A detailed mathematical model of low-temperature axially grooved heat pipes (AGHP) is developed in which the fluid circulation is considered along with the heat and mass transfer processes during evaporation and condensation. The results obtained are compared to existing experimental data. Both capillary and boiling limitations are found to be important for the flat miniature copper-water heat pipe, which is capable of withstanding heat fluxes on the order of 40 W/cm2 applied to the evaporator wall in the vertical position. The influence of the geometry of the grooved surface on the maximum heat transfer capacity of the miniature AGHP is demonstrated.
Issue Section:
Heat Pipes
1.
Bankston
C. A.
Smith
H. J.
1973
, “Vapor Flow in Cylindrical Heat Pipes
,” ASME JOURNAL OF HEAT TRANSFER
, Vol. 95
, pp. 371
–376
.2.
Bowman, W. J., and Hitchcock, J. E., 1988, “Transient, Compressible Heat-Pipe Vapor Dynamics,” Proc. ASME National Heat Transfer Conf., Houston, TX, Vol. 1, pp. 329–338.
3.
Faghri, A., 1995, Heat Pipe Science and Technology, Taylor & Francis.
4.
Ivanovskii
M. N.
Privezentsev
V. V.
Il’in
Yu. A.
Sidorenko
E. M.
1984
, “Experimental Investigation of Heat Transfer With Evaporation of the Agent From a Corrugated Capillary Structure
,” J. Engineering Physics and Thermophysics
, Vol. 46
, No. 4
, pp. 377
–381
.5.
Jang
J. H.
Faghri
A.
Chang
W. S.
1991
, “Analysis of the Transient Compressible Vapor Flow in Heat Pipes
,” Int. J. Heat Mass Transfer
, Vol. 34
, pp. 2029
–2037
.6.
Jensen, M. K., and Memmel, G. J., 1986, “Evaluation of Bubble Departure Diameter Correlations,” Proc. 8th Int. Heat Transfer Conf., Vol. 2, pp. 1907–1912.
7.
Kamotani, Y., 1976, “Thermal Analysis of Axially Grooved Heat Pipes,” Proc. 2nd Int. Heat Pipe Conf., Bologna, Italy, pp. 83–91.
8.
Khrustalev, D., and Faghri, A., 1994a, “Heat Transfer During Evaporation and Condensation on Capillary-Grooved Structures of Heat Pipes,” Proc. 1994 ASME Winter Annual Meeting, HTD-Vol. 287, pp. 47–59.
9.
Khrustalev
D.
Faghri
A.
1994
b, “Thermal Analysis of a Micro Heat Pipe
,” ASME JOURNAL OF HEAT TRANSFER
, Vol. 116
, No. 1
, pp. 189
–198
.10.
Longtin, J. P., Badran, B., and Gerner, F. M., 1992, “A One-Dimensional Model of a Micro Heat Pipe During Steady-State Operation,” Proc. 8th Int. Heat Pipe Conf., Beijing, China, preprints, pp. C-5-1 to C-5-7.
11.
Lorenz, J. J., Mikic, B. B., and Rohsenow, W. M., 1974, “The Effect of Surface Conditions on Boiling Characteristics,” Proc. 8th Int. Heat Transfer Conf., Vol. 4, p. 35.
12.
Paul
B.
1962
, “Compilation of Evaporation Coefficients
,” ARS J.
, Vol. 32
, pp. 1321
–1328
.13.
Plesch, D., Bier, W., Seidel, D., and Schubert, K., 1991, “Miniature Heat Pipes for Heat Removal From Microelectronic Circuits,” in: Micromechanical Sensors, Actuators, and Systems, D. Cho, R. Warrington, Jr., et al., eds., ASME DCS-Vol. 32, pp. 303–313.
14.
Schlitt, K. R., Kirkpatrick, J. P., and Brennan, P. J., 1974, “Parametric Performance of Extruded Axial Grooved Heat Pipes From 100 K to 300 K,” Proc. AIAA/ASME Thermophysics and Heat Transfer Conf., AIAA Paper No. 74–724.
15.
Schneider, G. E., and DeVos, R., 1980, “Nondimensional Analysis for the Heat Transport Capability of Axially-Grooved Heat Pipes Including Liquid/Vapor Interaction,” AIAA Paper No. 80–0214.
16.
Shah, R. K., and Bhatti, M. S., 1987, “Laminar Convective Heat Transfer in Ducts,” in: Handbook of Single Phase Convective Heat Transfer, Kakac et al., eds., Wiley, New York.
17.
Stepanov
V. G.
Volyak
L. D.
Tarlakov
Yu. V.
1977
, “Wetting Contact Angles for Some Systems
,” J. Engineering Physics and Thermophysics
, Vol. 32
, No. 6
, pp. 1000
–1003
.18.
Vasiliev, L. L., Grakovich, L. P., and Khrustalev, D. K., 1981, “Low-Temperature Axially Grooved Heat Pipes,” Proc. 4th Int. Heat Pipe Conf., London, pp. 337–348.
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