Interfacial thermodynamics of micro heat pipes
- Heat Transfer Research, Inc., College Station, TX (United States)
- Texas A M Univ., College Station, TX (United States)
Successful analysis and modeling of micro heat pipes requires a complete understanding of the vapor-liquid interface. A thermodynamic model of the vapor-liquid interface in micro heat pipes has been formulated that includes axial pressure and temperature differences, changes in local interfacial curvature, Marangoni effects, and the disjoining pressure. Relationships were developed for the interfacial mass flux in an extended meniscus, the heat transfer rate in the intrinsic meniscus, the 'thermocapillary' heat-pipe limitation, as well as the nonevaporating superheated liquid film thickness that exists between adjacent menisci and occurs during liquid dry out in the evaporator. These relationships can be used to define quantitative restrictions and/or requirements necessary for proper operation of micro heat pipes. They also provide fundamental insight into the critical mechanisms required for proper heat pipe operation. 29 refs., 6 figs.
- OSTI ID:
- 6562640
- Journal Information:
- Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States), Vol. 117:1; ISSN 0022-1481
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
HEAT PIPES
THERMODYNAMICS
INTERFACES
HEAT TRANSFER
THIN FILMS
CAPILLARIES
MATHEMATICAL MODELS
THERMODYNAMIC MODEL
VAPORS
BLOOD VESSELS
BODY
CARDIOVASCULAR SYSTEM
ENERGY TRANSFER
FILMS
FLUIDS
GASES
ORGANS
PARTICLE MODELS
STATISTICAL MODELS
420200* - Engineering- Facilities
Equipment
& Techniques
420400 - Engineering- Heat Transfer & Fluid Flow
990200 - Mathematics & Computers