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HPWH Performance Report Table 6: Sanden Performance (IP units) Site aCOP Tank Size (Gal) Climate Zone HDD65 Average Ambie nt Temp(°F) Average WaterFlow (Gal/Day) Average Hot Water Temp(°F) Average Inlet Water Temp(°F) Months of Data Rossland Site 1 2.62 83 6 8,280 40.8 27 127.1 51.8 15 Rossland Site 2 3.15 83 6 8,280 44.6 32 139.0 50.9 15 Rossland Site 3 2.06 83 6 8,280 43.9 26 126.6 51.3 15 Kelowna Site 1 1.86 43 5 7,009 43.9 20 126.4 61.7 15 Kelowna Site 2 3.62 43 5 7,009 46.4 76 124.8 50.4 15 V. Island Site 2 1.98 43 4 5,413 54.0 32 143.4 63.5 12 V. Island Site 3 3.52 43 4 5,413 51.5 39 142.3 60.5 12 Ave rage 2.69 60 5.1 7,360 46.4 36 132.8 55.7 14 Table 7: Rheem Performance (IP units) 15 Site aCOP Tank Size (Gal) Climate Zone HDD65 Average Ambie nt Temp(°F) Average WaterFlow (Gal/Day) Average Hot Water Temp(°F) Average Inlet Water Temp(°F) Months Kelowna Site 4 1.62 80 5 7,009 59.8 86 123.4 57.9 8 V. Island Site 1 1.76 65 4 5,413 49.1 52 121.0 50.6 4 V. Island Site 4 1.73 65 4 5,413 61.1 17 118.9 60.8 11 V. Island Site 5 2.06 65 4 5,413 62.0 74 121.4 56.3 12 Average 1.79 69 4.3 5,812 58.0 57 121.2 56.4 9 Kelowna Site 3 2.08 80 N/A N/A 69.1 46 124.5 51.0 15 Figure 5 shows the monthly average COP of all sites along with the median, upper and lower quartiles. Across the board the Sanden units perform with a higher COP than the Rheem units – 2.7 versus 1.8. On average, both technologies performed with a COP of 1.5 or better in every month of the study including the coldest winter months. 15 HDD65 values are from 2017 ASHRAE Handbook: Fundamentals (IP), Appendix: Design Conditions for Selected Locations. 8PDF Image | CO2 Integrated Heat Pump Water Heater
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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
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