Heat Transfer Performance of Various Rotating Heat Pipes.
Abstract
A rotating heat pipe was tested using various copper condenser configurations including two smooth-wall cylinders, an internally finned cylinder and a truncated cone. All condensers were tested with film condensation, and the truncated cone was also tested for dropwise condensation. Each condenser was tested at rotational speeds of 700, 1400 and 2800 RPM with distilled water as the working fluid. The heat transfer rate of each condenser was plotted against the saturation temperature of the vapor. The main objective was to compare the heat transfer rates obtained with the various condensers in order to identify an optimum configuration for future testing. In all cases, performance improved with increasing RPM. Dropwise condensation showed substantial improvement in performance relative to film condensation in the same condenser. Similarly, the performance of the internally finned cylindrical condenser was remarkably superior to that of the smooth-wall cylindrical condenser. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1976
- Accession Number
- ADA039375
Entities
People
- Lawrence Lee Wagenseil
Organizations
- Naval Postgraduate School