TRNSYS Model of District Heating System used as Heat Storage for Decentralized Solar Thermal Collectors

18th Conference of Building Simulation (IBPSA 2023): Proceedings 2023
Raimonds Bogdanovičs, Jurģis Zemītis, Aleksandrs Zajacs

This study presents a TRNSYS model of a district heating system utilizing decentralized solar thermal collectors as its heat source. The model investigates the impact of pipeline diameters and lengths on system energy efficiency, as well as the effect of changing heating load demand profiles. Larger diameters and optimal length (not the shortest) between buildings improve energy efficiency by utilizing the storage potential of district heating pipelines. Changes in heating load demand profiles affect the received energy from the grid, resulting in up to a 10% difference, although no clear correlation was observed. The model allows for monitoring temperature changes in pipeline points, providing useful information for system optimization.

Keywords
Solar thermal energy, District heating, Prosumers, Heat storage
DOI
10.26868/25222708.2023.1185
Hyperlink
https://publications.ibpsa.org/conference/paper/?id=bs2023_1185

Bogdanovičs, R., Zemītis, J., Zajacs, A. TRNSYS Model of District Heating System used as Heat Storage for Decentralized Solar Thermal Collectors. In: 18th Conference of Building Simulation (IBPSA 2023): Proceedings, China, Shanghai, 4-6 September, 2023. Shanghai: International Building Performance Simulation Association, 2023, pp.2430-2436. ISSN 2522-2708. Available from: doi:10.26868/25222708.2023.1185

Publication language
English (en)