Temperature level optimization for low-grade thermal networks using the exergy method

Abstract Low-temperature thermal networks open the field for additional renewable and recovered energy sources to be used. The exploitation of low exergy level resources requires decentralized heat pumps having a significant impact on network's overall electricity consumption. Thus, compromise must found in order minimize electrical consumption while integrating maximum sources. This optimum is governed by temperature network. paper aims at determining optimal network using criterion. method detailed applied multi-source blueCAD (Fribourg) fed geothermal energy, FriCAD, high district heating decreases as share production increases. For blueCAD, it ranges from 40 55 °C.