Heat Pipe Assemblies

Heat Pipe Heat Sink

Heat Pipe Heat Sink

Copper/water heat pipes are made of copper, use water as a working fluid and typically operate in the temperature range of 20 to 150°C. ACT manufactures copper/water heat pipes into two basic geometries: Tubular Heat Pipes and Planar Heat Pipes. The tubular heat pipes typically have outer diameters from 1/16″ (1.5mm) to 1.5″ (38mm). Custom diameters can be manufactured per customer requirements. The planar heat pipes are also called vapor chambers which are used as heat spreaders. To the left is a photo of a copper/water heat pipe manufactured at ACT.

Copper/water heat pipes can be combined with other components to form heat transfer assemblies.

Current custom designs and options include:

  • Outer diameter (OD): From 1/16″ (1.5mm) to 1.5″ (38mm)
  • Cross section geometry: round, rectangular or flattened
  • Length: any, depending on application
  • Geometry: straight or multiple bends (certain bend radius limits apply)
  • Bonding of heat pipes to assembly: mechanical, epoxy or soldering
  • Heat pipe surface coating: nickel or tin

All of ACT’s copper/water heat pipes are designed to survive numerous freeze/thaw cycles without any degradation as required by many outdoor applications.

Some examples are shown below, including:

  • Heat pipe heat sinks for electronics and energy conversion device cooling
  • Embedded heat pipe heat spreaders for electronics cooling
  • Heat pipe heat exchangers for electronics enclosure cooling, waste heat recovery and chemical process temperature control

    Heat Pipe Assembly

    Copper block-pipe-fin assembly.

Block-Heat Pipe Fin Assembly.  The heat pipes transport heat from electronics mounted on the block  to a series of fins.  Fans mounted over the circular openings supply air to cool the fins.

Block-Heat Pipe-Fin Assembly.  The heat pipes transport heat from electronics mounted on the block  to a series of fins.  Fans mounted over the circular openings supply air to cool the fins.

 

Heat Pipe Assembly

Heat Pipe used to move heat away from hot side of TEC to external heat sink.

 

Heat pipe assembly in ruggedized chassis

Multiple heat pipe assemblies, partially embedded into a ruggedized chassis.

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