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

Claim 1:
2. A controller configured to selectively set a reversible heat pump assembly in either a heating mode or in a cooling mode, the controller comprising a control circuit configured to:
for a time period, determine, using a demand determining function, 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;
generate, using a control function, a control signal indicative of whether the reversible heat pump assembly is to be set in either the heating mode or in the cooling mode, wherein the control function is configured to use the heating demand and the cooling demand as input data;
for the time period, determine, using a duty cycle function, a heating duty cycle for the heating mode and a cooling duty cycle for the cooling mode, wherein the duty cycle function is configured to use the heating demand and the cooling demand as input data;
wherein the control function is further configured to, in response to a combination of the heating duty cycle and the cooling duty cycle being below a threshold, delay, in time, the setting of the reversible heat pump assembly in the cooling mode, in case of the control signal is already indicative of the reversible heat pump assembly is to be set in the heating mode, or delay, in time, the setting of the reversible heat pump assembly in the heating mode, in case of the control signal is already indicative of the reversible heat pump assembly is to be set in the cooling mode; and
send, using a transmission function, the control signal to a heat pump of the reversible heat pump assembly.