Aluminium Heat Exchanger is a device built for efficient heat transfer from one fluid to another, whether the fluids are separated by a solid wall so that they never mix, or the fluids are directly contacted. When selecting a Aluminium Heat Exchanger technology, coolant compatibility with wetted surfaces must be considered. A copper fluid path is compatible with water and most common coolants used within Heat Exchanger. Aluminium Hat Exchanger offer excellent performance with ethylene glycol/water solutions (EGW), oils, and other fluids, but are not compatible with untreated water. The table below shows fluid and Heat Exchanger compatibility.
The most common design of a Heat Exchanger today is the fin and tube heat exchanger. Pole Star recommends a solution using aluminium fins and specific aluminium tubes, as an obvious alternative over the copper tube. As illustrated, the aluminium tubes are first inserted into a stack of fins. The tubes are pre-bended in hair-pin shape. After insertion, the tubes are expanded. The expansion secures the thermal contact between tube and fin. Afterwards, U-bends are brazed to the tubes.
Compared to a traditional HVACR copper tube/aluminium fin heat exchanger, this provides:
- A lighter heat exchanger
- Better corrosion resistance, due to a better galvanic balance of the materials
- More cost-effective heat exchanger
Why Aluminum: Aluminium as a material has major benefits.
- Cost
- Weight
- Corrosion
- Heat transfer
Aluminium as a material has major benefits that we can’t keep secret any longer.
- Price Aluminium remains one of the most cost-effective materials you can use, with outstanding properties which enable considerable savings – it is two-to-three times cheaper than copper – and significant technological improvements.
- Performance Using aluminium in HVACR applications improves system weight significantly. You save space and, also, in the case of a brazed heat exchanger, refrigerants. Further, you will gain a highly corrosion-resistant material with suitable alloys.
- Sustainability Due to its material properties, aluminium lasts longer than other materials when used in an appropriate way. More than that, we view the increased recycling of aluminium as important for resource preservation.
- Manufacturing Aluminium keeps adding benefits at the manufacturing stage by presenting easy forming abilities.