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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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65 60 55 50 45 40 35 30 25 20 0 9 8 7 6 5 4 T_top T1 T2 T3 T4 1800 3600 5400 7200 9000 10800 12600 14400 T_rad_supply water gas T_rad_return Flow heat_cap transient tank behavior under frosting/defrosting conditions with 3,4kW radiator load at -2°C Tamb- 2008-04-17 time [s] Figure 29. Tank temperature distributions during defrosting period (electric heater at off-mode, with radiator load) 70 60 50 40 30 20 10 8 water gas cooler in Tank charging at +0 degreeC Tamb with no radiator load *- 2008-04-07 01 -10 0 0 1800 3600 5400 7200 9000 10800 12600 14400 time [s] Figure 30. Tank temperature distributions during defrosting period (electric heater at off-mode, no radiator load) 3 T5 T6 0 2 1 cooler in water gas cooler 7 out T1 6 T2 T3 T4 T5 compr. power COP Flow normalized [x/0,263m3/h] *radiator pump was working 5 4 3 2 temperature [°C] Temperature [°C] normalized flow [-]; power [kW]; COP [-] heating capacity [kW], Flow [m3/h] 37

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CO2 heat pumps for the Swedish market

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