Abstract
The rigorous assessment of thermal characteristics of power plants is important for the cost-effective operations. Thermodynamic analysis of the first- and the second-law efficiencies can be merged through the irreversibility ratio (IR = T0Sgen/QH), which provides useful information on the thermal system characteristics and reduces the efforts for the thermal analysis. In this study, thermodynamic analysis of a power plant is carried out and the first- and the second-law efficiencies are formulated simultaneously incorporating the irreversibility ratio. The maximum output power and the maximum first- and second-law efficiencies are formulated. The effect of temperature ratio and irreversibility ratio on the output power as well as the first- and the second-law efficiencies is investigated. It is found that the influence of the irreversibility ratio is higher on the second-law efficiency than that of the first-law efficiency, which is more pronounced at low values of the temperature ratio (θ< 0.6).
| Original language | English |
|---|---|
| Pages (from-to) | 356-366 |
| Number of pages | 11 |
| Journal | International Journal of Exergy |
| Volume | 18 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2015 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2015 Inderscience Enterprises Ltd.
Keywords
- Irreversibility ratio
- Power plants
- Second-law efficiency