Off-Design Performance of Power Plants: An Integrated Gasification Combined-Cycle Example

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Science  24 Jul 1987:
Vol. 237, Issue 4813, pp. 379-383
DOI: 10.1126/science.237.4813.379


Fossil-fueled power plants typically operate below their design capacities for a large fraction of their service life. In the United States, increased fuel and capital costs attributable to this off-design operation are considerable. This article describes the reasons for off-design operation and its importance in designing and selecting new power plants. Recent studies of coal gasification combined-cycle power plants show how computer simulations of off-design performance can aid in the design process, and they suggest that such simulations can be useful in reducing the cost of building and operating new power plants.