Share

BOILING HEAT TRANSFER IN VERTICAL SUPERFLUID HELIUM CHANNEL.

[In Japanese. / En japonais.]

Author(s) : OKAMURA T., SAGAWA Y., YOSHIZAWA Y.

Type of article: Article

Summary

IN THE BOILING STATE, THE HEAT REMOVED THROUGH THE UPPER SIDE OF THE CHANNEL INCREASES WITH THE INCREASE OF INPUT POWER TO THE HEATER, WHILE THE HEAT REMOVED THROUGH THE LOWER SIDE OF THE CHANNEL IS KEPT CONSTANT. A TEMPERATURE RISE IN THE CHANNEL WHEN THE ASPECT RATIO OF THE CHANNEL CROSS SECTION IS 1, IS SMALLER THAN THAT WHEN THE ASPECT RATIO OF 7 AFTER HELIUM II TO HELIUM I TRANSITION OCCURS. THE CRITICAL VALUES OF HEAT FLOW AT WHICH HELIUM II TO HELIUM I, AND NUCLEATE BOILING TO FILM BOILING, TRANSITIONS OCCUR IN THE VICINITY OF THE HEATER SURFACE IN THIS CHANNEL, ARE LARGER THAN THOSE IN A CHANNEL CLOSED AT THE BOTTOM, RESPECTIVELY.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1991-0590
  • Languages: Japanese
  • Source: Cryogenics/ Cryog. Eng. - vol. 25 - n. 4
  • Publication date: 1990
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles in this issue (2)
See the source

Indexing