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Climate • Regionalclimatic variations impact performance • Allelseequal- greater HDD means that more efficient heating systems will be more cost effective Michigan – Water Winter Wonderland Location HDD CDD Record Low Detroit 6729 566 -13 deg. Traverse City 7794 458 -33 deg. US Average 4126 1459 N/A US EPA: https://portfoliomanager.energystar.gov/pm/degreeDaysCalculator Heating Degree Days (HDD) are a measure of how cold a location is over a period of time relative to a base temperature, most commonly specified as 65 degrees Fahrenheit. The measure is computed for each day by subtracting the average of the day's high and low temperatures from the base temperature (65 degrees), with negative values set equal to zero. Each day's heating degree days are summed to create a heating degree day measure for a specified reference period. Heating degree days are used in energy analysis as an indicator of space heating energy requirements or use. (US DOE, Energy Information Administration) 6PDF Image | Heat Pumps for Space and Water Heating
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
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