District heating arrangement, local unit of a district heating arrangement, control unit to the local unit and method of operating a district heating arrangement

摘要

The invention refers to a district heating arrangement, a local unit, a control unit, and a method for the district heating arrangement. This includes a heat-producing central unit (1), which provides a hot primary fluid, a number of local units (5), and a conduit network (2, 2') extending from the central unit to each local unit (5). At least a first and a second local unit (5) includes a control unit, which includes first means for providing at least a parameter related to the need of hot primary fluid at the local unit and second means for accomplishing the control of the operation of the local unit. The control unit includes a communication device (50), which permits communication in two directions of information regarding said parameter between the first and the second local unit. The control unit controls the operation of the first local unit (5) with respect to said parameter regarding the second local unit.