Reducing CO2 emission and improving exergy based performance of natural gas fired combined cycle power plants by coupling Kalina cycle

Omendra Kumar Singh and Subhash C. Kaushik

Energy, 2013, vol. 55, issue C, 1002-1013

Abstract: This paper presents second law analysis of a combined triple power cycle. The Brayton–Rankine combined cycle of a natural gas fired power plant situated in India and the Kalina cycle of Orkuveita Húsavíkur geothermal power plant in Husavik, Iceland were considered. These cycles were simulated in MATLAB and the simulated results were compared with the actual results to validate the simulation. These cycles were then combined and the performance of the resulting triple cycle was evaluated according to Indian atmospheric conditions to investigate the possibility of using Kalina cycle system in India. A significant performance improvement and reduction in CO2 emission was found. With the same fuel consumption, the net power output was found to increase by about 1.27%, the thermal efficiency by 0.54% and the exergy efficiency by 0.51%. To generate the same additional power by the Brayton–Rankine combined cycle alone, an additional 1.24% of natural gas would be burned which would increase the CO2 emission into the atmosphere by 1.24%. The effects of topping cycle pressure ratio, inlet air temperature and relative humidity on the triple cycle performance were also studied and the cycle was optimized with respect to the pressure ratio.

Keywords: Ammonia-water mixture properties; Combined cycle power plant; Triple power cycle; Kalina cycle; Exergy; Simulation (search for similar items in EconPapers)
Date: 2013
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (10)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544213003150
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:55:y:2013:i:c:p:1002-1013

DOI: 10.1016/j.energy.2013.04.015

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().