August 1, 2025Open Access

Performance analysis of a water-source heat pump supplied by the return line of a district heating network

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The performance of the water-source heat pump can improve thermal efficiency in district heating systems, reducing heat losses.
During low outdoor temperatures, district heating networks experience high supply water temperatures over 90 °C, revealing critical efficiency challenges.
Assessment involves the use of heat pump technologies in managing heat transfer fluid temperatures, enhancing system reliability and efficiency.
Lowering the temperature of the heat transfer fluid may enable significant decarbonization pathways for district heating systems, promoting sustainability.

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Performance analysis shows potential for improving thermal energy efficiency in district heating, implying decarbonization pathways.

Dimchev et al. (2025) studied this question.

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