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Definitions for "Heating Degree Days"
Keywords:  colder, winter, hdd, abbrev, degree
Related Terms: Hdd, Cooling degree day, Heating degree day, Cdd, Cooling degree days, Degree day, Heating degree-day, Cooling degree-days, Degree days, Heating degree-days, Degree-day, Temperature, Mean temperature, Centigrade, Celsius temperature scale, Heat rise, Celsius, Fahrenheit, Absolute zero, Bowen ratio, Fahrenheit temperature scale, Centigrade temperature scale, Pyrometer, Absolute temperature, Temperature rise, Absolute temperature scale, Cooling load, Kelvin temperature scale, Dry bulb temperature, B.t.u, Sensible heat, Thermal equilibrium, Kelvin, Thermometer, Ptc, Minimum temperature, Minimum thermometer, Heat load, Kelvin scale, British thermal unit, Standard temperature, Apparent temperature, Specific heat, Heat capacity, Maximum thermometer, Heat, sensible, Rankine cycle, Specific heat capacity, Isothermal, Heating
(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°F on a given day. For example, if a location experiences a mean temperature of 55°F on a certain day, there were 10 HDD (Heating Degree Days) that day because 65 - 55 = 10.
crh.noaa.gov
A heating degree day is a measure of how much the average of the daily high temperature and low temperature is less than a reference temperature. In other words how much heating is required. More details.
weatherderivs.com
The number of degrees below 65o F for a day summed over the entire heating season.
jcc.kctcs.edu
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