JPS6475882A - Supercooled liquid nitrogen production unit and manufacture thereof - Google Patents

Supercooled liquid nitrogen production unit and manufacture thereof

Info

Publication number
JPS6475882A
JPS6475882A JP23352887A JP23352887A JPS6475882A JP S6475882 A JPS6475882 A JP S6475882A JP 23352887 A JP23352887 A JP 23352887A JP 23352887 A JP23352887 A JP 23352887A JP S6475882 A JPS6475882 A JP S6475882A
Authority
JP
Japan
Prior art keywords
saturated
decompressed
gas
vessel
manufacture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP23352887A
Other languages
Japanese (ja)
Inventor
Toshiyuki Amano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP23352887A priority Critical patent/JPS6475882A/en
Publication of JPS6475882A publication Critical patent/JPS6475882A/en
Pending legal-status Critical Current

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  • Separation By Low-Temperature Treatments (AREA)

Abstract

PURPOSE: To simplify the apparatus by cooling a gas of a substance having a lower b.p. than that of LN2 as a gas for pressurization to a temperature of a level same as that of a decompressed saturated liq. before use. CONSTITUTION: When an LN2 vessel 16 is evacuated by a large-capacity vacuum pump, the pressure of LN2 in the vessel to provide a decompressed saturated LN2 along a saturated vapor pressure line. He gas fed through a pressirizing gas feed pipe 20 passes through heat exchangers 23, 24 which cools it down to the same temp. level as that of the decompressed saturated LN2 , and then enters the vessel 16 to pressure the decompressed saturated LN2 . But the He gas is not liquefied because of the substance having a lower b.p. than that of LN2 and pressures the decompressed saturated LN2 thereby producing a supercooled LN2 . This simplifies the apparatus and produces a supercooled LN2 , without uselessly evaporating and consuming LN2 .
JP23352887A 1987-09-16 1987-09-16 Supercooled liquid nitrogen production unit and manufacture thereof Pending JPS6475882A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23352887A JPS6475882A (en) 1987-09-16 1987-09-16 Supercooled liquid nitrogen production unit and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23352887A JPS6475882A (en) 1987-09-16 1987-09-16 Supercooled liquid nitrogen production unit and manufacture thereof

Publications (1)

Publication Number Publication Date
JPS6475882A true JPS6475882A (en) 1989-03-22

Family

ID=16956453

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23352887A Pending JPS6475882A (en) 1987-09-16 1987-09-16 Supercooled liquid nitrogen production unit and manufacture thereof

Country Status (1)

Country Link
JP (1) JPS6475882A (en)

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