USPWF - What does USPWF stand for? The Free Dictionary
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The energy cost to be expended each year of the life cycle period is converted to present-day dollars using the Uniform Series Present Worth Factor (USPWF) at a specified interest rate and a specified annual energy cost inflation [ASHRAE 2011b].
kW = kilowatt [both an I-P and an SI unit] kWh = kilowatt-hour [both an I-P and an SI unit] USPWF = Uniform Series Present Worth Factor VAV = Variable Air Volume Superscripts n = number of study periods (e.g., number of months or years) Symbols $ = Dollars (United States currency) REFERENCES