| Issue |
E3S Web Conf.
Volume 459, 2023
XXXIX Siberian Thermophysical Seminar (STS-39)
|
|
|---|---|---|
| Article Number | 07009 | |
| Number of page(s) | 4 | |
| Section | Thermophysical Problems of Energetics, Energy Efficiency and Energy Saving | |
| DOI | https://doi.org/10.1051/e3sconf/202345907009 | |
| Published online | 04 December 2023 | |
Influence of external supply of low-grade heat on thermal efficiency of sCO2 power cycles
1 NSTU, Department of Thermal Power Plants, 630073, Novosibirsk, Russia
2 IT SB RAS, Laboratory of Ecological Problems of Thermal Power Engineering, 630090, Novosibirsk, Russia
* Corresponding author: sadkinvanya@mail.ru
The effect of supply of additional external low-grade heat on overall thermodynamic efficiency is considered using the example of a cycle with a two-stage pressure increase by a compressor and a pump (by analogy with the Allam cycle). The influence of the cycle architecture in terms of organizing the heat fluxes in the pressure boosting system on thermal efficiency is also considered. The analysis is performed in a wide range of initial parameters. It has been determined that an increase in the CO2 temperature at the inlet to the main regenerator due to the supply of external low-grade heat for every 25°C leads to an increase in the cycle efficiency by 2%.
© The Authors, published by EDP Sciences, 2023
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.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.