Investigation and Analysis of the Operating Limits in the Two-Phase Closed Thermosyphon
Date Issued
2012
Date
2012
Author(s)
Kuan, Szu-Chi
Abstract
The rmosyphons are also called gravity-supported heat pipes. They are highly efficient heat transfer elements which become increasingly applied in terrestrial heat transport and heat recovery system. Their performance is limit by various heat transport limitations. When thermosyphons work at high temperature , the maximum operating heat transfer rates for two-phase closed thermosyphons due to entrainment limitation or boiling limitation. And these limitations will affect the heat transfer performance. Experiments with three copper water thermosyphons, which are 130mm、200mm、300mm long respectively and 7mm outer diameter have been carried out. According to the error analysis, the error between the boiling limitation measured by experiment and the prediction by theory is 8.7 percentage, and the average error of entrainment limitation between experiment and theory is 6.7 percentage. We can take the result of this experiment as standard when we use the other size of thermosyphons to measure the operating limit limits in the future, and predict by the programs.
Subjects
Two-Phase Closed Thermosyphon
Boiling limitation
Entrainment limitation
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
index.html
Size
23.49 KB
Format
HTML
Checksum
(MD5):f44cee95e8d345d905d59533a1995002