cooling degree day


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cooling degree day

[′kül·iŋ di′grē ‚dā]
(mechanical engineering)
A unit for estimating the energy needed for cooling a building; one unit is given for each degree Fahrenheit that the daily mean temperature exceeds 75°F (24°C).
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The Chicago Mercantile Exchange lists both heating degree day and cooling degree day contracts.
The new listings will begin trading on Monday, February 23, 2009, and include Heating Degree Day (HDD) and Cooling Degree Day (CDD) contracts on both Monthly and Seasonal futures and options.
Cooling Degree Day contracts are available for trading starting today with Heating Degree Day and Weekly contracts to start in June and July, respectively.
Each edition also contains monthly summaries for heating and cooling degree days (65 degree F base).
The gas market "continues to be under pressure'' as demand-weighted cooling degree days, a measure of weather-related electricity demand, have been below normal, Soozhana Choi, a strategist at Deutsche Bank AG in Washington, said in a note to clients Monday.
This would not be an absolute conclusion as other parameters such as ratio of heating degree days to cooling degree days in each city also affects the conclusion.
1 (ASHRAE 2004a) provides a classification of climate zones according to the heating and cooling degree days and the atmospheric moisture.
13) Heating degree days calculate the daily variation in temperature at a location below 65 degrees Fahrenheit, while cooling degree days calculate the variation above 65 degrees.
Looking back at the Phoenix Swap, this time with reconstructed data, AIR found that there now was an 86% chance that the contract would settle below 4,250 cooling degree days.
The new procedure uses data on heating and cooling degree days to model the effects of weather more accurately in those industries.
Cooling degree days are commonly used in studies of regional wage variation as a broad measure of climate throughout the year, while average January and July temperatures are included to account for seasonal extremes.
19) The weather variables were the actual average temperatures during 1979, the highest temperature in the summer, the lowest temperature during the winter, the number of heating degree days during 1979, and the number of cooling degree days.