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  4. Exergy-based model predictive control for design and control of a seasonal thermal energy storage system
 
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Exergy-based model predictive control for design and control of a seasonal thermal energy storage system

Publikationstyp
Conference Paper
Date Issued
2019-09
Sprache
English
Author(s)
Jonin, Matthieu  
Khosravi, Mohammad  
Eichler, Annika  
Villasmil, Willy  
Schuetz, Philipp  
Jones, Colin  
Smith, Roy S.  
TORE-URI
http://hdl.handle.net/11420/12753
Journal
Journal of physics. Conference Series  
Volume
1343
Issue
1
Article Number
012066
Citation
Journal of Physics: Conference Series 1343 (1): 012066 (2019-11-20)
Contribution to Conference
International Conference on Climate Resilient Cities - Energy Efficiency and Renewables in the Digital Era 2019, CISBAT 2019  
Publisher DOI
10.1088/1742-6596/1343/1/012066
Scopus ID
2-s2.0-85076258564
Publisher
IOP Publ.
In this paper, we investigate the problem of controlling a seasonal thermal energy storage (STES). The STES considered here is a large scale tank of heated water installed in a building and connected to a solar panel. The stored energy in the STES can be used for providing the building with the space heating (SP) and the domestic hot water (DHW). In order to utilize the STES efficiently, we design a suitable model predictive control (MPC) scheme. In this regard, we develop an appropriate model for the system with an emphasis on the computational tractability of problem. Toward this end, we introduce a bilinear model with analytical linearization. Subsequently, we solve the optimization problem using a sequential quadratic programming (SQP) framework in a reasonable computational time. For controlling the system, in addition to solving the corresponding optimization problem, the main challenge is incorporating seasonal features in the MPC. This issue is resolved by augmenting the cost function with an additional term which is defined based on the exergy of system. Moreover, we address the challenging question of deriving minimal achievable size of the STES tank while satisfying user demand of DHW and SP. Finally, the efficiency of the proposed method is verified numerically.
DDC Class
530: Physik
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