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. 2022 Aug 1;1:17. doi: 10.1038/s44172-022-00018-3

Fig. 6. Measured temperatures, pressures, and power during 4 cycles of charging/discharging operation of the flexible heat pump prototype.

Fig. 6

a Pressures at the inlet (P1) and outlet (P2) of the compressor. b Water temperature at the inlet (T9) and outlet (T10) of the condenser. c Refrigerant temperature at the inlet and outlet of the heat storage and the water temperature in the heat storage water tank. d Refrigerant temperature at the inlet and outlet of the evaporator. e Compressor power, showing lower power consumption during discharging while the heating capacity of the heat pump remains constant at 2.5 kW.