Types of Heat Pipes
From Thermal-FluidsPedia
Heat pipes have been designed and built with various cross-sectional areas as small as 30 μm width × 80 μm depth and 19.75 mm in length (micro heat pipes), and heat pipes as large as 100 m in length [1][2]. All heat pipes have an evaporator and condenser section where the working fluid evaporates and condenses, respectively. Many heat pipes also have a transport or adiabatic section which separates the evaporator and condenser sections by an appropriate distance, intended to satisfy the heat pipe limitations and/or the design constraints of the application. A given heat pipe may have multiple evaporators, condensers and adiabatic sections. The working fluid is usually circulated by capillary forces in a wick. However, gravitational, centrifugal, electrostatic, and osmotic forces can also be used to return the liquid from the condenser to the evaporator.
For simplicity of design and manufacturing, heat pipe containers are generally circular cylinders. Other shapes, however, such as rectangular (flat heat pipes), conical (rotating heat pipes), corrugated flexible heat pipes, and nosecap (leading edge heat pipes) geometries have been studied.
- Two-Phase Closed Thermosyphon
- Capillary-Driven Heat Pipe
- Annular Heat Pipe
- Vapor Chamber
- Rotating Heat Pipe
- Gas-Loaded Heat Pipe
- Loop Heat Pipe
- Capillary Pumped Loop Heat Pipe
- Pulsating Heat Pipe
- Monogroove Heat Pipe
- Micro and Miniature Heat Pipes
- Inverted Meniscus Heat Pipe
- Nonconventional Heat Pipes
References
- ↑ Faghri, A., 2012, "Review and Advances in Heat Pipe Science and Technology," Journal of Heat Transfer, 134(12), 123001. http://dx.doi.org/10.1115/1.4007407
- ↑ Faghri, A., 1995, Heat Pipe Science and Technology, 1st ed., Taylor & Francis, Washington, D.C.