Optimizing CO2 avoided cost by means of repowering

Jesús M. Escosa and Luis M. Romeo

Applied Energy, 2009, vol. 86, issue 11, 2358 pages

Abstract: Repowering fossil fuel power plants by means of gas turbines has been traditionally considered to increase power output and reduce NOx and SO2 emissions both at low cost and short outage periods. At present, reduction in CO2 emissions represents an additional advantage of repowering due to partial fuel shift and overall efficiency increase. This is especially important in existing installations with a CO2 reduction mandatory that should be carried out in a short time and in a cost-effective manner. Feedwater and parallel repowering schemes have been analysed using thermodynamic, environmental and economic simulations. The objective is not only to evaluate the cost of electricity and the efficiency increase of the overall system, but calculate and minimize the cost of CO2 avoided as a function of gas turbine power output. It seems that integration of larger gas turbines reduces the overall CO2 emissions, but there is a compromise between CO2 reduction due to fuel shift and a optimum integration of waste heat into the power plant to minimize the CO2 avoided costs. Results highlight the repowering as a suitable technology to reduce 10-30% of CO2 emissions in existing power plants with cost well below 20Â [euro]/tCO2. It could help to control emissions up to the carbon capture technologies commercial development.

Keywords: Repowering; CO2; emissions; Energy; optimization; Energy; integration (search for similar items in EconPapers)
Date: 2009
References: View complete reference list from CitEc
Citations: View citations in EconPapers (15)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306-2619(09)00072-5
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:appene:v:86:y:2009:i:11:p:2351-2358

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

Access Statistics for this article

Applied Energy is currently edited by J. Yan

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