Overview of ..
The Energy Efficiency Manual gives you a wide range of
efficiency improvements for cooling equipment and systems. This
Note explains concisely how efficiency is rated in air conditioning,
refrigeration, and industrial cooling.
Unlike most energy-using equipment, a cooling machine moves heat
from one place to another, rather than converting heat from a fuel
into some other form. Therefore, cooling equipment requires a modified
definition of efficiency. Here you will learn the common efficiency
ratings, including coefficient of performance (COP), energy efficiency
ratio (EER), seasonal energy efficiency ratio (SEER), and kilowatts
Another unusual feature of cooling equipment efficiency is its
extreme sensitivity to evaporator temperature and condensing temperature.
You will learn about the standard rating temperatures of the Air
Conditioning and Refrigeration Institute (ARI).