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On the off-design of a natural gas-fired combined cycle with CO2 capture

Fredriksson Möller, Björn LU ; Genrup, Magnus LU and Assadi, Mohsen LU (2005) 18th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2005) In Proceedings of Ecos 2005, Vols 1-3 - Shaping our future energy systems p.811-818
Abstract
During the last 15 years cycles with CO2 capture have been in focus, due to the growing concern over our climate. Often a natural-gas fired combined cycle with a chemical absorption plant for CO2 capture from the flue gases have been used as a reference in comparisons between cycles. The integration of the steam production in the cycle to minimise the drop in efficiency have not been extensively studied. Neither have there been any studies on the off-design behaviour of such a plant if it should be built. In this paper the integration of steam production for regeneration of the amines is modelled at design load and studied in off-design conditions for a combined cycle. Different ambient conditions and part-load strategies and their... (More)
During the last 15 years cycles with CO2 capture have been in focus, due to the growing concern over our climate. Often a natural-gas fired combined cycle with a chemical absorption plant for CO2 capture from the flue gases have been used as a reference in comparisons between cycles. The integration of the steam production in the cycle to minimise the drop in efficiency have not been extensively studied. Neither have there been any studies on the off-design behaviour of such a plant if it should be built. In this paper the integration of steam production for regeneration of the amines is modelled at design load and studied in off-design conditions for a combined cycle. Different ambient conditions and part-load strategies and their influence on the cycle performance are also examined. Of particular interest is a novel strategy with the possibility of longer life of gas turbine blading, with marginal loss in efficiency. The off-design performance of the combined cycle is modelled in a rigorous way, using a gas turbine performance deck to calculate the performance of the gas turbine. The boiler is calculated using simplified correlations for off-design heat transfer and pressure drop. The steam turbine calculation is based on verified models for the flow - pressure - efficiency relations, whilst the steam condenser is based on the HEI (Heat Exchange Institute) method. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
CO2 capture, combined cycles, off-design
in
Proceedings of Ecos 2005, Vols 1-3 - Shaping our future energy systems
pages
811 - 818
publisher
Norwegian University of Science and Technology
conference name
18th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2005)
external identifiers
  • WOS:000232156000100
  • Scopus:84924359873
ISBN
8251920418
language
English
LU publication?
yes
id
cbe71847-90c7-491b-a69e-7026705ae887 (old id 1406444)
date added to LUP
2009-06-05 09:38:20
date last changed
2016-10-13 04:50:32
@misc{cbe71847-90c7-491b-a69e-7026705ae887,
  abstract     = {During the last 15 years cycles with CO2 capture have been in focus, due to the growing concern over our climate. Often a natural-gas fired combined cycle with a chemical absorption plant for CO2 capture from the flue gases have been used as a reference in comparisons between cycles. The integration of the steam production in the cycle to minimise the drop in efficiency have not been extensively studied. Neither have there been any studies on the off-design behaviour of such a plant if it should be built. In this paper the integration of steam production for regeneration of the amines is modelled at design load and studied in off-design conditions for a combined cycle. Different ambient conditions and part-load strategies and their influence on the cycle performance are also examined. Of particular interest is a novel strategy with the possibility of longer life of gas turbine blading, with marginal loss in efficiency. The off-design performance of the combined cycle is modelled in a rigorous way, using a gas turbine performance deck to calculate the performance of the gas turbine. The boiler is calculated using simplified correlations for off-design heat transfer and pressure drop. The steam turbine calculation is based on verified models for the flow - pressure - efficiency relations, whilst the steam condenser is based on the HEI (Heat Exchange Institute) method.},
  author       = {Fredriksson Möller, Björn and Genrup, Magnus and Assadi, Mohsen},
  isbn         = {8251920418},
  keyword      = {CO2 capture,combined cycles,off-design},
  language     = {eng},
  pages        = {811--818},
  publisher    = {ARRAY(0x8b4ae18)},
  series       = {Proceedings of Ecos 2005, Vols 1-3 - Shaping our future energy systems},
  title        = {On the off-design of a natural gas-fired combined cycle with CO2 capture},
  year         = {2005},
}