Cryogenic equipment produces or is used in the production of very low temperature materials or processes. Cryogenics, the study of very low temperatures, involves temperatures that are colder than those that can be attained with conventional refrigeration equipment. Cryogenic equipment is designed to reach ultra-low temperatures at a slow rate in order to prevent thermal shock to the components being treated. Cryogenic temperatures range from -238 °F (-150° C, 123.2 K°) to absolute zero. At these low temperatures, substances that are naturally gases can be liquefied and some metals lose electrical resistance, as they get colder.
Cryogenic equipment includes cryogenic storage racks and boxes, cryogenic refrigerators, temperature controllers, cryogenies accessories and cryogenic tanks. A cryogenic tank or dewar is used to store cryogenic gases such as liquid oxygen, nitrogen, argon, carbon dioxide, and methane in bulk quantities. Cryogenic refrigerators are used to preserve cryogenic materials. In a cryogenic refrigerator, a refrigerant is circulated in a fluid flow path between the first and second chambers by the movement of a displacer.
Cryogenic equipment produces or is used in the production of very low temperature materials or processes. Cryogenics, the study of very low temperatures, involves temperatures that are colder than those that can be attained with conventional refrigeration equipment. Cryogenic equipment is designed to reach ultra-low temperatures at a slow rate in order to prevent thermal shock to the components being treated. Cryogenic temperatures range from -238 °F (-150° C, 123.2 K°) to absolute zero. At these low temperatures, substances that are naturally gases can be liquefied and some metals lose electrical resistance, as they get colder.
Cryogenic equipment includes cryogenic storage racks and boxes, cryogenic refrigerators, temperature controllers, cryogenies accessories and cryogenic tanks. A cryogenic tank or dewar is used to store cryogenic gases such as liquid oxygen, nitrogen, argon, carbon dioxide, and methane in bulk quantities. Cryogenic refrigerators are used to preserve cryogenic materials. In a cryogenic refrigerator, a refrigerant is circulated in a fluid flow path between the first and second chambers by the movement of a displacer.
Cryocoolers and liquid nitrogen equipment are types of cryogenic equipment used to attain cryogenic temperatures. There are two basic types of crycoolers: a stirling cryocooler and a pulse tube cryocooler. Cryogenic equipment which uses liquid nitrogen gas as a coolant is called liquid nitrogen equipment. Because of its high density in its liquid state, liquefied nitrogen gas can be stored easily, safely transported, and used as a coolant. Liquid nitrogen refrigerators provide low daily evaporation losses. Both crycoolers and liquid nitrogen equipment can be controlled by computers.
Cryogenic equipment is used in many applications. Some examples include the storage and transportation of liquefied gases, food preservation, cryosurgery, rocket fuels, and super-conducting electromagnets. Cryogenic equipment often adheres to standards specified by the American Society of Mechanical Engineers (ASME) and documents such as the Draft Environmental Impact Report (DEIR).
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