Seasonal thermal energy storage for large scale district heating

J.J.R. Remmelts, S.C. Tensen, C.A. Infante Ferreira

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

Seasonal thermal energy storage (STES) systems in combination with heat pumps can significantly reduce the impact of peak loads in large scale district heating systems and allow for the application of renewable heat sources in these networks. This paper investigates technologies with the highest potential for implementation in large scale district heating networks and identifies high temperature aquifer thermal energy storage (HT-ATES) as the most suitable technology. The HT-ATES has been applied at the primary side of the network (90 to 110 oC) and at the secondary side (72 to 92 oC). Suitable locations for the STES have then been identified. A control volume approach is used in Matlab to predict heat transfer and pressure drop in the HT-ATES wells considering porosity, permeability, grain size and geometry of the aquifer. The temperature distribution and extraction temperature are predicted as function of time. The yearly heating demand of a network has been used in combination with different operating modes to identify the required size of the HT-ATES. The simulations indicate that it will take 5 years to reach steady temperature supply.
Original languageEnglish
Title of host publicationProceedings of the 13th IEA Heat Pump Conference (HPC2020)
PublisherIEA
Pages1633-1643
Publication statusPublished - 2021
Event13th IEA Heat Pump Conference - Jeju, South-Korea, Jeju, Korea, Republic of
Duration: 26 Apr 202129 Apr 2021
Conference number: 13th
https://heatpumpingtechnologies.org/publications/13th-iea-heat-pump-conference-2021-conference-proceedings-full-papers/

Conference

Conference13th IEA Heat Pump Conference
Abbreviated titleIEA HPC
CountryKorea, Republic of
CityJeju
Period26/04/2129/04/21
Internet address

Keywords

  • Heat pump
  • High temperature aquifer energy storage
  • District heating

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