Question

What is prefactional liquifaction

Answer 1

Liquefaction[1] is a term used in materials sciences to refer to any process which either generates a liquid from a solid or a gas,[2] or generates a non-liquid phase which behaves in accordance with fluid dynamics.[3] Liquefaction occurs both as part of natural processes, and in man-made processes used in science and commerce. For example, "[a] major commercial application of liquefaction is the liquefaction of air to allow separation of the constituents, such as oxygen, nitrogen, and the noble gases",[4] while another application is the conversion of solid coal into a liquid form usable as a substitute for liquid fuels.[5]