Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

PRIMING AND FLOW VISUALIZATION IN THE DOUBLE WALL ARTERY HEAT PIPE

Get access (open in a dialog) DOI: 10.1615/IHTC8.4530
pages 3079-3084

Abstrakt

A glass enveloped 2 m long Double Wall Artery Heat Pipe (DWAHP) with water as the working fluid was fabricated and tested to facilitate interpretation of the previous 2 in conventional copper clad DWAHP test results. Artery groove priming and depriming conditions were visually observed. The hypothesized evaporator dryout problem by vapor back-flowing into the artery channels and instability conditions were observed and corrected by incorporating short capillary inserts in the artery channels at the transport/evaporator transition zone. An analysis of the liquid flow resistances in the various segments of the heat pipe wick structure is presented. The heat pipe, with glass outer wall, has proved to be an excellent device to help diagnose the problems related to the artery priming and vapor bubble/liquid flow performance limitations which otherwise are not readily observable.