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Accession Number:
AD0612248
Title:
ON THE OSCILLATORY BEHAVIOR OF NATURAL CIRCULATION SYSTEMS.
Corporate Author:
OKLAHOMA UNIV NORMAN
Report Date:
1965-01-01
Abstract:
The data observed and recorded lead to the following conclusions regarding the behavior of the natural circulation loop studied. 1 With no cooling flow in the downcomer coils and for a given power input, the larger the restricting orifice in the downcomer the more stable the flow in the loop. 2 With minimum cooling flow - that required to maintain the riser fluid at a p point just below its boiling temperature - and for a given power input, the smaller the restricting orifice the more stable the flow in the loop. 3 For a given power input, the smaller the restricting orifice in the downcomer the larger the difference in temperature between inlet and outlet to the heater. 4 Injecting air in the form of bubble streams at the bottom of the riser has been shown to have a subduing effect on oscillations peculiar to a natural circulation loop, and to allow the fluid to operate in a narrower range of temperatures of inlet and outlet. 5 The luminescent effect observed in the riser immediately before boiling requires a minimum though unknown amount of light incident on the riser tube. The effect was also observed to be pressuredependent. Author
Descriptive Note:
Master's thesis,
Pages:
0046
Contract Number:
AF33 608 1096
File Size:
0.00MB
