Patent ID: 11874014
Assignee: E.ON SVERIGE AB
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 11:
12. A method for controlling a reversible heat pump assembly comprising a heat pump having a first side and a second side, the heat pump being configured to transfer heat from the first side to the second side or vice versa, wherein the reversible heat pump assembly is configured to be selectively set in either a heating mode or a cooling mode, wherein in the heating mode the heat pump is configured to transfer heat from the first side to the second side; wherein in the cooling mode the heat pump is configured to transfer heat from the second side to the first side, the method comprising:
for a time period, determining a heating demand for heat to be delivered by the reversible heat pump assembly and a cooling demand for cold to be delivered by the reversible heat pump assembly;
determining, for the time period and based on the heating demand, a heating duty cycle for the heating mode;
determining, for the time period and based on the cooling demand, a cooling duty cycle for the cooling mode; and
controlling, based on the heating demand and the cooling demand, the setting of the reversible heat pump assembly in either the heating mode or the cooling mode, wherein the act of controlling comprises, in response to a combination of the heating duty cycle and the cooling duty cycle being below a threshold, delaying, in time, the setting of the reversible heat pump assembly in the cooling mode, in case of the reversible heat pump assembly is already in the heating mode, or delaying, in time, the setting of the reversible heat pump assembly in the heating mode, in case of the reversible heat pump assembly is already in the cooling mode.