With the same purpose parameters, main ventilation axial fans have the construction part 4 times cheaper and the mechanical part (metal) 1.5-2 times lighter than centrifugal fans. Thus, the cost of the main ventilation unit with axial fans is at least half lower.
Compared to centrifugal fans, axial ones have 6 times less rotor mass (rotating parts) and removable impeller blades. Regarding long-term operating conditions with significant abrasion and corrosive metal wear, axial fans have better repairability and lower operating costs on restoring worn parts.
The advantages of axial fans over centrifugal ones are so essential that on several mines in Russia, Ukraine, and Kazakhstan with old worn-out centrifugal fans installed, the alternative to replace them with axial fans is discussed today. This is especially topical in two cases: when the demand for air supply has significantly decreased and there is great over-consumption of energy by the old model fans due to low efficiency, and when there is a need to increase air supply but the existing new centrifugal fans do not provide this increase.
In the Republic of Bashkortostan (RF), two new VO-30/18AR axial fans have been operating on the foundations of old fans since February 2011 at the mine of Sibaysky branch of "Uchalinsky GOK" OJSC, in the VGP VTsD-47.5U building. Two VO-32/20AN axial fans were delivered to the State Enterprise "UK Krasnolimanskaya" (Ukraine) in January 2013 to replace the obsolete VTsD-31.5V2 fans. All new fans were manufactured by AMZ "VENTPROM" OJSC.