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Energy Conversion Alternatives Study (ECAS)ECAS compared various advanced energy conversion systems that can use coal or coal-derived fuels for baseload electric power generation. It was conducted in two phases. Phase 1 consisted of parametric studies. From these results, 11 concepts were selected for further study in Phase 2. For each of the Phase 2 systems and a common set of ground rules, performance, cost, environmental intrusion, and natural resource requirements were estimated. In addition, the contractors defined the state of the associated technology, identified the advances required, prepared preliminary research and development plans, and assessed other factors that would affect the implementation of each type of powerplant. The systems studied in Phase 2 include steam systems with atmospheric- and pressurized-fluidized-bed boilers; combined cycle gas turbine/steam systems with integrated gasifiers or fired by a semiclean, coal derived fuel; a potassium/steam system with a pressurized-fluidized-bed boiler; a closed-cycle gas turbine/organic system with a high-temperature, atmospheric-fluidized-bed furnace; a direct-coal-fired, open- cycle magnetohydrodynamic/steam system; and a molten-carbonate fuel cell/steam system with an integrated gasifier. The sensitivity of the results to changes in the ground rules and the impact of uncertainties in capital cost estimates were also examined.
Document ID
19780016716
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Date Acquired
September 3, 2013
Publication Date
September 1, 1977
Subject Category
Energy Production And Conversion
Report/Patent Number
NASA-TM-73871
E-8596
Accession Number
78N24659
Funding Number(s)
PROJECT: RTOP 778-11
CONTRACT_GRANT: E(49-18)-1751
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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