Benefit of combining cooling and heating in cold district heating systems




Greater Copenhagen area

Cold and ultra-low temperature district heating units are proposed as they enable the recovery of low temperature renewable heat sources and very low heat losses in the distribution pipes due to the low distribution temperature. This means however, that every building needs to have a further heating unit, e.g. a heat pump that can lift up the temperature from the district heating line to temperatures high enough for space heating and domestic hot water preparation. So far it seems like these ultra-low temperature district heating systems are economically less feasible than conventional district heating at low temperature (60 °C forward). However, it is expected that the economic feasibility can be greatly improved when the same distribution grid is also used as a cold utility e.g. to cool office buildings. This project could involve an energy- and exergy analysis of a possible system for a whole year and should also include an evaluation of the economic feasibility (there are tools available you could built up on).

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Company / Organization

DTU Mekanik


Wiebke Meesenburg




Supervisor info

MSc in Sustainable Energy


Wiebke Meesenburg


Torben Schmidt Ommen, Brian Elmegaard


MSc thesis

Must be completed


Technical University of Denmark

For almost two centuries DTU, Technical University of Denmark, has been dedicated to fulfilling the vision of H.C. Ørsted – the father of electromagnetism – who founded the university in 1829 to develop and create value using the natural sciences and the technical sciences to benefit society.

Today, DTU is ranked as one of the foremost technical universities in Europe, continues to set new records in the number of publications, and persistently increases and develops our partnerships with industry, and assignments accomplished by DTU’s public sector consultancy.

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