Transient CFD simulation of charging hot water tank
Authors:
- Piotr Dzierwa,
- Jan Taler,
- Patryk Peret,
- Dawid Taler,
- Marcin Trojan
Abstract
This paper presents characteristics of heat accumulation system operation in one of the Polish combined heat and power (CHP) plants. The heat source cooperating with this installation is cogeneration units consisting of gas engines with a total heat output of 8 MWt and total electrical power of 8 MWe. The total thermal capacity of the non-pressure hot water accumulator is 75 MWh. An important issue in the case of hot water tanks is thermal stratification caused by the difference in density between higher-temperature water, located at the top of the hot water storage tank and colder water at its bottom. The article presents the results of numerical analysis based on the axial-symmetric model of a hot water tank using Ansys Fluent R19.2 software. Simulations with the Computational Fluid Dynamics (CFD) method were carried out for the process of charging the heat accumulator lasting 10 h. The effect of mesh density on the obtained results was analysed. The results were compared with the measurement data from the CHP plant. Heat losses from the hot water tank were compared with the measurement data from the CHP plant. Heat losses from the hot water tank were taken into account and the density characteristics of the heat flux lost to the environment were presented.
- Record ID
- CUTf6a87bd259e94d6286a6e0ca067a3782
- Publication categories
- ;
- Author
- Journal series
- Energy, ISSN 0360-5442, e-ISSN 1873-6785
- Issue year
- 2022
- Vol
- Vol. 239, Part C
- Pages
- [1-11]
- Article number
- 122241
- Other elements of collation
- rys.; schem.; tab.; wykr.; Bibliografia (na s.) - 11; Bibliografia (liczba pozycji) - 31; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 239, Part C
- Substantive notes
- Articles from the Special Issue on EFE2020; Edited by Wojciech Stanek, Suwala Wojciech, Leszczynski Jacek
- Keywords in English
- thermal stratification, hot water tank, CFD modelling, energy storage
- ASJC Classification
- ;
- DOI
- DOI:10.1016/j.energy.2021.122241 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/abs/pii/S0360544221024890 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 200
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTf6a87bd259e94d6286a6e0ca067a3782/
- URN
urn:pkr-prod:CUTf6a87bd259e94d6286a6e0ca067a3782
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.