Optimized Operation and Sizing of Solar District Heating Networks with Small Daily Storage
Régis Delubac,
Mohammad Sadr,
Sabine Sochard,
Sylvain Serra and
Jean-Michel Reneaume (jean-michel.reneaume@univ-pau.fr)
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Régis Delubac: LaTEP, E2S UPPA, Universite de Pau et des Pays de l’Adour, 64000 Pau, France
Mohammad Sadr: LaTEP, E2S UPPA, Universite de Pau et des Pays de l’Adour, 64000 Pau, France
Sabine Sochard: LaTEP, E2S UPPA, Universite de Pau et des Pays de l’Adour, 64000 Pau, France
Sylvain Serra: LaTEP, E2S UPPA, Universite de Pau et des Pays de l’Adour, 64000 Pau, France
Jean-Michel Reneaume: LaTEP, E2S UPPA, Universite de Pau et des Pays de l’Adour, 64000 Pau, France
Energies, 2023, vol. 16, issue 3, 1-20
Abstract:
To continue improving the integration of solar thermal in district heating networks, optimization tools that can study both sizing and operation of heating plants are needed. In this article, the ISORC tool was used to study the sizing and coupled operation of smaller storage and solar fields with other heating sources such as biomass and gas boilers. For this, a k-medoids algorithm was applied to select consecutive characteristic days to size the system based on an optimal operation of consecutive days in the same season. The formulated problem was nonlinear, and the objective function to be minimized was the total cost. Two case studies with different day constructions and distributions were studied with various sensitivity analysis. The formulation and methodology allowed us to study different cases and situations easily and proved the importance of the selection and attribution of typical days. In all cases, the results showed that even with a daily approach, solar thermal covers approximately 20% of the demand, which demonstrates the relevance of considering and developing small daily storage with small solar fields.
Keywords: solar thermal energy; district heating networks; multi-sources; economic nonlinear optimization; typical days (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:16:y:2023:i:3:p:1335-:d:1048059
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