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A degree day is a measure of heating or cooling. Totalised degree days from an appropriate starting date are used to plan the planting of crops and management of pests. Weekly or monthly degree-day figures may also be used within an energy monitoring and targeting scheme to monitor the heating and cooling costs of climate controlled buildings, while annual figures can be used for estimating future costs.
Additional recommended knowledge
A degree day is computed as the integral of a function of time that generally varies with temperature. The function is truncated to upper and lower limits that vary by organism, or to limits that are appropriate for climate control. The function can be estimated or measured by one of the following methods, in each case by reference to a chosen base temperature:
A zero degree-day in Energy monitoring and targeting is when both heating and cooling consumption is at a minimum, which is useful with power utility companies in predicting seasonal low points in energy demand.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Degree_day". A list of authors is available in Wikipedia.|