X-ray Observations of Flow Patterns in a Mercury Boiler |
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Page 1
... swirling device that helped separate the liquid phase into an essentially helical streamlet flowing in con- tact with the boiler wall . There were long periods of stable operation during which X - ray observations showed good separation ...
... swirling device that helped separate the liquid phase into an essentially helical streamlet flowing in con- tact with the boiler wall . There were long periods of stable operation during which X - ray observations showed good separation ...
Page 21
... swirling device was required throughout the boiler ( see appendix B ) . This requirement applies particularly if the boiler material is one that is not readily wetted by mercury . In this case , it is necessary to force intimate ...
... swirling device was required throughout the boiler ( see appendix B ) . This requirement applies particularly if the boiler material is one that is not readily wetted by mercury . In this case , it is necessary to force intimate ...
Page 25
... swirling devices greatly enhance phase separation . Without some kind of swirling device , appre- ciable liquid carryover was found in previous boilers examined by X - ray . In the boiler described herein , shallow helical grooves in ...
... swirling devices greatly enhance phase separation . Without some kind of swirling device , appre- ciable liquid carryover was found in previous boilers examined by X - ray . In the boiler described herein , shallow helical grooves in ...
Common terms and phrases
adiabatic appendix axially Baker chart boiler exit boiler inlet boiler insert zone Boiler satura boiler surface boiler wall boiler-superheater boiling bubbles centrifugal forces cm/sec condensate column corrosion results corrosive attack downstream droplets figure 11 flow and pressure flow conditions FLOW PATTERN OBSERVATIONS flow pattern regime Flowmeter pressure drop gas flow heat flux heater element helical groove helical liquid helical stream helical streamlet Inlet pressure Insert cylinder kg/sec Lewis Research Center liquid carryover liquid film terminal liquid mercury liquid phase liquid streamlet mass flow rate mercury loop metastable intervals metastable oscillations motion picture N/m² abs NASA NASA TN nucleation zone observed flow patterns oscillations and excursions phase separation pounds per hour Preheater psia pump radial acceleration saturation pressure shown in figure Slug stratified flow superheater surface tension swirling device tangential velocity thermocouples two-phase flow two-phase inception vapor quality vapor throttle wall contact wave X-ray image system X-ray system