Dual axial channel heat pipe

Details Dual axial channel heat pipe Dual axial channel heat pipe

1981-03-16

1984-09-11

Davis, Jr., Albert W.

Heat exchange

Intermediate fluent heat exchange material receiving and...

Liquid fluent heat exchange material

122366, F28D 1500

Patent

active

044704518

ABSTRACT:
A heat pipe comprising an elongated sealed metallic envelope having at least a pair of longitudinal channels extending along the length thereof. One of the channels is for the circulation of the vapor phase of the working medium in operation and the other for the liquid phase and capillary means are provided to furnish fluid communication therebetween. Dedicated vapor and liquid channels result in low viscous pressure drops, the capillary communication means and circumferential grooving in the vapor channel provide high capillary pressure differences, and circumferential grooving is provided to furnish the high evaporation and condensation film coefficients required. To support higher heat fluxes, wicking can be used to augment the capillary flow from the liquid channel. To support higher evaporator heat flux without the need for wicking means, the heat pipe can be provided with more than one liquid channel, each communicating with the vapor channel by capillary means. The heat pipe can be provided with an integral fin or equivalent means for rejection of heat by radiation to ambient or for attachment to a source of heat in the evaporator region thereof.

REFERENCES:
patent: 3734173 (1973-05-01), Moritz
patent: 3913665 (1975-10-01), Franklin et al.
patent: 3971634 (1976-07-01), Ranben et al.
patent: 4351388 (1982-09-01), Calhoun et al.

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