efficiency point
- Overhauling it
- Replacing it with a better selected pump
These templates are excel based spreadsheets that quickly and easily help users quantify energy savings, cost savings, implementation costs, and payback. The excel spreadsheets then automatically write a professional looking report for users to utilize as they see fit.
- Download the Efficient Irrigation (Multiple Pumps, Pump Curve Data).xls Excel Sheet
Following is an example of a recommendation prepared with this tool:
- View the Efficient Irrigation.pdf document