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Simulation method for a pit seasonal thermal energy storage system with a heat pump in a district heating system

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  • Sorknæs, Peter

Abstract

To better facilitate renewable energy systems, the district heating sector is currently changing towards lower temperatures and increased cross-sectoral integration. Seasonal thermal energy storage systems alongside heat pumps have received an increasing attention. However, the operation of a seasonal thermal energy storage system alongside a heat pump is more complex than a short-term thermal energy storage system, and as such, several complex simulation models have been developed. These models have shown to be usable for simulating the operation, but due to their complexity are difficult to implement in simulation models that focus on overall energy system analyses. Based on the operation of an existing seasonal thermal energy storage system, this paper provides a simulation method for a seasonal thermal energy storage system with a heat pump that can be utilized in overall energy system simulation models. The simulation method is based on the proven different operational situations of the seasonal thermal energy storage system. The method is shown to be able to approximate the actual operation on an hourly basis and the yearly thermal losses.

Suggested Citation

  • Sorknæs, Peter, 2018. "Simulation method for a pit seasonal thermal energy storage system with a heat pump in a district heating system," Energy, Elsevier, vol. 152(C), pages 533-538.
  • Handle: RePEc:eee:energy:v:152:y:2018:i:c:p:533-538
    DOI: 10.1016/j.energy.2018.03.152
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