Investigations of the factors affecting the performance of a rotating heat pipe
Abstract
The rotating heat pipe is a device which utilizes a two-phase heat-transfer cycle. Rotation about the longitudinal axis generates a centrifugal force field and a component of this acting along the tapered wall pumps the condensate back to the evaporator. A theoretical Nusselt type analysis is proposed for the condensate film taking into account the drag effects of contra-flowing vapor. A performance prediction relates rates of heat transfer, rotational speeds, temperature differences across condensate films, fluid properties and heat pipe geometry. Experimental investigation tests the analysis with good agreement for the two Arcton 113 and 21 fluids but no agreement with water. An explanation for this is proposed.
- Publication:
-
International Journal of Heat and Mass Transfer
- Pub Date:
- August 1975
- DOI:
- 10.1016/0017-9310(75)90190-8
- Bibcode:
- 1975IJHMT..18..961D
- Keywords:
-
- Film Condensation;
- Heat Pipes;
- Heat Transfer Coefficients;
- Performance Prediction;
- Rotating Bodies;
- Two Phase Flow;
- Capillary Flow;
- Centrifugal Force;
- Liquid-Vapor Interfaces;
- Nusselt Number;
- Tapering;
- Temperature Distribution;
- Thermodynamic Cycles;
- Velocity Distribution;
- Fluid Mechanics and Heat Transfer