Use of a low-cost phase change material emulsion in de-centralized thermal energy storage for district heating network enlargement
Rinaldi, Giulia ; Lázaro, Ana (Universidad de Zaragoza) ; Delgado, Mónica ; Marín, José María (Universidad de Zaragoza) ; Verda, Vittorio
Resumen: A detailed heat transfer model of a storage tank was developed to assess the performance of a district heating system with de-centralized storage solutions. The performance of two cases, with water and a low-cost phase change material emulsion as storage medium was analysed for 40 residential buildings in Zaragoza (Spain). The chosen configuration is a typical cylindrical tank with internal coils through which the district heating water flows for the charge and discharge. This decentralized thermal energy storage unit reduced peak demand and mass flow in the network, allowing additional buildings to connect to a saturated grid. Four configurations were examined: (1) A 180 m3 water tank reduced district heating power demand by 36.6 %. (2) The same 180 m3 tank using the emulsion required fewer coils, lowering costs, stabilizing TES temperature, and increasing water supply temperature, thus extending system lifespan. (3) A 130 m³ tank with the emulsion offered operational characteristics similar to the water tank, with economic and structural benefits from reduced size. (4) An 180 m³ optimised tank with the emulsion achieved a 38.8 % reduction in district heating power demand. These configurations demonstrate the efficiency and cost-effectiveness of using phase change material emulsion in thermal energy storage systems.
Idioma: Inglés
DOI: 10.1016/j.energy.2024.132517
Año: 2024
Publicado en: Energy 306 (2024), 132517 [11 p.]
ISSN: 0360-5442
Financiación: info:eu-repo/grantAgreement/ES/AEI/PID2020-115500RB-I00
Financiación: info:eu-repo/grantAgreement/ES/DGA/T55-20R
Tipo y forma: Article (Published version)
Área (Departamento): Área Máquinas y Motores Térmi. (Dpto. Ingeniería Mecánica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
Exportado de SIDERAL (2024-09-06-10:25:15)
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Idioma: Inglés
DOI: 10.1016/j.energy.2024.132517
Año: 2024
Publicado en: Energy 306 (2024), 132517 [11 p.]
ISSN: 0360-5442
Financiación: info:eu-repo/grantAgreement/ES/AEI/PID2020-115500RB-I00
Financiación: info:eu-repo/grantAgreement/ES/DGA/T55-20R
Tipo y forma: Article (Published version)
Área (Departamento): Área Máquinas y Motores Térmi. (Dpto. Ingeniería Mecánica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2024-09-06-10:25:15)
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Record created 2024-09-06, last modified 2024-09-06