Heating Knowledge: Using District Heating Efficiently with the eXergiemaschine

Excessively high return temperatures can impair the efficiency of district heating systems—especially when heat demand is low, such as during long periods of hot water circulation. A large temperature differential between the supply and return lines allows for more efficient use of heat sources and network capacity. The eXergiemaschine ensures a cool return flow through targeted temperature stratification in the buffer tank, thereby supporting efficient operation. In this in-depth technical article, you’ll learn how the eXergiemaschine works, what technical requirements are necessary for its use, and how it can contribute to a more efficient use of district heating.