Autors: Dimchev, I. N., Hristov, K. H.
Title: Performance analysis of a water-source heat pump supplied by the return line of a district heating network
Keywords:

Abstract: District heating systems are hierarchical infrastructures comprising heat generation, distribution, and end-use thermal energy consumption. The heat distribution network is designed to deliver thermal energy reliably and efficiently, in alignment with the specific heating demand profiles of connected end-users. In large-scale district heating systems, supply water temperatures in the distribution pipes can exceed 90 °C during periods of low outdoor air temperatures, while return pipe temperatures typically approach 60 °C. The transportation of thermal energy through the network is inherently associated with heat losses, which are directly influenced by the temperature gradient of the heat transfer fluid and the thermal integrity of the pipe insulation. One approach to mitigating these losses involves lowering the temperature of the heat transfer fluid, which can be achieved using heat pump technologies within the district heat supply infrastructure. Moreover, heat pump systems present a promising pathway for the decarbonization of district heating, enabling the use of heat sources with a low temperature profile.

References

  1. Connolly D Lund H Mathiesen B V. Werner S Möller B Persson U Boermans T Trier D Østergaard P A. Nielsen S 2014 Energy Policy 65 475 89 10.1016/j.enpol.2013.10.035
  2. Sayegh M A. Jadwiszczak P Axcell B P. Niemierka E Brys K Jouhara H 2018 Energy Build 166 122 44 10.1016/j.enbuild.2018.02.006
  3. Foster S et al 2016 Heat Pump in District Heating Final Report (DECC by Element Energy and Carbon Alternatives)
  4. Ommen T S. Markussen W B. Elmegaard B 2013 Proc. 2nd Symposium on Advances in Refrigeration and Heat Pump Technology (Odense, Denmark)
  5. Ministry of Regional Development and Public Works 2022 Regulation No. RD-02-20-3 of November 9, 2022 on the technical requirements for the energy performance of buildings (Sofia, Bulgaria)
  6. Hristov K 2024 IOP Conf. Ser.: Earth Environ. Sci. 1380 012024 10.1088/1755-1315/1380/1/012024
  7. Beloev H Iliev I Ilieva D Terziev A Ivanov M 2023 IOP Conf. Ser.: Earth Environ. Sci. 1128 012005 10.1088/1755-1315/1128/1/012005
  8. Mouzeviris G A. Papakostas K T. 2022 Energies 15 279 10.3390/en15010279
  9. Zlateva P Yordanov K 2019 E3S Web Conf 112 01007 10.1051/e3sconf/201911201007
  10. Pospisil J Spilacek M Kudela L 2018 Energy 154 10.1016/j.energy.2018.04.131
  11. Hristov K Genovski I 2023 IOP Conf. Ser.: Earth Environ. Sci 1128 012024 10.1088/1755-1315/1128/1/012024

Issue

IOP Conference Series: Earth and Environmental Science, vol. 1532, 2025, Bulgaria, https://doi.org/10.1088/1755-1315/1532/1/012019

Вид: публикация в международен форум, публикация в реферирано издание, индексирана в Scopus