A thermosyphon is a wickless, gravity-assisted heat pipe that
contains a certain amount of working fluid for heat transfer. The
working fluid is vaporized by the heat input at the evaporator.
The vapor then rises through the adiabatic section of the device
to the condenser, where it condenses and releases its latent heat
of vaporization. The action of gravity then returns the condensate
to the evaporator section. Internal phase change circulation of
the working fluid serves as the mechanism of heat transfer in the
thermosyphon. The thermosyphon is widely used in electronics
cooling systems, solar photovoltaic cells, and energy recovery systems
due to its simple structure, operation under environmentallysound
conditions, and high heat transfer capacity which results
from its operation via phase change