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

Luyi Xu (Corresponding author), Fang Guo, Pieter-Jan Hoes, Xudong Yang (Corresponding author), Jan L.M. Hensen

Research output: Contribution to journalArticleAcademicpeer-review

14 Citations (Scopus)

Abstract

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.
Original languageEnglish
Article number111113
Number of pages20
JournalEnergy and Buildings
Volume247
Early online date19 May 2021
DOIs
Publication statusPublished - 15 Sept 2021

Funding

This research is part of the seasonal storage for solar and industrial waste heat utilization for urban district heating project funded by the Joint Scientific Thematic Research Programme (JSTP) – Smart Energy in Smart Cities (project No. 467-14-002) and the International S&T Cooperation Program of China (ISTCP) (project No. 2015DFG62410). We gratefully acknowledge the financial support from the Netherlands Organization for Scientific Research (NWO) and Ministry of Science and Technology of the People’s Republic of China (MoST). We would also like to thank our industrial partners from Chifeng Heran Energy-saving Science and Technology Co. Ltd. supporting the installation of the living laboratory in Chifeng. Without their efforts and cooperation, we would not have been able to obtain the measurements to conduct the case study. This research is part of the seasonal storage for solar and industrial waste heat utilization for urban district heating project funded by the Joint Scientific Thematic Research Programme (JSTP) ? Smart Energy in Smart Cities (project No. 467-14-002) and the International S&T Cooperation Program of China (ISTCP) (project No. 2015DFG62410). We gratefully acknowledge the financial support from the Netherlands Organization for Scientific Research (NWO) and Ministry of Science and Technology of the People's Republic of China (MoST). We would also like to thank our industrial partners from Chifeng Heran Energy-saving Science and Technology Co. Ltd. supporting the installation of the living laboratory in Chifeng. Without their efforts and cooperation, we would not have been able to obtain the measurements to conduct the case study.

FundersFunder number
Nederlandse Organisatie voor Wetenschappelijk Onderzoek

    Keywords

    • Borehole thermal energy storage
    • Industrial waste heat
    • Model validation
    • Modelica
    • TRNSYS

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