22185Quantified Savings Examples

The following are some examples of how to generally quantify savings from Automatic Controls measures. Many of the methods use rules of thumb, and assumptions to simplify the work. More accurate results can be had by using a rigorous computer model, but since time is money the luxury of detailed models is not always available. Without an excessive investment in time, the methods shown below will yield results close enough to identify probable savings and to tell if the measure is worthwhile or not. While this is by no means a complete listing, it is hoped to convey the general method of abbreviated energy accounting for multi-faceted processes when improvements are proposed. Some of the examples show straight forward benefits, and others show benefits with parasitic losses or competing processes. The first example below is Condenser Water Reset, and is discussed in detail. Other abbreviated solutions are provided in the table that follows.

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