A quote from my LEED certification studies. It's not really taken out of context, since the paragraph preceding and succeeding it do not enlighten the reader on any of the terms contained therein.
"Fan energy is separated from the cooling system in the Performance Rating Method. Thus, if the HVAC manufacturer provides an overall efficiency rating, such as an energy efficiency ratio (EER), it must be separated into the component energy using the coefficient of performance (COP) or other conversion (Equations G-A, G-B, G-C, Pages G-24 and G-26 of the ASHRAE 90.1, I-2004 User's Manual)."
[I yawn as I am poked awake]
Wha? Where am... Oh yeah... Anyway, I'm pretty sure this is a summary of a complex method to determine the relative efficiencies of two HVAC systems. However, it is meaningless without the actual method being described or shown in any way. Not to mention that it's buried in a pile of similar paragraphs trying to describe other complex methods for other components.
This particular section is NOT well written for the uninitiated.
If anyone is having trouble sleeping, give me a call. I'll read aloud from this book for a paragraph or two.