ClipArt ETC
"After thorough drying, the air to be liquefied enters through the pipe a, and in the compresor C is compressed to about 200 atmospheres. R is a water cooler, to remove the heat of compression. The air thus cooled and strongly compressed passes down through the inner tube of the helical coil H to a valve below." —Derr, 1911

Air Liquefaction Machine

"After thorough drying, the air to be liquefied enters through the pipe a, and in the compresor C is…

An absorption machine with ammonia and water mixing. The generator B heats the ammonia and water mixture with a furnace into the condenser. The mixture, traveling in coils, is cooled with running water into the refrigerator I. The cooled vapor is absorbed into cold water in absorber tank A.

Ammonia and Water Cycle Absorption Machine with Condenser and Tank

An absorption machine with ammonia and water mixing. The generator B heats the ammonia and water mixture…

An illustration of a compression machine. As piston A is pushes ammonia gas through the condenser B and vaporizer C. The condenser cools the ammonia to liquid in the coil with running water. The cooled ammonia travels through the valve D to be heated in vaporizer C.

Ammonia Cycle Compression Machine with Vaporizer and Condenser

An illustration of a compression machine. As piston A is pushes ammonia gas through the condenser B…