Cryogenic Fluids: Properties & Applications of Oxygen, Nitrogen, Argon, Neon, Fluorine, an, Slides of Technical Writing

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Cryogenic materials

By

B.Srinivas, Asst professor

Mvgr college of Engg.

Introduction

• (^) Cryogenic systems are the system which are at a very low temperature region. Generally, a temperature below 123 K is considered as cryogenic systems. There are many applications for a cryogenics today. Some of the applications are listed below. - Rocket propulsion - Electronics
• (^) High energy physics
• (^) Space simulation
• (^) Manufacturing process
• (^) Recycling of materials

Liquid Nitrogen Produced commercially by distillation of liquid air. Clear, colorless fluid that resembles water in appearance. Boils at 77.36 K and freezes at 63.2 K. Density is 807 kg/m

Nitrogen with an atomic number of 14 has two stable isotopes with mass numbers 14 and 15. Liquid Argon Is a clear, colorless fluid. It is inert and nontoxic. Boils at 87.3 K and freezes at 83.8 K. Argon has three stable isotopes of mass numbers 36, 38, and 40.

• (^) Liquid Neon
• (^) Is a clear, colorless liquid.
• (^) Boils at 1 atm at 27.09 K and freezes at 24.54 K.
• (^) Neon is inert, has a larger heat of vaporization per unit volume, and has a higher density makes it an attractive refrigerant.
• (^) Neon (atomic weight = 20.183) has three stable isotopes of mass numbers 20, 21, and 22.
• (^) Liquid Fluorine
• (^) A light yellow liquid.
• Having a normal boiling point of 85.24 K (153.4°R).
• (^) Liquid fluorine is one of the most dense cryogenic liquids (density at normal boiling point = 1507 kg/m3).
• Will react with almost all inorganic substances.
• Fluorine is highly toxic.