- Heat pipes are excellent for transfer of high levels of heat output from confined areas.
- Once transferred from a confined area, heat can be effectively dissipated through a larger passive or active heat sink.
- Typical applications:
- > Laptop Computers
- > High-performance processors (CPU, GPU)
- > Aerospace; spacecraft temperature equalization, component cooling
- > Constrained geometries
- > Low maintenance/high reliability applications
- > No moving parts, extreme lifetimes
- > Noise-sensitive environments where heat can be dissipated to a larger, remote heat sink
- > Stagnation regions where airflow is poor
- > Limited electrical consumption
- > Example: Passive solution to conserve battery power
How to select a working fluid?
- > High surface tension – generates high capillary force and resists entrainment.
- > High Vapor pressure – reduces vapor velocity.
- > High latent heat – transfers more heat with less fluid.
- > High thermal conductivity – lower ΔT and reduces nucleate boiling at the wick/wall interface.
- > Low vapor viscosity – increase fluid flow capacity.
||Relative Figure of Merit [80°C]||Useful Range [°C]||Wick/Vessel Material||Life [hrs]|
|Less than 50000|