Why the use of hfc has to be prefered both on a safety and environmenal basis ?
Despite comprehensive safety measures bound to its toxic risk, ammonia releases are not uncommon and human injuries and also fatalities are regularly reported in each country all over the world. Such releases also regularly leads to evacuation and even sometimes panics. As the use of hydrocarbons in low capacity refrigeration is very recent, few hydrocarbon accidents have been reported up to now, but it must be reminded that both fire and explosion should be expected , and that some recent cases have recently attracted a broad attention of the informed/ interested experts. Of course leakages can happen with HFCs, but since HFCs are safe even at very high concentrations, the health risk is very low. Cases where human consequences were observed are exceptional and were not due to to toxicity but simply to an asphyxia in confined spaces where the leaked HFC replaced the oxygen . The real consequence associated with a local HFCs leak is therefore the accidental release of a gas whose quant
