Chemical Engineering - Fluid Mechanics - Discussion
Discussion Forum : Fluid Mechanics - Section 3 (Q.No. 42)
42.
Rotary vacuum pumps can reduce the absolute pressure to as low as __________ mm Hg.
Discussion:
2 comments Page 1 of 1.
Afjal said:
10 months ago
Rotary vacuum pumps can reduce the absolute pressure to as low as 0.1 mm Hg (or 1 × 10⁻³ Torr).
Yogesh said:
2 months ago
The correct answer is: 1 mm Hg.
Explanation:
Rotary vacuum pumps, specifically rotary vane pumps, are mechanical vacuum pumps widely used to create moderate vacuum levels. They work by trapping and compressing gas, then expelling it, gradually reducing the pressure inside a closed system.
Performance Range:
Typical ultimate vacuum (lowest pressure achievable) for a rotary vacuum pump:
~1 mm Hg (absolute) or ~133 Pa.
Some high-performance models may reach slightly lower, but for standard rotary vane pumps, 1 mm Hg is the practical limit.
Explanation:
Rotary vacuum pumps, specifically rotary vane pumps, are mechanical vacuum pumps widely used to create moderate vacuum levels. They work by trapping and compressing gas, then expelling it, gradually reducing the pressure inside a closed system.
Performance Range:
Typical ultimate vacuum (lowest pressure achievable) for a rotary vacuum pump:
~1 mm Hg (absolute) or ~133 Pa.
Some high-performance models may reach slightly lower, but for standard rotary vane pumps, 1 mm Hg is the practical limit.
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