Variable Inlet Vane Dampers (Radial Vane Dampers) for Fan Efficiency
Key features:
- Hubluxe make Inlet vane damper / radial vane damper are designed to reduce energy cost & enhance system performance
- Every damper is compact & custom designed, built to fit directly to a specific fan manufacturer’s inlet flange
- Open, capped or bullet nose hub to increase performance
- As compared to Butterfly damper & rectangular damper, the inlet vane damper offers much better control
- Depending on the position of the blades, the inlet guide vane generates a pre-whirl which changes the fan’s performance curve
- Optimal design with aerodynamic flow & standard design temperature to 1200 (Deg.) C
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Hubluxe’s Variable inlet vane damper (VIV) or guided vane sometimes also called radial vane dampers are often used for capacity modulation. At reduced airflow they allow accurate modulation and power savings over other types of dampers. Hubluxe make Variable inlet vane or radial vane dampers are multi blade design best suited for fan inlet to enhance the fan performance.
For every inlet vane position, there is different capacity v/s static pressure curve and capacity v/s brake horsepower curve generated by the blower fan.
When the inlet vanes are partially closed, each blade directs the air in the direction of the impeller’s rotation. This action brings about reduction in the capacity, static pressure and (brake horsepower) BHP.
The resulting BHP savings at reduced capacity depends on the type of system and the type of blower-vane combination.
Variable Inlet vane Damper / Guided vane damper technical specifications:
Product: ‘HUBLUXE’ Variable Inlet vane Damper / Radial vane damper
Size: 200 mm to 2000 mm (higher size on request)
Body Material of construction (MOC): MS fabricated (IS 2062 GR. B) / SS 304 / SS 316 (other special materials on request)
Shape: Round
Pressure: 0.5 bar to 1 bar
Operation: Manual, Pneumatic & Electrical actuator operation
Application: Fan inlet duct / pipe
Standard construction features of Variable Inlet Vane Damper:
Characteristics range of Variable Inlet vane damper:
As compared to Butterfly damper and rectangular damper the variable inlet vane guide damper offers much better control.
Depending on the position of the blades, the inlet guide vane generates a pre-whirl which changes the fan’s performance curve. The power requirement curve of the fan also changes as per the change in angle.
The direction of the pre-whirl must always be in the same direction to that of fan’s rotation (refer to the figure).
Stall at guiding blade of inlet guide vane damper:
By reducing the flow excessively by inlet vane damper will result into a critical stall at guiding blades under specific conditions. These are unfavourable flow conditions and small range of angle when the guiding vanes strongly to almost closed.
Such critical stall are avoided by an optimal design of aerodynamic inflow and by not setting the vanes to the special critical angle.
Setting the inlet guide vane damper to > 600 (degree) should be avoided by all means.
The HUBLUXE make Inlet Vane Damper is suitable for flue gas, automotive, and oven recirculation systems. Mostly used in:
- Fan Inlet Control
- Exhaust systems
FAQs (Frequently asked questions)
Find detailed answers to common questions about Variable Inlet / Radial Vane Damper in our Knowledge centre.
An inlet vane damper or radial vane damper is round in shape, mounted at inlet of the fan. Its primary function is to enhance the performance of the fan. By developing a positive swirl distribution at the inlet of the fan this facilitates the fan operation & thereby reducing the horsepower consumption.
Hubluxe Engineering is a prominent manufacturer provides industry-leading inlet vane damper, trusted by major projects in the GCC, KSA, Southeast Asia (Malaysia, Indonesia, Thailand), and Australia.