Heat Transfer Performance of a Two Phase Closed Corrugated Tube Thermosiphon.

Document Type : Research Studies

Author

Mechanical Power Engineering., Faculty of Engineering in Port Said., Suez Canal University., Egypt

Abstract

The two phase closed Thermosyphons are highly sufficient heat transfer  element At present. however, actual applications are mostly limited for  thermosyphon using smooth tube as its container. In the present work, a corrugated.  tube was used as its container with distilled water as the working fluid. The  corrugated tube container is flexible  and has several features to allow the  thermosyphon to be used in a wide range of applications The influence of liquid  filling ratio, inclination angle, evaporator heat flux and condenser to evaporator length  ratio on the heal transfer performance was experimentally studied The experiments  are carried out for values of heat flux of 11, 20,5. 32.8. 44 kW/m2, Filling ratios of  20,40.60, 80 and 100 % with respect to evaporator volume for thermosyphon  configuration arc used. The effect of inclination angle of zero, 20, 40, 60, 80 and 90  degrees measured from the vertical axis is examined. Three different values (or length  ratios between condenser to evaporator of I, 1.5 and 3 are used. According  to the  measured values of problem parameters, the mean heat transfer coefficient is  calculated. it is found that the optimum filling ratio is in the range o( 40-60 % for both  smooth and corrugated tubes. in addition, the maximum performance is Obtained at  inclination angle of 40 degree Moreover. a comparison is made between corrugated tube and smooth tube at the same tested parameters. 

Main Subjects

MEJ- Mansoura Engineering Journal
Volume 33, Issue 4
December 2008
Pages 15-24

Files

Share

How to cite

Statistics