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A solar thermal electric power plant for small communitiesA solar power plant has been designed with a rating of 1000-kW electric and a 0.4 annual capacity factor. It was configured as a prototype for plants in the 1000 to 10,000-kWe size range for application to small communities or industrial users either grid-connected or isolated from a utility grid. A small central receiver was selected for solar energy collection after being compared with alternative distributed collectors. Further trade studies resulted in the selection of Hitec (heat transfer salt composed of 53 percent KNO3, 40 percent NaNO2, 7 percent NaNO3) as both the receiver coolant and the sensible heat thermal stroage medium and the steam Rankine cycle for power conversion. The plant is configured with road-transportable units to accommodate remote sites and minimize site assembly requirements. Results of the analyses indicate that busbar energy costs are competitive with diesel-electric plants in certain situations, e.g., off-grid, remote regions with high insolation. Sensitivity of energy costs to plant power rating and system capacity factor are given.
Document ID
19800034414
Document Type
Conference Paper
Authors
Holl, R. J. (McDonnell Douglas Astronautics Co. Huntington Beach, Calif., United States)
Date Acquired
August 10, 2013
Publication Date
December 1, 1979
Subject Category
ENERGY PRODUCTION AND CONVERSION
Report/Patent Number
ASME PAPER 79-WA/SOL-7
Meeting Information
Winter Annual Meeting(New York, NY)
Distribution Limits
Public
Copyright
Other