Structure & operating principle
Shapes of the HP
Heat Pipe Heat Sink (1)
Heat Pipe Heat Sink (2)
HPHX for heat recovery
HPHX for cooling enclosure
Flat plate HP
HPHS Cooling device
Liquid cold plate
Heat sink
Drawings of HS & HPHS

Structure and operating principle

The heat pipe consists of three components: the container, the working fluid, and the wick. Heat applied by a heat source at the evaporator vaporizes the working fluid in that section. This also creates a pressure difference that makes the vapor to flow from the evaporator to the condenser where it condenses releasing the latent of vaporization. This liquid returns to the evaporator by means of a wick (via capillary forces) so that the heat pipe can continuously transport the heat of vaporization from evaporator to condenser. This process is capable of transporting the heat from a hot region to a cold region. Therefore, the heat pipe transports a large amount of heat with a small temperature difference.

Characteristics and advantages

The heat pipe can transport a large amount of heat with a small temperature difference between evaporator and condenser. It can be operated in the wide range of temperature (100 - 1,000 K) according to types of working fluids. There are various shapes of container, internal structures, and wicks.