Investigating energy performance of large-scale seasonal storage in the district heating system of chifeng city

Investigating energy performance of large-scale seasonal storage in the district heating system of chifeng city: Measurements and model-based analysis of operation strategies

Xu, L. (TU Delft Applied Ergonomics and Design; Eindhoven University of Technology)
Guo, Fang (Tsinghua University)
Hoes, Pieter-Jan (Eindhoven University of Technology)
Yang, Xudong (Tsinghua University)
Hensen, Jan (Eindhoven University of Technology)

2021

This paper presents a modeling and simulation method that supports energy performance assessment and operation strategy investigation of borehole thermal energy storage in the Chifeng district heating (DH) system. A living laboratory in Chifeng, China that integrates a 0.5 million m3 borehole thermal energy storage system, an on-site solar thermal plant and excess heat from a copper plant is presented. The research adopts Modelica models from open source libraries to evaluate the system. The validity of the borehole thermal energy storage model is evaluated through an inter-model comparison study and an empirical validation test. We used the validated model to investigate three operation strategies. We conclude that the time-scheduled combined operation strategy is more beneficial for the studied system regarding CO2 emission reduction.

Borehole thermal energy storage
Industrial waste heat
Model validation
Modelica
TRNSYS

http://resolver.tudelft.nl/uuid:debae52e-dd96-44c4-817d-ff0a4b42876d

https://doi.org/10.1016/j.enbuild.2021.111113

0378-7788

Energy and Buildings, 247

Institutional Repository

journal article

© 2021 L. Xu, Fang Guo, Pieter-Jan Hoes, Xudong Yang, Jan Hensen