required b. The total number of moles of added N2 and equivalent volume in litres if supplied at 330 bar (gauge). Assume a vacuum of 25 mmHg (absolute) and charge pressure of 750 kPag. c. The same vessel if now filled with a fluid at a rate of 4.5 L/s having a streaming current of 4×10-7 A. The fluid conductivity is 10-18 mho cm-1 and the dielectric constant is 2.0, compute: The accumulated charge and energy for a full vessel. Is there a
A 30,000 L vessel originally charged with air at ambient conditions (1 atm, 25 oC) is
required to be purged to a 6 ppm oxygen concentration level prior to start of operation.
If a combined vacuum pressure (vacuum-first) purging technique is employed using
nitrogen as the inert gas, calculate
a. The number of cycles required
b. The total number of moles of added N2 and equivalent volume in litres if supplied at
330 bar (gauge). Assume a vacuum of 25 mmHg (absolute) and charge pressure of
750 kPag.
c. The same vessel if now filled with a fluid at a rate of 4.5 L/s having a streaming current
of 4×10-7 A. The fluid conductivity is 10-18 mho cm-1 and the dielectric constant is 2.0,
compute:
The accumulated charge and energy for a full vessel. Is there a high chance of ignition
for the vessel? Explain.
Assume a spherical geometry for the vessel, surrounded by air.
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