Filling Heat
If diving cylinders are filled too quickly, the gas inside them becomes hot as a result of adiabatic heating, increasing in pressure, which results in a drop in pressure when the cylinder cools later. Cylinders are often filled at a rate of less than 1 bar (100 kPa or 15 lbf/in²) per second to reduce this increase in temperature. In an attempt to cool the cylinder when filling, some people “wet fill”, immersing their cylinders in a cool water bath. This increases the risk of internal cylinder corrosion by moisture from damp components entering the cylinder during filling.
Read more about this topic: Diving Air Compressor
Famous quotes containing the words filling and/or heat:
“the focused beam
folds all energy in:
the image glares filling all space:
the head falls and
hangs and cannot wake itself.”
—Archie Randolph Ammons (b. 1926)
“Beware thoughts that come in the night. They aren’t turned properly; they come in askew, free of sense and restriction, deriving from the most remote of sources.”
—William Least Heat Moon [William Trogdon] (b. 1939)