Many applications in the industry require a fluid to transport heat or cold. Those applications range from solar panels or heat
pump systems, over cooling or heating of industrial processes and refrigerants in indirect cooling systems to artificial ski-tracks or ice rinks. This transport medium is usually called secondary refrigerant or secondary coolant. The ideal secondary refrigerant must ensure a good thermal conductivity; have a high specific heat and low viscosity. It is also
important that the secondary refrigerant is non-flammable and compatible with common engineering materials.
Zitrec MC provides protection against boiling, freezing and corrosion. The dilution is determined by system requirements, mainly freezing requirements. However, to ensure good corrosion protection it is recommended to use at least 33 vol. % of Zitrec MC in the coolant solution, which provides freeze protection to -20°C. For lower freezing protection it is recommended to use Zitrec M–15°C. This ready-to-use solution contains an adjusted corrosion inhibitor package to ensure optimal corrosion protection. Mixtures with more than 70 vol. % of Zitrec MC in water are not recommended, because the freeze point is increasing again and physical properties are worse.