Air As A Refrigerant
"Air cycle is not a new technology. At the turn of the century air cycle or 'cold air machines' were available from companies such as J & E Hall... These were used on board ships and by food producers and retailers to provide cooling for their food stores."
Air has been used for residential, automobile, and turbine-powered aircraft air-conditioning and/or cooling. The reason why air is not more widely used as a general-purpose refrigerant is the perception that the use of air is too inefficient to be practical.
Yet, with suitable compression and expansion technology, air can be a practical (albeit not the most efficient) refrigerant, free of the possibility of environmental contamination or damage, and almost completely harmless to plants and animals. An explosion could result from refrigerant type compressor lubricating oils being compressed together with the air.
Read more about this topic: Refrigerant
Famous quotes containing the word air:
“After us they’ll fly in hot air balloons, coat styles will change, perhaps they’ll discover a sixth sense and cultivate it, but life will remain the same, a hard life full of secrets, but happy. And a thousand years from now man will still be sighing, “Oh! Life is so hard!” and will still, like now, be afraid of death and not want to die.”
—Anton Pavlovich Chekhov (1860–1904)