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What Are Heat Pipes

 


Heat pipes are thermal transfer devices capable of transferring heat and energy several hundred times faster than conventional methods

Heat Pipe Structure

Heat Pipe Structure

A traditional heat pipe is a hollow cylinder filled with a vaporizable liquid.

  • A. Heat is absorbed in the evaporating section.
  • B. Fluid boils to vapor phase.
  • C. Heat is released from the upper part of cylinder to the environment; vapor condenses to liquid phase.
  • D. Liquid returns by grav1ty to the lower part of cylinder (evaporating section).

 

 

Using Heat Pipes to Improve Dehumidification

Dehumidification Heat Pipe and AHU

Heat pipes may be described as having two sections: Precool and Reheat.

The first section is located in the incoming air stream. When warm air passes over the heat pipes, the refrigerant vaporizes, carrying heat to the second section of heat pipes placed downstream. Because some heat has been removed from the air before encountering the evaporator coil, the incoming air stream section is called the precool heat pipe.

Air passing through the evaporator coil is assisted to a lower temperature, resulting in greater condensate removal. The “over cooled” air is then reheated to a desireable temperature by the reheat heat pipe section, using the heat transferred from the precool heat pipe. This entire process of precool and reheat is accomplished with no additional energy use. The result is an air conditioning system with the ability to remove 50 to 100% more moisture than regular systems.

 

Using Heat Pipes to Recover Energy from Exhaust Air to Supply Air

Energy Recovery Heat Pipes

State of the art heat exchangers based on the Heat Loop designed by HPT now allow for either equal calls for cool and heat recovery or optimizing thermal recovery in the season that matters most, while still allowing for appreciable recovery in the other season. Compact design, low pressure drop, high optimized season effectiveness and trouble-free operation with no moving parts, makes this product ideal for design engineers and owners alike.

Moreover, to reduce the likelihood of any cross contamination, a foam-filled separation of up to 8" can be incorporated into the design.