Our AERO 3500 device is part of our cooling solutions: it is an air/water exchanger, specially designed to be integrated into the Hydrogen station developed by the Client.

This business case perfectly illustrates our ambition for the future: to support our Clients' project teams on the design-qualification aspects of the refrigeration part, while offering an industrialization capacity for series/batch production or deployment of machine parks.

Glycol is a type of alcohol commonly used as a heat transfer fluid in heating, ventilation, air conditioning, and refrigeration (HVAC-R) systems. There are two main types of glycol used in cooling systems:

• Ethylene glycol (EG): very efficient from a thermal and fluidity point of view, but unfortunately quite toxic;
• Propylene glycol (PG): more viscous, it is also slightly less efficient. However, it is better suited for certain uses, such as food processing, pharmaceuticals, etc.

Most often mixed with water (the glycol content of the mixture is then expressed as a percentage), glycol forms an antifreeze solution which circulates in the cooling system.

Its main functions are:

1. Lowering the freezing point: Glycol prevents water from freezing in pipes at low temperatures, which could damage equipment.
   (Example: A 50% glycol solution can protect down to approximately -35°C.)
2. Raising the boiling point: It also allows the fluid to operate at higher temperatures without boiling, useful in some industrial systems.
3. Preventing corrosion: Glycol solutions often contain corrosion inhibitors that protect metal components (such as aluminum, copper, or steel) from rust.
4. And finally, improving heat transfer: Even though pure glycol has a lower heat capacity than water, it remains effective as a heat transfer fluid in demanding environments.

It is therefore naturally found in many "cold" devices: industrial and commercial cold units, coolers (or chillers) for cooling buildings or machines, process cooling systems (e.g.: breweries, laboratories), etc.