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 HMS only effects the heating system's response to cold outdoor air temperature (heating degree days) while other building characteristics, such as the occupancy rate and thermal response, had minimal variations after the retrofit, so a two-parameter model using heating degree days was used:
To extrapolate annual savings from these two simulated days, while actual heating loads typically correlate with weather conditions and two simulated days do not permit a detailed annualized model, the winter day was used to approximate consumption for all days with average Heating Degree Days (HDD) above 20[degrees]F*day (11[degrees]C*day) while the shoulder season was used to approximate consumption for all days with average HDD 20[degrees]F*day or less (11[degrees]C*day).
7) Consequently, a modest increase in cooling degree days and decrease in heating degree days can also be observed as shown in Figures 3 and 4.
Winner of the Lowest Use--Heat category, using the least heat energy per square foot per heating degree day, is the Palmer Jr.
Children residing in regions in the top tertile in terms of heating degree days had a 30% higher prevalence of eczema than did those living in the lowest tertile.
the economist who calculated health care outlays, made no estimate of the costs or savings should the climate warm; but his numbers show that for every 5% reduction in the annual number of heating degree days, a measure of winter's chill, health care costs would fall by $0.
We used a correction method involving weather normalization using heating degree days (HDD).
On the other hand, a review of the gas consumption data revealed that 50,000 kWh were used during January 2014, a 30 day period, which equaled 1,349 heating degree days based on a 60[degrees]F (15.
Heating degree days were 8 percent below the same period in 2016 and 16 percent below normal, resulting in a residential sales decrease of 3 percent and a 1 percent decrease in commercial sales.