ROTARY VANE vs LIQUID RING
COMPRESSORS AND VACUUM PUMPS
PRINCIPLES OF OPERATION
Both the liquid ring and rotary vane depend on an eccentrically mounted rotor. In the case of the vane, blades slide in and out during rotation forming a seal with the housing bore. The liquid ring depends on a motive liquid, typically water, to form a seal during rotation. Both technologies reduce the displacement during rotation by virtue of the eccentric rotor. Compressed gas is discharged at the point of smaller displacement yielding compression. Rotary vanes wear by design and maintain their efficiency by sliding vanes always mating with the bore. Liquid ring vanes wear and result in continuously decreasing efficiency.
Liquid ring technology present a clear advantage in tolerance for liquid ingestion. Rotary vane technology presents significant advantages in reduced capital cost, reduced operational cost, lower maintenance cost and higher operational reliability. Rotary vanes present a very small amount of lubricant waste while liquid rings can present increased waste water treatment expense and makeup water expense. Compared to a good inlet scrubber, liquid rings present an expensive, complex alternative and rotary vanes are the lower cost, more reliable choice within their performance range.
Ro-Flo Compressors 2540 W. Everett StreetAppleton, WI 54914United States of America
MAIN OFFICE Toll Free: (855) 4-A-ROFLO (855) 427-6356Main: 920-574-2651
GENERAL INFORMATION & COMPRESSOR SELECTION DENNIS WACKERPhone: (847) 421-4862Email: email@example.com
ENGINEERINGTRAVIS SIXELPhone: (920) 574-2652Email: firstname.lastname@example.org
PARTS ORDER & FIELD SERVICE BRAD THERNPhone: (920) 574-2653Email: email@example.com
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