waterglycolmengsels

Waterglycolmengsels are liquid mixtures of water and glycols, typically ethylene glycol or propylene glycol, used as heat-transfer fluids in cooling and heating systems, antifreeze for engines, and in solar thermal and industrial applications. Their main function is to depress the liquid’s freezing point and elevate its boiling point, enabling operation across a wider temperature range. The glycol also affects viscosity and heat capacity, with formulations designed for specific performance and safety requirements.

There are two common families of waterglycolmengsels: ethylene glycol–based and propylene glycol–based. Ethylene glycol mixtures provide strong freezing protection and effective heat transfer but are toxic if ingested, limiting their use in contexts involving humans or animals. Propylene glycol mixtures are less toxic and are often chosen for consumer-facing or food-contact environments, including some “food-grade” or pharmaceutical applications. In both types, corrosion inhibitors and other additives are included to protect metals such as aluminum, copper, steel, and cast iron in closed-loop systems.

Applications span automotive cooling systems, building HVAC closed-loop circuits, solar thermal collectors, and various industrial processes requiring reliable heat transfer fluids. The exact properties—freezing point, boiling point, viscosity, and heat capacity—depend on the glycol type and concentration. Proper formulation also requires appropriate inhibitor packages and pH control to minimize corrosion and scaling.

Safety and environment: Ethylene glycol is highly toxic if swallowed; propylene glycol is less toxic but should still be handled with care. Spills should be contained and cleaned up promptly, with disposal following local regulations. Routine maintenance includes monitoring glycol concentration, freezing point, pH, and corrosion inhibitors, and replacing the fluid per manufacturer guidelines.