Dual axial channel heat pipe

Patent · Tue Sep 11 04:00:00 EDT 1984

OSTI ID:6138285

Alario, J P; Haslett, R A; Kosson, R L

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.

• Assignee: Grumman Aerospace Corp.
• Patent Number(s): US 4470451
• OSTI ID: 6138285
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420200* -- Engineering-- Facilities
Equipment
& Techniques
CAPILLARY FLOW
CIRCULATING SYSTEMS
DESIGN
DUCTS
ENERGY TRANSFER
EVAPORATION
FINS
FLUID FLOW
FLUID MECHANICS
FLUIDS
GASES
HEAT PIPE WICKS
HEAT PIPES
HEAT TRANSFER
HYDRODYNAMICS
LIQUID FLOW
MECHANICS
PHASE TRANSFORMATIONS
PRESSURE DROP
SEALS
VAPORS
VISCOUS FLOW
WORKING FLUIDS