Coaxial heat exchanger 

What is and how does a coaxial heat exchanger work?

This is a highly effective and compact tubular or “tube-in-tube" heat exchanger which is used aseither a condenser or an evaporator.
The external tube is made of either steel or copper and the internal spiral tube is made either of copper or cupro-nickel, according to operating. conditions.
 

How does it work?

These devices direct a water flow through the internal tube and the refrigerant flows between the annular space of the internal tube and the external tube. The refrigerant and fluid temperatures are dissimilar, which means that heat will be transferred from high to low temperatures in counterflow, and the spiral-shaped internal tube produces turbulence between the two fluids. This helps to increase the heat transfer surface area.

 

Features & advantages

  • Compact heat exchangers
  • High efficiency
  • High-pressure proof
  • More cost-effective vs. plate or shell and tube heat exchangers
  • Counterflow structure

What are the basic considerations to choose a correct selection?

  1. Required condensing unit capacity
  2. Available room for mounting *Based on the available room, coaxial shape can be
  3. suggested (i.e. helical, spiral, trombone, ultrathin shapes).
  4. Water input temperature (As delivered)
  5. Refrigerant
  6. Whether or not the exchanger needs to have a bracket.

Industries

  • HVAC
  • Naval
  • Transportación
  • Alimentos
  • Química
  • Industria pesada

Applications

  • Ice makers
  • Chillers
  • Subcoolers
  • Desuperheaters
  • Heat pumps (water heating)
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