THE GLACIER JOURNAL
Ideas, explanations and practical questions for the people behind thermal systems.
A coolant quote is only comparable when the model, concentration, quantity, packaging, delivery basis and technical documents match. Use this checklist before choosing on price.
Aluminium's protective oxide is stable only between pH 4 and 9. What that means for choosing a secondary coolant, and why some model codes carry a trailing L.
Sizing a loop needs the cooling load, the fluid's specific heat and the temperature rise you allow. See how they relate, and why fluid choice barely moves it.
A worked analysis of concentration, freezing point and viscosity in a glycol loop, with the pumping-energy penalty of over-concentrating expressed as a range.
Water becomes most of a diluted coolant charge. See what chloride, hardness and conductivity do to a loop, and how to specify make-up water before you fill.
Adding water or concentrate without a target concentration is how loops drift out of protection. See how to set a target, read the curve, and correct a charge.
Measured weight-loss data from the Institute of Metals shows how these fluids perform against glycol. See what it covers and how to specify with it.
A single viscosity or heat-capacity figure rarely describes your system. Learn what reference values mean, how concentration and temperature move them, and what to request instead.
Freeze protection and burst protection require different glycol concentrations. Learn the difference, and what to check before a cold weekend arrives.
The EU PFAS restriction sets out specific provisions for heat transfer fluids. See the timeline, the named uses, and what to verify before specifying a coolant.
Understand primary refrigerants and secondary coolants, how their circuits differ, and what to check before specifying a Glacier heat transfer fluid.
