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HDDHard Disk Drive
HDDHorizontal Directional Drilling
HDDHyderabad (Pakistan)
HDDHeating Degree Days (weather derivatives / insurance index converting temperature into prices)
HDDHickory Dickory Dock (nursery rhyme)
HDDHospital de Día (Spanish: Day Hospital)
HDDHeavy-Duty Diesel
HDDHigh Density Disk
HDDHigh Definition Decoder
HDDHigh Definition Display
HDDHuman Development Department (World Bank)
HDDHarry the Dirty Dog (book)
HDDHard Drive Division (various companies)
HDDHead Down Display
HDDHead-Down Display
HDDHigh Density Data
HDDHearing Dogs for the Deaf (UK)
HDDHeavy Drinking Day (alcohol dependence)
HDDHigh Density Diskette
HDDHot Diggity Dog
HDDHard Decision Decoding
HDDHealth Data Dictionary
HDDHighly Doped Drain
HDDHolographic Disk Drive
HDDHrvatski Dalmatinski Dom (Croatian Dalmatian Home, political party)
HDDHardware Design Document
HDDHuman Disorientation Device
HDDHierarchical Data Dictionary
HDDHammer Debounce Device (airguns)
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References in periodicals archive ?
"With the heating season lasting eight months, Fairbanks has about 14,000 heating degree days. Communities north of the Brooks Range have about 20,000.
Heating degree days, a measure of how much cooler it is than normal, requiring more use of heat, also hit the highest number since 2014.
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 (15.6[degrees]C) outside temperature base (or 749 Celsius-based heating degree days).
Engine heat produces enough hot water to heat the facility's hangar despite being located in a region with over 5,000 heating degree days.
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:
There were only 24 population-weighted heating degree days last week compared with 64 at the same point last year.
Electricity consumption was regressed on temperature, in raw form as well as by first calculating the heating degree days (HDDs) and cooling degree days (CDDs).
Visiting a friend in Raleigh, N.C., in October, I confirmed their rate was 9.2 cents per kilowatt-hour, and, of course, their heating costs are less than half (2,600 heating degree days v.
Initial results for cycling and gas consumption are shown in Figure 1, in which the weekly gas consumption (therms) and cycles are shown adjusted for local heating degree days (Base 65[degrees]F/18[degrees]C).
Natural gas home customer-weighted heating degree days
LOGAN, IA: Monthly total heating degree days, [online] [cited 05 October 2012].