Patent ID: 11971177
Assignee: EMG ENERGIMONTAGEGRUPPEN AB
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  G  Y | IPC F  G

Claim 7:
8. A controller to control a local distribution system's outtake of heat from a thermal energy distribution grid, wherein the local distribution system comprises a device for exchange of thermal energy between the local distribution system and the thermal energy distribution grid, one or more thermal energy distribution devices, a feed for feeding the one or more thermal energy distribution devices with thermal energy from the device for exchange of thermal energy by conducting a heat transfer fluid, and a return for returning the heat transfer fluid from the one or more diet mal energy distribution devices to the device for exchange of thermal energy, the controller comprising:
a first receiver configured to receive data pertaining to a base steering temperature for the local distribution system's outtake of heat from the thermal energy distribution grid;
a second receiver configured to receive a control signal indicative of reducing a steering temperature for the local distribution system's outtake of heat from the thermal energy distribution grid;
a third receiver configured to receive data pertaining to a return temperature of the heat transfer fluid in the return; and
a steering temperature controller to control the steering temperature for the local distribution system's outtake of heat from the thermal energy distribution grid as the steering temperature controller is configured to:
determine a reduced steering temperature for the local distribution system's outtake of heat from the thermal energy distribution grid based on the control signal and the base steering temperature,
compare the reduced steering temperature and the return temperature,
upon the determined reduced steering temperature being lower than the return temperature, determine a temporary steering temperature being higher than the return temperature and lower than the base steering temperature,
set the temporary steering temperature as the steering temperature for the local distribution system's outtake of heat from the thermal energy distribution grid, and
control the local distribution system's outtake of heat from the thermal energy distribution grid based on the temporary steering temperature.