Cryogenics is the process of producing, maintaining and utilising very low temperatures, assume it starts at or below -150 °C. The National Institute of Standards and Technology (NIST) has chosen to consider the field of cryogenics as that involving temperatures below -180 °C, relevant in the LNG business.
Reference Definition by Cryogenics.nist.gov: Cryogenics is the science that addresses the production and effects of very low temperatures. Prof. Kamerlingh Onnes of the University of Leiden in the Netherlands first used the word in 1894 to describe the art and science of producing much lower temperatures. He used the word in reference to the liquefaction of permanent gases such as oxygen, nitrogen, hydrogen, and helium. In particular, efficient heat exchangers are required to reach very low temperatures. Over the years the term cryogenics has generally been used to refer to temperatures below approximately -150 °C.
Related Definitions in the Project: The Process Engineering
