Augmenting the Heat Transfer Performance of Rotating Two-Phase Thermosyphons
Abstract
A Nusselt-type analysis was performed for laminar film condensation on the inside of a truncated rotating cone. Studies of this model revealed that the heat transfer capacity of the rotating thermosyphon was controlled by three thermal resistances; the condensate film thickness, condenser wall resistance, and the extermal heat transfer coefficient. A parametric study of the solution was performed for various values of these resistances and methods for reducing them were investigated. A stainless steel thermosyphon was tested using various working fluids. A copper thermosyphon was constructed and tested using water. Different power levels and speeds of rotation were investigated. Longitudinal grooving was studied as a means of reducing the heat transfer resistance of the internal condenser surface. An analytical model was developed for a triangular groove profile and a parametric analysis performed to show effects on heat transfer capabilities.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1972
- Accession Number
- AD0758513
Entities
People
- Carl Edward Schafer Ii
Organizations
- Naval Postgraduate School