Heating degree day — United States Heating Degree Day map, 1961 1990 … Wikipedia
heating degree day (HDD) — A day in which the average daily temperature is less than 65 degrees Fahrenheit, and therefore likely to be a day in which people turn on their heat. A heating degree day is assigned a value that represents the number of degrees that days average … Financial and business terms
Population-weighted Degree Days — Heating or cooling degree days weighted by the population of the area in which the degree days are recorded. To compute national population weighted degree days, the Nation is divided into nine Census regions comprised of from three to eight… … Energy terms
Degree Day — A unit for measuring the extent that the outdoor daily average temperature (the mean of the maximum and minimum daily dry bulb temperatures) falls below (in the case of heating, see Heating Degree Day), or falls above (in the case of cooling,… … Energy terms
degree day — (deg da) a unit used in meteorology and engineering to measure the demand for heating or cooling. In the United States, it s agreed that 65 °F (18.3 °C) is the critical outside temperature; below this tempeature heating is needed and above it… … Dictionary of units of measurement
degree day — Term created to assess and acknowledge expected demand for energy. A degree day value is the difference between a day s average temperature and a previously set temperature ( in the U.S., 65 degrees Fahrenheit). Degree days above 65 degrees are… … Financial and business terms
Heating intensity — The ratio of space heating consumption or expenditures to square footage of heated floor space and heating degree days (base 65 degrees Fahrenheit). This ratio provides a way of comparing different types of housing units and households by… … Energy terms
Heating oil — Fuels for heating Heating oil Wood pellet Kerosene Propane Natural gas Wood Coal Heating oil, or oil heat, is a low viscosity, flammable liquid petroleum product used as a fuel for furnaces or boilers in buildings. Home heating oil is often … Wikipedia
Degree day — A degree day is a measure of heating or cooling. Totalized degree days from an appropriate starting date are used to plan the planting of crops and management of pests and pest control timing. Weekly or monthly degree day figures may also be used … Wikipedia
Design Heating Load — The amount of heated air, or heating capacity, to be supplied by a heating system; usually the maximum amount to be delivered based on a specified number of heating degree days or design outside temperature … Energy terms
