摘要:
A pulse tube refrigeration system (21) wherein the pulse tube working gas is cooled to a defined first stage temperature and is brought to a defined second stage temperature by operation of a regenerator (33) and pulse tube (34), which are in flow communication through a cold heat exchanger (23), prior to providing refrigeration to a high temperature superconductor (10).
摘要:
A system for cooling a fluid particularly to a cryogenic temperature wherein a multicomponent refrigerant fluid is partially condensed, the liquid used to generate refrigeration to cool the product by recycle into an upstream portion of the warming leg of the refrigeration circuit, and the vapor, having a different composition than the liquid, is used to generate refrigeration at a colder temperature for further cooling of the product.
摘要:
A method for liquefying an industrial gas wherein a portion of the requisite refrigeration is generated by a multicomponent refrigerant circuit and a portion is generated by turboexpansion of either a portion of the industrial gas or a portion of the multicomponent refrigerant.
摘要:
A method for more efficiently liquefying industrial gas wherein refrigeration for the liquefaction is generated using a defined multicomponent refrigerant fluid and provided by a single flow circuit over a wide temperature range from ambient to cryogenic temperature.
摘要:
A method for generating refrigeration, especially over a wide temperature range including cryogenic temperatures, wherein a non-toxic, non-flammable and low or non-ozone-depleting mixture is formed from defined components and maintained in variable load form through compression, cooling, expansion and warming steps in a refrigeration cycle.
摘要:
This invention pertains to a method and apparatus for cooling and freezing of organic-comprised articles which makes use of liquid cryogen and of chilled gases from a mechanical refrigeration system to reduce the temperature of the article. The article is contacted with a liquid cryogen (80) and subsequently contacted with circulating cold gases (90) in the mechanical refrigeration system (76). The improvement relates to the method and apparatus for producing the cold gases (90) which are used in the mechanical refrigeration system (76); the method comprises using the cryogen vapors (78) generated upon contact of the articles with the liquid cryogen (80) as an indirect heat exchange fluid for removing heat from heat exchange fluids used in the mechanical refrigeration system (76). This indirect heat transfer using cryogen vapors (78) supplements cooling of the mechanical refrigeration system cold gases (90) by the mechanical refrigeration system chiller (96).
摘要:
A system for providing industrial gas to a use point in relatively small quantities that would otherwise require the use of high pressure gas cylinders, wherein industrial gas (4) is generated (30) from a feed (1), liquefied using refrigeration generated by a refrigeration system (34), and stored in a storage vessel (33) prior to provision to the use point (7). The preferred refrigeration system is a pulse tube system powered by gas associated with the industrial gas generation system.