Analysis of possibilities to utilize excess heat of supermarkets as heat source for district heating

B. Zühlsdorf*, A. Riis Christiansen, F. Müller Holm, T. Funder-Kristensen, B. Elmegaard

*Corresponding author for this work

Research output: Contribution to journalConference articleResearchpeer-review

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Abstract

The paper analyses the possibilities to recover excess heat from CO2 supermarket refrigeration plants for supply to district heating networks. It was analyzed to operate the refrigeration system at an increased gascooler pressure to directly supply heat and to install a cascade heat pump to recover the heat from lower temperatures. Increasing the gascooler pressure appeared promising during summer, while the cascade heat pump showed higher COPs during colder periods. The investment for the cascade heat pump could be compensated within 4 years at district heating prices above 37 €/MWh.
Original languageEnglish
JournalEnergy Procedia
Volume149
Pages (from-to)276-285
ISSN1876-6102
DOIs
Publication statusPublished - 2018
Event16th International Symposium on District Heating and Cooling (DHC2018) - HafenCity University, Hamburg, Netherlands
Duration: 9 Sep 201812 Sep 2018

Conference

Conference16th International Symposium on District Heating and Cooling (DHC2018)
LocationHafenCity University
CountryNetherlands
CityHamburg
Period09/09/201812/09/2018

Keywords

  • CO2
  • District Heating
  • Excess Heat Recovery
  • Supermarket Refrigeration
  • Sector Coupling

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