CO2 heat pumps for the Swedish market

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CO2 heat pumps for the Swedish market ( co2-heat-pumps-swedish-market )

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26 24 22 20 18 water mass flow marks 16 defrosting 14 12 10 2,75 2,5 2,25 2 evaporator 1,75 ice free, 1,5 water drops 1,25 on fins 1 0,75 0,5 0,25 2 0 11:42: water starts boiling -0,5 8 6 40 -2 11:16: no ice -4 -6 -8 -10 -12 -14 -16 11:27: first ice signs -18 -20 -22 -24 -0,25 -0,75 -1 -1,25 -1,5 -1,75 -2 -2,25 12:02: complete -2,5 -2,75 -3 -3,25 -3,5 SecC_in SecC_out RComp_in heat. Capacity Tevap_mid T evap_bottom Comp Flow m3/h COP 10:32 10:43 10:55 11:06 11:18 11:29 11:41 11:52 12:04 12:15 12:27 12:38 12:50 13:01 13:13 13:24 time Figure 37. Defrosting test at -6°C at position 1 12 3 10 2.5 82 6 1.5 41 2 0.5 00 -2 -4 -6 -8 -10 -12 -14 -16 15:10:00 15:38:48 -0.5 -1 -1.5 -2 -2.5 -3 -3.5 -4 evap. air in evap. air out CO2 compr. in heat. Capacity compr. power COP water flow temperature [°C]; heat. capacity [kW] temperature [°C]; heating capacity [kW] COP [-]; flow [m3/h]; power [kW] COP [-]; power [kW]; flow [m3/h] 16:07:36 16:36:24 17:05:12 time [hh:mm:ss] 17:34:00 18:02:48 18:31:36 Figure 38. Defrosting test at 2°C at position 2 45

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CO2 heat pumps for the Swedish market

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