AeroX and HydroX heat exchangers

Exegy plastic heat exchangers come in two versions:

These heat exchangers can heat and cool air, pre-condition fresh air, and recover residual heat from gases and liquids.


What makes Exegy heat exchangers unique?

Exegy heat exchangers have many advantages over conventional heat exchangers. For example they are:

The AeroX and HydroX heat exchangers are ideally suited for industrial, agricultural and offshore applications. Heating, cooling and heat recovery are just some of the possibilities offered by these heat exchangers which are often combined with air scrubbers, TES systems, heat pumps, etc.


How are the AeroX and HydroX constructed?

These heat exchangers consist of purpose-developed flexible thin-walled polyethylene (PE) tubes, which ensure maximum heat transfer. The materials chosen ensure that the heat exchanger packages can withstand temperatures far below freezing point. The liquid in the heat exchanger may freeze, but this will not damage the packages. Since the heat exchanger is made entirely of PE, it is resistant to a wide range of liquids and aggressive environments.  This has made corrosion a thing of the past. Since dirt does not easily adhere to the smooth surface of the tubes,  the units require little or no maintenance.  And any cleaning needed can be done very easily. Together with the AeroX's corrosion resistance, this is your guarantee of the continued high efficiency of the AeroX for many years. This is in stark contrast to conventional heat exchangers. The tube packages can be interconnected to increase capacity. This enables optimum solutions for all situations to be created by these highly versatile heat exchangers


Pressure test

Before leaving our factory, our heat exchangers are extensively tested for any leaks and production errors


What about the conductivity of plastic heat exchangers?

Plastics are poor heat conductors. In other words, they have higher thermal resistance than metals. Exegy heat exchangers minimise this thermal resistance. The wall thickness of the plastic tubes in the Exegy heat exchangers is only 0.8 mm. This greatly improves thermal conduction. Furthermore, the exchange area has been greatly increased (1300 metres of tubing per square metre) and the dwell time in the exchanger is longer. This has completely removed all the restrictions posed by the conductivity of plastics.

Here you can download a whitepaper showing an example calculation comparing the thermal conductivity of aluminium to the thermal conductivity of polyethylene (QUEO 0201) by AeroX.


How do I calculate how much energy can be transferred?

The above product description shows some of the transfer capacities of AeroX and HydroX. In practice, every situation is different. In order to be able to give you as much information as possible about the added value of an Exegy heat exchanger for your particular situation, we have developed two calculation tools: ExegyAeroCalc and ExegyHydroCalc.  This enables us to calculate how much energy can be transferred in your specific situation.


Would you like to know more or make a personal appointment?

Would you like to know more about what Exegy heat exchangers can do for you? Please contact us, free of any obligation!

AeroX Heating/cooling air, pre-conditioning fresh air and recovering residual heat

In the case of the AeroX air-to-water heat exchanger, the liquid (usually water) flows through the plastic tubes of the heat exchanger. The gas (usually air) flows between the water-filled plastic tubes. The difference in temperature between the water and the surrounding air will cause energy (heat) to be transferred from the water to the air, or vice versa, from the air to the water. 

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HyroX Energy recovery from low-grade energy liquids

In the case of the HydroX water-to-water heat exchanger, the liquid (usually water) flows through the plastic tubes of the heat exchanger and between the water-filled plastic tubes. The difference in temperature between the water in the tubes and the surrounding water causes energy (heat) to be exchanged.

The HydroX is available in two versions as standard:

  • HydroX 0.9 - consisting of packages of 900 mm high
  • HydroX 1.6 - consisting of packages of 1600 mm high
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Cube Ventilation unit for heating/cooling air

The Cube has been designed to enable two, three, or four sides to be fitted with heat exchanger packages. Each filled side contains five AeroX air-to-water heat exchanger packages. When fitted with a housing, the Cube can be used as a roof unit or installed along a building.

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Exegy's Fancoil unit is a fully modular design. The unit is based on the AirBox. This consists of six AeroX air-to-water heat exchangers. 

The heat exchangers are made of a polyethylene based elastomer. The heat exchangers owe their light weight and high corrosion resistance to the plastic material.

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Control computers
Control computers For optimum climate and efficiency

Special control computers have been developed to achieve an optimum climate, energy efficiency, and thus cost efficiency.

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Frequency inverters
Frequency inverters Pump and fan speed control

As standard, we use Danfoss frequency inverters to control the speeds of pumps and fans. Exegy supplies these frequency inverters from stock.

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Plate heat exchangers
Plate heat exchangers For combined thermal energy storage systems and energy recovery from gas scrubbers

AeroX heat exchangers are extremely suitable for thermal energy storage (TES) systems and energy recovery from gas scrubbers.

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Pump sikds
Pump sikds For lower energy consumption and improved robustness

The operation principle of AeroX and HydroX heat exchangers is based on fluid flowing through the tubing. Their flow resistance is very low compared to that of metal heat exchangers. A properly dimensioned system will therefore require relatively little electrical energy. A number of pumps with special pump characteristics have been selected for this purpose.

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Waste water heat recovery
Waste water heat recovery Sustainable alternative to conventional systems

Suitable for public swimming pools and fish farms.

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