Cold district heating using groundwater in Timraa. A feasibility study. Kall fjaerrvaerme med grundvatten, Timraa kommun. Foerstudie

The objective of this work has been to investigate the feasibility of supplying heat to buildings by means of a cold water distribution system, from which heat would be abstracted at the point of use by heat pumps. The cold water could be abstracted from the old underground esker aquifer of the Indal river, a groundwater flow system that is unique in Sweden. However, the feasibility study indicates that the costs would be too high in the light of present-day energy prices and the size of the potential load. The system might, however, become feasible if there was new development in the area, allowing cold water to be distributed for individual heating of buildings. A necessary requirement for use of this method is that the distribution system should be compact, or that the heat load density within the area should be high, i e that of an urban area.(authors).