Abstract
Water pit heat storage has been proven a cheap and efficient storage solution for solar district heating systems. The 60,000 m3
pit storage in Dronninglund represents in many ways the
state-of-the-art large-scale heat storage, demonstrating a storage
efficiency higher than 90% during its operation. The storage is used for
seasonal and short-term heat storage of solar heat generated by a
37,573 m2 solar collector field and supplies heat directly to
the district heating grid or is used during winter as an alternative
heat source to a heat pump. This study aims to provide an overview of
the available information on the Dronninglund water pit heat storage,
including a detailed description of the design, ground conditions, and
operating strategy. The used dataset (2014–2020) has been the foundation
for most investigations and simulations of pit thermal energy storages.
However, due to a lack of public documentation, various studies have
used different post-processing methods and assumptions, leading to
inconsistent results. Therefore, the dataset has been manually
quality-controlled, and erroneous data have been removed with the aim of
establishing a high-quality reference dataset. Moreover, an overview of
the available parameters and metadata is provided, along with example
plots. To promote the usage of the quality-controlled dataset, all the
developed quality-control routines and Python scripts are made available
on GitHub.
Original language | English |
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Journal | Solar Energy |
Volume | 251 |
Pages (from-to) | 68-76 |
ISSN | 0038-092X |
DOIs | |
Publication status | Published - 2023 |
Keywords
- Heat storage
- Seasonal storage
- Data analysis
- Python
- PTES