| Issue |
E3S Web Conf.
Volume 608, 2025
EU-CONEXUS EENVIRO Research Conference - The 9th Conference of the Sustainable Solutions for Energy and Environment (EENVIRO 2024)
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|---|---|---|
| Article Number | 01014 | |
| Number of page(s) | 8 | |
| Section | Energy | |
| DOI | https://doi.org/10.1051/e3sconf/202560801014 | |
| Published online | 22 January 2025 | |
Numerical study of a horizontal shower water heat recovery system
1 STHPA department, Faculty of Building Services, Technical University of Civil Engineering Bucharest, Romania
2 STHPA department, Faculty of Building Services, Technical University of Civil Engineering Bucharest, Romania
* Corresponding author: dragos-marian.purghel@phd.utcb.ro
The objective of this work is to numerically study the performance of a drain water heat recovery (DWHR) device prototype intended for small shower trays. The numerical model is based on Computational Fluid Dynamics (CFD) approach. The simulations were performed for unbalanced and balanced configurations in terms of waste water flow rate and cold water flow rate. The results achieved show that the thermal effectiveness of the proposed DWHR system is between 15-27% and the Number of Transfer Units (NTU) is among 17-37%, with higher values for the unbalanced configuration. Based on these values, it can be concluded that the designed DWHR unit leads to satisfactory results considering cost-effectiveness reasons and maintenance.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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