IECM 12.0 beta User Manual > Modules Included with the IECM > Integrated Gasification Combined Cycle (IGCC) Plant > SET PARAMETERS > Air Separation Unit >

Retrofit or Adjustment Factors

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Inputs for the capital costs of modifications to process areas of the Air Separation Unit (ASU) are entered on the Retrofit or Adjustment Factors parameter screen. This screen is shown for IGCC plants and oxyfuel systems in PC plants . See Retrofit or Adjustment Factor Inputs for an explanation of retrofit costs. The ASU has the following capital cost process areas:

•Air Separation Unit: The retrofit factor is a ratio of the costs of retrofitting an existing facility with an air separation unit versus a new facility, using the same equipment.

•Final Oxidant Compression: The final oxidant may need to be compressed to a higher pressure than 20psia. This typically applies to IGCC plants.