Determining the priority of heat sources used in district heating

In this paper the measure of priority attributed to the different heat sources produced locally and used in the energy supply of a given settlement using district heating will be shown. The rate of district heating is introduced and its critical value that shows whether the settlement is able to self-supplement its district heat demand or not is determined. Two algorithms - depending on the legal environment - are established for the optimal use of local heat sources, one that deals with cogeneration and one that does not.