wall of the pipe is lined with a wick structure, which provides surface area for
the capillary capability and condensation /evaporation cycle. Since the heat
pipe is evaporated and then charged with the working fluid prior to being
sealed, the internal pressure required is set by the vapor pressure of the
working media.
When heat is applied to the surface of the heat pipe, the working water is
vaporized. The vapor formed at the evaporator section is at a slightly higher
in temperature and pressure than other areas. This creates a pressure
gradient that forces the vapor to flow towards the cooler regions of the heat
pipe. As the vapor condenses on the heat pipe walls, the latent heat of
vaporization is transferred to the condenser. The capillary lined wick then
transports the condensate back to the evaporator section. This closed loop
process continues as long as heat is applied.
Hot Gas to Air Heat Pipe Heat Exchanger:
Typical finned Hot Gas to air Heat Pipe heat exchangers comprise of
number of tubular gravity assisted finned Heat Pipes arranged in
staggered pitch, depending upon the application. One of the
advantages of the Heat Pipe Heat Exchanger is its ability to operate
without cross contamination between the two streams.
Use of Gravity Assisted Heat Pipe complies orientation evaporator
above condenser for the Heat Pipe Heat Exchanger.
Hot Gas to Liquid Heat Pipe Heat Exchanger:
This heat exchanger resembles Air to Air unit, only difference is
liquid/water tank is provided at the condensation section to preheat
liquid / water.