Cryogenic Fluids

Overview

Engineering reference data for Cryogenic Fluids in miscellaneous.

Key Formulas

Unit Conversion

$y = x \cdot k$

Multiply by conversion factor.

Linear Interpolation

$y = y_1 + \frac{(x - x_1)(y_2 - y_1)}{x_2 - x_1}$

Estimate between two known points.

Percentage

$p = \frac{\text{part}}{\text{whole}} \times 100\%$

Part as fraction of whole.

Variables

Symbol	Description	Unit
$x$	Input value	—
$y$	Output value	—
$k$	Conversion factor	—

Cryogenic Fluid Properties

The following table presents key physical properties of common cryogenic fluids used in industrial applications. These fluids are handled at extremely low temperatures, typically between -150°F to -450°F.

Unit Conversions

Standard conversion factors for cryogenic fluid calculations:

From	To	Conversion Factor
lb/ft³	kg/m³	*16.018
psi	Pa	*6894.8
Btu/lb	J/kg	*2326

Key Observations

• Lowest boiling point: Helium at -452.1°F — the coldest commonly used cryogenic fluid
• Highest liquid density: Fluorine (F₂) at 94.2 lb/ft³ — significantly denser than other cryogens
• Highest heat of vaporization: Methane (CH₄) at 219.2 Btu/lb — requires the most energy to vaporize
• Lowest critical pressure: Helium at 33.2 psia — approaches supercritical conditions at very low pressures

Interactive Charts

References

• Original Source