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http://help.looplinkpro.com/en/latest/examples/Equivalent_Full_Load_Cooling_and_Heating_Hours.pdf
Annual Hours 1300 - 1500 2200 - 2400 2800 - 3600 Cooling Heating Cooling Heating Cooling Heating Atlanta 590-830 200-290 950-1360 480-690 1300-1860 380-600 Baltimore 410-610 320-460 690-1080 720-890 880-1480 570-770 Bismarck 150-250 460-500 250-540 950-990 340-780 810-900 Boston 300-510 450-520 450-970 960-1000 610-1380 760-870
https://www.eia.gov/energyexplained/units-and-calculators/degree-days.php
Heating degree days (HDD) are a measure of how cold the temperature was on a given day or during a period of days. For example, a day with a mean temperature of 40°F has 25 HDD. Two such cold days in a row have a total of 50 HDD for the two-day period. The West North Central division had the largest number of heating degree days in 2020.
https://www.epa.gov/sites/production/files/2016-08/documents/print_heating-cooling-2016.pdf
Change in Annual Heating Degree Days by State, 1955–2015 Versus 1895–1954 . This map shows how the average number of heating degree days per year has changed in each state over time. The map was created by comparing the first 60 years of available data (1895–1954) with the
https://www.epa.gov/climate-indicators/climate-change-indicators-heating-and-cooling-degree-days
Figure 1 shows each year’s average heating and cooling degree days across the contiguous 48 states. Figures 2 and 3 show how heating and cooling degree days have changed by state, based on a comparison of the first 63 years of available data (1895–1957) with the …
https://unmethours.com/question/9772/how-to-calculate-heating-load-based-on-heating-degree-hours/
heatLoss through each room wall/ceiling/floor is = 3*3 * 0.0026 = 0.0234 kW/C. For all six "sides" of the room, it is = 6 * 0.0234 = 0.1404 kW/C. Let's assume that for some particular hour during a year, the heating degree hour is 20 C (in winter for example).
http://www.greenbuildingtalk.com/Forums/tabid/53/aff/21/aft/82939/afv/topic/Default.aspx
So if it's 26k btu/hour @ -11 F (99% design temp). at +66F for interior temp. 26,000 / delta of 77F (+66F minus -11F) = 337.66 * 24 hours = 8103 btus per day per degree.. * 7000 HDD (taken from http://www.degreedays.net) = 56,727,272 btus/year . Sounds roughly correct?
https://www.nyserda.ny.gov/About/Publications/EA-Reports-and-Studies/Weather-Data/Monthly-Cooling-and-Heating-Degree-Day-Data
Annual heating seasons run October through March (seasonal, weekly, and monthly) " Normal " is a 30-year degree day average value for the period 1971-2000, unless otherwise noted. " Degree-days " are relative measurements of outdoor air temperature used as an index for heating and cooling energy requirements. Heating degree-days are the number of degrees that the daily average …
https://hvac-talk.com/vbb/threads/74027-Converting-HDD-into-heating-hours
(found at http://www.wrh.noaa.gov) There are 8,760 hrs in a year... is there a calculation to convert degree days into hours?? Is there a corrolation? Or better yet, anyone know of an online resource for heating hour and cooling hour info for different regions or cities??
https://www.degreedays.net/
Degree Days Calculated Accurately for Locations Worldwide. Buildings require more heating in colder weather, and more air-conditioning in hotter weather. Degree Days.net provides the data to quantify this and help monitor, manage, and reduce energy consumption in millions of buildings around the world. It is developed and maintained by BizEE ...
https://www.watermgt.com/Equivalent%20Full%20Load%20Cooling%20Hours.pdf
There are 8,760 hours in a year. The table means that of the 8,760 hours, the equipment use rate was equal to full ton capacity for the hours indicated. Full ton capacity is what we get when we ask for total cooling tons for a building. Buildings will install more tons that needed so they have backup if part of the system goes down.
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