3. Water-alcohol and water-ammonia mixtures

Dissolving low-freezing fluids, such as alcohols, in water to obtain refrigerant fluids is a technique traditionally used by refrigeration engineers. The most commonly used antifreezes are: ethylene glycol (monoethylene glycol with formula C ₂ H ₄ (OH) ₂ ), propylene glycol (1-2 propylene glycol with formula C ₃ H ₆ (OH) ₂ ). More anecdotal remains the use of ethanol (C ₂ H ₅ OH), methanol (CH ₃ OH) and glycerol (C ₅ H _10...