a unit which represents one degree of variation from a standard average daily temperature, used as in determining fuel requirements
A unit of measurement equal to a difference of one degree between the mean outdoor temperature on a certain day and a reference temperature, used in estimating the energy needs for heating or cooling a building.
- Alternative form of degree day.
(plural degree days)
- A measure of heating or cooling, computed as the integral of a function of time that generally varies with temperature.
- A unit used in estimating the fuel consumption for a building; equal to the number of degrees that the mean temperature, for a 24-hour day, is below the base temperature, often 65F.