Second generation heliostat development for solar central receiver systems

ABSTRACT:
This report presents the results obtained in the development of a second generation heliostat by Northrup, Incorporated under Sandia Laboratories contract 83-2729E during the period July 16, 1979 through March 31, 1981. Northrup, Incorporated, a subsidiary of Atlantic Richfield Company, is

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headquartered at 302 Nichols Drive, Hutchins, Texas, 75141 and has offices at Suite 306, 7061 South University Blvd., Littleton, Colorado, 80122. Work relating to this project was performed at both locations. The report includes contributions by Northrup's major subcontractors, Booz-Allen and Hamilton for portions of the Manufacturing subtask and Bechtel National for the Field Assembly and Installation subtask. The report covers the results obtained in the program which includes the design of the second generation heliostat, the development of the manufacturing plan, the method of transporting the heliostat components from the factory to the installation site, heliostat field assembly and installation procedures, and the maintenance routines. These plans are then cost estimated to provide inputs required to develop the installed cost of the heliostat and further, the cost of owning, operating and maintaining a collector field which utilizes these heliostats. Two prototype heliostats which were representative of production hardware were constructed. Some initial testing was performed at Northrup's Hutchins site prior to delivery to Sandia's Central Receiver Test Facility at Albuquerque, New Mexico for further evaluation by Sandia Laboratories. The results of the Northrup test program are contained in this report. The report is presented in four volumes. Volumes I and II includes all the technical presentations and Volumes III and IV contain back-up appendices.

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