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Electronic Resource
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SAND Report: SAND77-8283, December 1977.
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Library's review
ABSTRACT:
This study is a theoretical investigation of the highcycle fatigue damage that may result from temperature oscillatipns in the boiler tube wall around the location of the point of departure from nucleate boiling (DNB) in the McDonnell Douglas Rocketdyne receiver subsystem for the pilot and
This study is a theoretical investigation of the highcycle fatigue damage that may result from temperature oscillatipns in the boiler tube wall around the location of the point of departure from nucleate boiling (DNB) in the McDonnell Douglas Rocketdyne receiver subsystem for the pilot and
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commercial solar power plants. The problem was analyzed using the SAHARA and HEATMESH heat transfer codes and the GNATS structural analysis code. For lack of better information, several rather sweeping assumptions have been made concerning the nature of the flow near the DNB point to allow the thermal calculations to be made. The results of the structural analysis show that fatigue damage due to DNB oscillations will not be a substantial problem in the pilot plant, but may cause a significant reduction in the life of the commercial receiver. It has been found, however, that the results are highly dependent on the nature of the internal flow characteristics, pointing to the need for further investigation of DNB oscillations so that the accuracy of the current assumptions may be verified. Show Less