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doc#118 | determine its temperature. </p><p> Another | anode | holder used in the experiments is shown |
doc#118 | is shown in figure 3. In this design the | anode | holder is water cooled and the heat losses |
doc#118 | and the heat losses by conduction from the | anode | were determined by measuring the temperature |
doc#118 | reduce heat transfer from the hot has to this | anode | holder outside the regime of the arc, a |
doc#118 | between the plate and the surface of the | anode | holder. In addition, the inner surface |
doc#118 | shield and of the surface of the water-cooled | anode | holder were measured by thermocouples to |
doc#118 | the coolant but not originating from the | anode | plug. </p><p> The argon flow from commercial |
doc#118 | voltmeter whose terminals were connected to the | anode | and cathode holders. Because of the falling |
doc#118 | COOLED ANODE WITH CARBON ANODE HOLDER The | anode | holder shown in figure 2 was designed with |
doc#118 | 100 Amp. The argon flow through the porous | anode | was varied systematically between <formul> |
doc#118 | flow rates the arc started to strike to the | anode | holder instead of to the porous graphite |
doc#118 | difficulty of measuring the characteristic | anode | surface temperature (see below) since only |
doc#118 | below) since only a small region of the | anode | was struck by the arc. This region which |
doc#118 | higher temperature than the rest of the | anode | surface changed size and location continuously |
doc#118 | To measure the surface temperature of the | anode | plug, the surface was scanned with a pyrometer |
doc#118 | Assuming thermal equilibrium between the | anode | surface and the transpiring argon, the |
doc#118 | argon, the gas enthalpy rise through the | anode | was calculated according to the relation |
doc#118 | and arc voltages. Simultaneously with the | anode | surface temperature and voltage measurements |
doc#118 | along the cylindrical surface of the carbon | anode | holder as indicated on figure 2. Some of |
doc#118 | as environmental temperature to which the | anode | holder was exposed as far as radiation |