Advantages of Coaxial Heat Exchangers: All You Need to Know

Heat exchangers are present in different forms across the industrial landscape. From working as milk pasteurizers in the food industry to being used as evaporator coils in HVAC, there are many types of heat exchangers. However, most industries are looking for simple, compact, yet efficient heat exchanger models for their operations, and a coaxial heat exchanger is one of them. Not only do these heat exchangers have simple construction, but they also offer various advantages. Here’s all you should know.

How does a coaxial heat exchanger work?

A coaxial heat exchanger is the best example of a “tube in tube” construction. It is also commonly known as a spiral heat exchanger. The device is frequently used as an evaporator or condenser in heat pumps, chillers, air conditioners, and various HVAC systems.

Depending on the working environment, the inner tube may be constructed of copper, titanium, or copper and nickel alloys. At the same time, the outer tube is generally composed of steel/copper. The surface of the inner tube features several spiral grooves that serve a particular purpose. These grooves increase the surface area resulting in an improved heat transfer.

coaxial heat exchanger shows a counter-current heat transfer mechanism. Water and refrigeration have different freezing and boiling points; therefore, heat will flow from one to the other. By deploying this efficient heat exchange model, you can also achieve superheating and super-cooling of refrigerant vapors and liquid refrigerant, respectively.


1. Highly efficient: Since it is apure counter-flow heat exchanger, you can expect a highly efficient heat transfer mechanism. All thanks to the additional grooves on the inner tube’s surface that have been textured to improve heat transfer on the refrigerant side.

2. Corrosion Resistance: These heat exchangers are actually made to last. The strong and reliable structure forms due to fewer solder joints. In addition, they are made from a non-corrosive material, making them suitable for even harsh working conditions.

3.Ergonomic design: The modular design is clear and straightforward and has a simple yet effective construction. According to different business needs, this particular tube-in-tube heat exchanger can be customized and manufactured in distinct shapes and sizes. That’s right! Coaxial heat exchangers are readily available in square, circular, double-circle, or mosquito coil shapes to accustom different equipment and use.


  • Coaxial heat exchangers are widely used as chillers with heat pumps for hot water supply.
  • Multiple-stage refrigeration systems also primarily use this type of heat exchange structure.
  • Used in climate chambers and temperature-control devices.
  • Used in marine applications for both cooling and heating operations.

Bottom Line

Overall, a coaxial heat exchanger proves to be a super-efficient and practical solution. With such an amount of advantages, this type of heat exchange is suitable for improved efficiency. If your business is also looking to boost its productivity, order your batch of spiral heat exchangers from Discount Coil. We are a one-stop solution for commercial and industrial coils, heat exchangers, and tube bundles, everything at guaranteed lowest prices!

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