Heating degree days are summations of negative differences between the mean daily temperature and the 18 °C base; cooling degree days are summations of positive differences from the same base.
**Heating Degree Days**
A heating degree day is the departure of one degree per day in the mean daily temperture from a standard reference temperature of usually 65 degrees F.
Degree Day: It gauges the amount of heating or cooling needed for a building using 65 degrees as a baseline. To compute heating/cooling degree-days, take the average temperature for a day and subtract the reference temperature of 65 degrees.
Degree Day - For any individual day, degree days indicate how far that day's average temperature departed from 65oF. Heating Degree Days measure heating energy demand. It is a measure to indicate how far the average temperature fell below 65oF.
DEGREE DAY A measure of the departure of the mean daily temperature from a given standard. That is one degree day for each degree (Fahrenheit or Celsius) of departure above or below the standard during one day.
Degree Day - a measure of the difference between the mean daily temperature and some given base temperature: one degree day is given for each degree (degree Celsius or degree Fahrenheit) of departure above (or below) the base temperature during ...
Degree Day
A measure that gauges the amount of heating or cooling needed for a building using 65 degrees as a baseline.
Degree Day- a measure of the departure of the daily mean temperature from the normal daily temperature; heating and cooling Degree Days are the departure of the daily mean temperature from sixty-five degrees Fahrenheit.
Degree days Computed from each day's mean temperature (max+min/2). For each degree that a day's mean temperature is below or above a reference temperature is counted as one degree day.
Degree Day - A measure of departure from the mean daily temperature. One degree day occurs when the daily mean temperature is above or below 65 degrees Fahrenheit.
Heating Degree Days
(abbrev. HDD) A form of degree day used to estimate energy requirements for heating. Typically, heating degree days are calculated as how much colder the mean temperature at a location is than 65?Ǭ?F on a given day.
HEATING DEGREE DAY
One heating degree day is given for each degree that the daily mean temperature is below 65°F. It is used as an indication of fuel consumption.
cooling degree day: a measurement used to determine how much fuel will be needed to cool indoor environments. There is one cooling degree-day unit for each degree that the mean daily temperature departs from 65 °F or 18 °C.
COOLING DEGREE DAY A cooling degree day is given for each degree that the daily mean temperature departs above the baseline of 75 degrees Fahrenheit.
Cooling Degree Day (CDD)- useful in determining cooling energy requirements. Defined as (MT - 65)= CDD,where MT is Mean Temperature (F). If MT is less than 65 degrees F, CDD=0. MT= Mean (average)Temperature of the day.
Cooling Degree Days
(Abbrev. CDD) - A form of Degree Day used to estimate energy requirements for air conditioning or refrigeration. Typically, cooling degree days are calculated as how much warmer the mean temperature at a location is than 65?Ǭ?
Cooling Degree Day: see Degree Day
Cooperative Observer: An individual (or institution) who takes precipitation and temperature observations-and in some cases other observations such as river stage, soil temperature, ...
Grout CurtainA barrier produced by injecting grout into a vertical zone, usually narrow (horizontally), and in the foundation to reduce seepage under a damGrowing Degree DayThe number of degrees that the average temperature is above a ...
Degree day A unit that represents one degree of deviation from a reference point in the mean daily outdoor temperature (usually 65°F) and that is used to measure heating and cooling requirements.
 See also: Degree, Temperature, Weather, Thunder, Air
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