This result was unexpected, especially since the heating degree-day
component was included in the interaction term.
Annual degree-day information (including heating degree-day
and cooling degree-day) is usually continuous.
Environment Canada (2010) provides heating degree-day
bases of 0[degrees]C, 5[degrees]C, 10[degrees]C, 15[degrees]C, 18[degrees]C, and 24[degrees]C (32[degrees]F, 41[degrees]F, 50[degrees]F, 59[degrees]F, 64.
Each day's heating degree-days
are summed to create a heating degree-day
measure for a specified reference period.
The preliminary results showed that the radiant system used 22% more fuel per heating degree-day
than the forced-air system.
Offers were solicited for heating degree-day
(HDD) swaps for the period of March 2009 for London Heathrow (LHR).
These regression models can be used in conjunction with commonly-known methods of calculating building heating and cooling energy use such as the heating degree-day
(HDD) and cooling degree-day (CDD) methods.
A heating degree-day
is a unit used in estimating quantities of fuel or power consumption, based on a daily ratio of consumption and the mean temperature below 65 degrees Fahrenheit.
6) Natural gas demand is expected to respond positively to heating degree-days
, and electricity demand can respond positively to both heating and cooling degree-days.
One useful way to view this information is to observe the spring and fall months, when cooling degree-days and heating degree-days
For example the number of heating degree-days
in a month, [HDD.
The large stock draws were at least in part due to colder temperatures in the first two months of the year compared with a year earlier, as measured by gas-customer weighted heating degree-days