Long-term performance analysis of a hybrid ground source heat pump system in Finland

Research output: Contribution to journalArticleProfessional

Abstract

This study investigated methods for improving the long-term performance of a hybrid GSHP system coupled to district heating and an air-cooled chiller. These methods include adjusting indoor air setpoints and dimensioning air handling unit (AHU) cooling coils. The system performance was analysed based on 25-year simulations in IDA ICE 4.8. By using the studied methods, the minimum outlet brine temperature was increased by around 3°C in the last heating season, the average heat pump COP in the last heating season was increased by 3 % and the share of the GSHP heating energy in the last heating season was improved by 2 percentage points. However, ensuring long-term operation still required extra solutions.
Original languageEnglish
Pages (from-to)53-57
Number of pages5
JournalRehva journal
Volume61
Issue number1
Publication statusPublished - 2024
MoE publication typeD1 Article in a trade journal

Keywords

  • hybrid ground source heat pump
  • district heating
  • borehole free cooling
  • long-term performance analysis

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