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Estimation of exergy-based sustainability index and performance evaluation of a novel intercooled hybrid gas turbine system.
- Source :
-
International Journal of Hydrogen Energy . Mar2023, Vol. 48 Issue 23, p8629-8644. 16p. - Publication Year :
- 2023
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Abstract
- This paper contributes a novel sustainability index and modified exergy indicators for conventional gas turbines and solid oxide fuel cell integrated gas turbine (SOFC-GT) hybrid power cycles. In this work, an intercooled gas turbine (Ic-GT) cycle is considered as a base cycle, which gives an additive advantage in lowering the power required for the compressor. Moreover, on SOFC integration with Ic-GT, the qualitative and quantitative performance are examined. Numerical modeling is done using MATLAB and an exclusive comparison has been made based on energy-exergy and sustainability analysis for the system and its components. On comparing the first law efficiency at turbine inlet temperature, TIT 1250K and rp = 18 for Ic-GT, intercooled recuperated gas turbine (Ic-RGT), and Ic–SOFC–RGT, it is 25.82%, 36.04%, and 64.78%, respectively. Similarly, second law efficiency is 11.43%, 22.33%, and 61.11% and the overall sustainability index is 1.12, 1.28, and 2.57 for Ic-GT, Ic-RGT, and Ic–SOFC–RGT, respectively. Nine other modified exergy-based parameters are used to identify the role of fuel and product exergy and then compare the most affected component in three configurations. [Display omitted] • Gas turbine exhaust waste heat has been examined to power fuel cell. • Two typical intercooled gas turbines and a fuel-cell hybrid system are compared. • Energy efficiency, exergy efficiency, sustainability index are compared. • Configurations are compared using nine modified exergetic performance indicators. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GAS turbines
*SOLID oxide fuel cells
*HYBRID systems
*HYBRID power
*SUSTAINABILITY
Subjects
Details
- Language :
- English
- ISSN :
- 03603199
- Volume :
- 48
- Issue :
- 23
- Database :
- Academic Search Index
- Journal :
- International Journal of Hydrogen Energy
- Publication Type :
- Academic Journal
- Accession number :
- 161939734
- Full Text :
- https://doi.org/10.1016/j.ijhydene.2022.10.260