Over Thirty Years of Thermal Excellence

Manufacturing Highly Efficient Liquid to Refrigerant Heat Exchangers

Small Company. Big Commitment.

We are a small manufacturing business with efficiency and customer service as top priorities. Our experienced team has been with Aqua Systems for well over a decade, ensuring consistent craftsmanship and quality assurance in every heat exchanger. As an owner-run company, we deliver superior service and personal attention to every customer.

What Makes the Aqua Systems Heat Exchanger Work So Well?

Diagram of coiled heat exchanger system
  • 1)Water enters the upper two tubes. As it passes through the tubes, turbulence of the water is maintained, even at lower water flow, due to the internal rifling of the tubing.

  • 2) Refrigerant liquid enters via the lower refrigerant tube and is forced to follow a long spiral flow path. This flow path is created by the tight tolerance between the copper tubing and the steel side walls. 

  • 3) The enhanced surface of the copper tubing (3.7 times that of smooth tubing) releases heat from the water side. The spiral and axial refrigerant flow causes rapid evaporation of the refrigerant, resulting in a very low pressure drop on the refrigerant side and no oil trapping. 

  • 4) As the liquid refrigerant absorbs heat from the water, it begins to boil off, exiting the heat exchanger as gas. 

  • 5) The water tubes cross over at the midpoint of the heat exchanger. The outside tube becomes the inside, and the inside becomes the outside tube. This results in two tubes exactly the same length, with equal pressure drop and equal heat exchange.

  • 6) The cooled water exits the two lower water tubes. 

Aqua Systems Heat Exchangers can be used in any application where air or water must be heated or cooled.

Some current applications for Aqua Systems Heat Exchangers:

Key Features

  • Close approach temperature between refrigerant condensing temperature and leaving water temperature reduces required condenser water volume

  • Lower water volume requirements allow for smaller condenser piping and circulating pumps

  • Counterflow design provides efficient liquid refrigerant subcooling, improving overall system efficiency

  • Spiral water tube design allows complete drainage for freeze cleaning

  • Freeze cleaning enables fast condenser maintenance with minimal downtime and no chemicals

  • Tight refrigerant path tolerances prevent oil trapping

  • Enhances heat pump performance with high BTU output at lower water temperatures

  • Low water side pressure drop reduces pump size and operating costs

  • Continuous water coils without internal joints minimize leak potential

  • Compact cylindrical design allows easy insulation

  • Every Aqua Systems heat exchanger is pressure tested to 660 psi for dependable operation

  • UL listed and compliant with Australian Standard 2971 1987 for serially produced pressure vessels

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Need more information?

Our manufacturing expertise creates the foundation for reliable solutions with confidence and efficiency.

Get in touch with Aqua Systems today.