Comparison Model

When replacing a motor, we typically wait until it has failed completely. We usually replace the failed motor with one that is identical in size and efficiency rating.

This is most expedient. But is it the most economic? Is it less expensive in the long run to use an energy efficient replacement, even if the initial cost is higher? How can we calculate the difference?

There is also the case where replacing an operating standard efficiency motor with an energy efficient motor would have a favorable payback period. How do we figure this out?

In this section we will examine specific motor replacement examples, evaluating the replacement of a standard efficiency motor with an energy efficient model. In each of these scenarios we will calculate the annual energy savings and compute simple payback times.

It is recommended you preview the model before viewing the examples. This will allow you to see how the analysis has been constructed. The model is constructed to be tutorial in nature, and any subsection can be accessed directly.

And Furthermore . . .