X-ray Observations of Flow Patterns in a Mercury Boiler |
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Page 3
... Figure 1. - Two - phase mercury loop . preheater , boiler , superheater , vapor throttle , condenser , condensate column , electro- dynamic mercury pump , and flowmeter . The arrangement of the loop components is shown in figure 1. The ...
... Figure 1. - Two - phase mercury loop . preheater , boiler , superheater , vapor throttle , condenser , condensate column , electro- dynamic mercury pump , and flowmeter . The arrangement of the loop components is shown in figure 1. The ...
Page 6
... Figure 5. - X - ray traverse and image system . venient X - ray viewing of boiling and condensing flow patterns ... shown in figure 6. The pitch of the helix was 1/8 inch ( 0.32 cm ) , and the inside diameter of the groove was slightly ...
... Figure 5. - X - ray traverse and image system . venient X - ray viewing of boiling and condensing flow patterns ... shown in figure 6. The pitch of the helix was 1/8 inch ( 0.32 cm ) , and the inside diameter of the groove was slightly ...
Page 7
... ( fig . 1 ) . Each heater element was made of strips of a nickel - chromium alloy ribbon . Each strip was formed into a half cylinder , and the half cylinders were clamped around the loop tube , as shown in figure 8. Alumina spacer rings ...
... ( fig . 1 ) . Each heater element was made of strips of a nickel - chromium alloy ribbon . Each strip was formed into a half cylinder , and the half cylinders were clamped around the loop tube , as shown in figure 8. Alumina spacer rings ...
Page 13
... represented by figure 10 ( a ) usually prevailed for several hours and sometimes for a period of 10 hours during times when the loop was unattended and manual adjustments could not be made . As shown in fig- ure 10 ( a ) , the flow rate ...
... represented by figure 10 ( a ) usually prevailed for several hours and sometimes for a period of 10 hours during times when the loop was unattended and manual adjustments could not be made . As shown in fig- ure 10 ( a ) , the flow rate ...
Page 18
... shown in figure 10 ( a ) . When the previously described perturbations in the liquid film terminal region oc- curred , the stratified helicoidal flow patterns in the upstream regimes remained unal- tered . However , these perturbations ...
... shown in figure 10 ( a ) . When the previously described perturbations in the liquid film terminal region oc- curred , the stratified helicoidal flow patterns in the upstream regimes remained unal- tered . However , these perturbations ...
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