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heating degree-day

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heating degree-day [′hēd·iŋ di′grē ‚dā]
(meteorology)
A form of degree-day used as an indication of fuel consumption; in United States usage, one heating degree-day is given for each degree that the daily mean temperature departs below the base of 65°F (where the Celsius scale is used, the base is usually 19°C).

heating degree-day
Same as degree day.


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This one-year period was warmer than average for Ottawa, Canada, with 3970 Celsius heating degree-days <18[degrees]C (7146 Fahrenheit heating degree-days <64[degrees]F) and 417 Celsius cooling degree days >18[degrees]C (751 Fahrenheit cooling degree days >64[degrees]F).
Offers were solicited for heating degree-day (HDD) swaps for the period of March 2009 for London Heathrow (LHR).
Residential heating degree-days (electric and natural gas) were 9% lower than last year and 10% lower than normal.
 
 
 
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