Title :
Steady-state performance of a rotating miniature heat pipe
Author :
Lin, Lanchao ; Faghri, Amir
Author_Institution :
Dept. of Mech. Eng., Connecticut Univ., Storrs, CT, USA
fDate :
27 Jul-1 Aug 1997
Abstract :
The operating principle of a rotating miniature heat pipe (RMHP) with a grooved inner wall surface is addressed. A mathematical model of the hydrodynamic performance of RMHPs is developed. A simple correlation for the friction coefficient of axial liquid flow including a vapor drag effect is proposed based on the numerical analysis of 2D laminar liquid flow in a groove. With the present model, the maximum performance and optimum liquid fill amount of RMHPs are predicted under various operating conditions. Influences of operating temperature, rotational speed and liquid-vapor interfacial shear stress on the maximum performance and optimum liquid fill amount are discussed. Pressure drops of the axial liquid flow and vapor flow are demonstrated
Keywords :
drag; friction; heat pipes; hydrodynamics; laminar flow; numerical analysis; pipe flow; 2D laminar liquid flow; axial liquid flow; friction coefficient; hydrodynamic performance; liquid-vapor interfacial shear stress; mathematical model; numerical analysis; operating conditions; operating temperature; optimum liquid fill amount; pressure drops; rotating miniature heat pipe; rotational speed; steady-state performance; vapor drag effect; Cooling; Fluid flow; Friction; Heat engines; Heat pumps; Hydrodynamics; Mathematical model; Mechanical engineering; Numerical analysis; Steady-state;
Conference_Titel :
Energy Conversion Engineering Conference, 1997. IECEC-97., Proceedings of the 32nd Intersociety
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-4515-0
DOI :
10.1109/IECEC.1997.658225
