The ground impact on the ultra-low- and low-temperature district heating operation

Oktawia Dolna and Jarosław Mikielewicz

Renewable Energy, 2020, vol. 146, issue C, 1232-1241

Abstract: According to the latest trends in the district heating field, new technologies and solutions are being implemented aiming at lower heating medium supply temperature introduction. This paper presents the implementation the Ultra-Low- and Low-Temperature District Heating (UL-L- TDH) and the ground thermal energy storage (GTES). The GTES is localised in the UL-L- TDH distribution pipes surrounding. In the paper there have been estimated the internal and external thermal energy balances of a system including the heat supplier, the heat consumer and the UL-L- TDH distribution pipes. A simple mathematical model of the system mentioned above was prepared and solved numerically using Mathcad environment. Additionally, CFD studies have been carried out to visualise the temperature field in the GTES. Accordingly, the influence of the GTES on the Ultra-Low- and Low-Temperature District Heating operation was estimated. Additionally, basing on the CFD results the proper supply/return mutual distance was defined.

Keywords: Ultra-low- and low-temperature district heating; CFD (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:146:y:2020:i:c:p:1232-1241

DOI: 10.1016/j.renene.2019.07.048

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