Influence of building heat distribution temperatures on the energy performance and sizing of 5GDHC

Energy performance and sizing criteria of 5th generation district heating and cooling networks as a function of the heat distribution temperature

In this paper, an energy simulation model of a 5GDHC network was developed in Modelica for a case study located in Denmark. Furthermore, the paper discusses how the results obtained from the Danish case study can be generalized and applied to other cases using a simplified mathematical approach. It is found that about 1.5% of electric energy savings can be achieved for each temperature degree reduction in the heat distribution system.

Authors: A. Maccarini (Aalborg University), A. Sotnikov (Lucerne University of Applied Sciences and Arts), T. Sommer (Lucerne University of Applied Sciences and Arts), M. Wetter (Lawrence Berkeley National Laboratory), M. Sulzer (Swiss Federal Laboratories for Materials Science and Technology), A. Afshari (Aalborg University)