Abstract
Hybrid solar thermal power plants using the Brayton cycle are currently of great interest as they have proven to be technically feasible. This study evaluates mechanisms to reduce fuel consumption and increase the power generated, improving plant efficiency. An energy and exergy model for the hybrid solar plant is developed using an estimation model for the solar resource to determine the plant operation under specific environmental conditions. The effect of using different working fluids in the Brayton cycle, such as air, and helium in transcritical conditions and carbon dioxide in subcritical and supercritical conditions, is evaluated. Additionally, the plant’s exergy destruction and exergy efficiency are evaluated. In those, it can be highlighted that the helium cycle in the same operating conditions compared to other working fluids can increase the power by 160%, increasing fuel consumption by more than 390%.
| Original language | English |
|---|---|
| Article number | 9479 |
| Journal | Sustainability (Switzerland) |
| Volume | 14 |
| Issue number | 15 |
| DOIs | |
| State | Published - Aug 2022 |
Bibliographical note
Publisher Copyright:© 2022 by the authors.
Keywords
- Brayton cycle
- concentrated solar power
- exergy analysis
- hybrid solar thermal power plant hybrid
- working fluid selection
Types Minciencias
- Artículos de investigación con calidad A1 / Q1
