Grundfos
CRE-Pump™ and BoosterpaQ®
Pay Back, IRR, and Performance Curves
Maybe you have considered using variable speed
pumps. Maybe you heard that advances in technology
have made installation and operation simple, improved
reliability, lowered initial cost, and reduced
energy costs. But, you wonder if they save enough
energy to justify an increase in cost over a conventional
system. Although variable speed systems are quickly
approaching the cost of conventional systems,
and in some cases are less than conventional systems,
it is worthwhile to know the Pay Back period (P.B.)
and/or internal rate of return (IRR) when they
do cost more. GFSaves makes this analysis easy
and complete. Select either the "CRE-pump
and CRE-Plus" or the "BoosterpaQ"
tab at the bottom of your screen and follow the
instructions to select the best system to match
your specific application requirements.
Section - 1, "Matching the GPM and Feet
of Head Profile to the best system" - This
section analyzes the flow and head requirements
for your application. It compares the energy consumption
of Grundfos, variable speed single and multiple
pump systems to PRV regulated systems. This provides
the information you need to match a CRE-pump or
BoosterpaQ to your specific system. The results
are automatically transferred to next section.
A performance graph is also available in this
section.
Section 2, "Electrical Energy Savings"
- This section summarizes the electrical savings
of a CRE-Pump or BoosterpaQ over a PRV system.
The results are automatically transferred to Section
3.
Section 3, "IRR and Pay Back" - You
may itemize or enter a lump sum investment cost
for the variable speed and constant speed systems.
The IRR and Pay Back are automatically calculated.
You can include additional savings for maintenance
reduction due to the elimination of PRVs (Pressure
Regulating Valves), other life-cycle cost reductions,
improved process quality (less heat, noise, etc.),
or other value added factors.
The print function has been formatted to include
only the relevant results from each of the 3 sections.
Printing this information is accomplished using
standard Excel printing steps.
You may print the performance graph in section
1. Click on the "Performance Curve"
button (CRE-pump systems) or the "Performance
Graph" button (BoosterpaQ systems) located
above and to the right the system selection chart.
Follow the instructions to position to the correct
graph for viewing and printing. Click on the graph
to highlight it. Then follow standard Excel printing
steps.
GFSaves runs on Excel 97 or later.
The licensing agreement is under the "License"
worksheet tab. |
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