Screw extruder for solid hydrogen
| ISSN: |
1090-6525
|
|---|---|
| Source: |
Springer Online Journal Archives 1860-2000
|
| Topics: |
Physics
|
| Notes: |
Abstract The first screw extruder capable of continuously forming macroscopic solid hydrogen particles to be injected into the plasma of thermonuclear devices was created and successfully tested. A model of nonisothermal hydrogen flow in the screw channel was developed and used to calculate the extruder efficiency as a function of the system parameters. The results of calculations and experimental data are presented for the extrusion of 500 cm3 of solid hydrogen using an extruder with a working volume of 8 cm3 operating at a rate of 63 mm3/s. Temperature dependences of the viscosity and shear strength of solid hydrogen were studied in the temperature interval from 10 to 13 K, where solid hydrogen behaves like a Bingham fluid.
|
| Type of Medium: |
Electronic Resource
|
| URL: |