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Nyborg AS
Axial Flow Fans

Axial Flow Fans

Product catalog summary

Applications
The Nyborg axial fans are specifically designed for heavy-duty marine applications. They are available in sizes ranging from ø250 to ø1600, with capacities reaching up to 200,000 m³/h and static pressures up to 1600 Pa.

Construction and Materials
The MPV fans are constructed from mild steel and are hot-dip galvanized to ensure durability in marine environments. Optional materials include stainless steel (aisi304/316) and aluminum for enhanced resistance.

Impeller Types

MPV-A1: This type features an A impeller without guide vanes, suitable for high air volumes and low to moderate pressures. It is made from seawater-resistant aluminum and offers a reversible capacity of approximately 60%.
MPV-D1: This type is equipped with a D impeller and guide vanes for higher pressures and efficiency. It is also made from seawater-resistant aluminum and features a variable pitch.

Casing Models

MPV-A1K/D1K: Designed as a tube fan for duct installation, it includes an inspection cover and cable glands.
MPV-A1E/D1E: Features a short casing with an inlet cone for improved performance, with the motor positioned outside for easy access.
MPV-A1B: Wall-mounted design with an inlet cone and protection grid.
MPV-A1M/D1M: Swing-out construction for easy maintenance.

Electric Motor
The standard motors are TEFC squirrel cage inductive motors, IP55, insulation class F. Options include EX motors for increased safety and explosion-proof designs, with additional features like anti-condensing heating elements and vibration monitoring.

Special Designs
Special designs include spark-proof configurations, thick casing options, and setups for extra high pressures.

Accessories
Available accessories include counter flanges, foundation supports, protection grids, flexible connections, and external terminal boxes.

Sound Power Levels
Sound power levels are provided for various fan models at different RPMs, with dB values across frequency ranges. These values serve as a guide for calculating sound pressure levels.

Performance Overview
The document provides performance data for various models of Nyborg Vaneaxial Fans, detailing specifications such as speed, power consumption, static pressure, and acoustic pressure levels at different operational angles.

Specifications

Fan models include MPV 900 D1, MPV 1000 D1, MPV 1120 D, MPV 1250 D1, MPV 1400 D, and MPV 1600 D1.
Operational speeds range from 700 rpm to 1750 rpm, with power consumption varying based on the angle of operation.
Static pressure and airflow (Q) are provided in graphs for each model, indicating performance at different speeds and angles.

Performance Data

MPV 900 D1 at 1750 rpm: Power ranges from 13.2 kW to 21.2 kW depending on the angle (45° to 55°).
MPV 1000 D1 at 960 rpm: Power ranges from 3.3 kW to 6.0 kW (50° to 60°).
MPV 1120 D at 985 rpm: Power ranges from 6.2 kW to 13.3 kW (45° to 60°).
MPV 1250 D1 at 1180 rpm: Power ranges from 19.8 kW to 30.0 kW (50° to 60°).
MPV 1400 D at 950 rpm: Power ranges from 34.9 kW to 59.8 kW (50° to 65°).
MPV 1600 D1 at 890 rpm: Power ranges from 33.5 kW to 54.0 kW (45° to 55°).

Acoustic Data

Acoustic pressure levels are provided for each model, with values ranging from 87 dB(A) to 107 dB(A) depending on the model and operational conditions.

Efficiency

Efficiency (ηmax) varies across models and operational conditions, with values typically around 80% to 85%.

Key Observations

Higher speeds and angles generally result in increased power consumption and acoustic pressure levels.
Efficiency remains relatively stable across different operational conditions.

Catalog excerpts

AXIAL FANS & VANEAXIAL FANS APPLICATIONS The Nyborg axial fans are heavy duty fans designed for marine applications. The fans are delivered in sizes from ø250 to ø1600 with capacities up to 200.000 m3/h and static pressures up to 1600 Pa. MPV – D1 With D impeller for fan with guide vanes: The axial fans with the D impeller is equipped with guide vanes for higher pressures and efficiency. The impeller is made of sea water resistant alum and has variable pitch to easier suit different capacities and pressures. Due to the guide vanes the fan can achieve pressures up to 1600 Pa. EXECUTION The MPV fans are heavy duty fans designed for marine applications, manufactured in mild steel, hot dip galvanized. CASING The MPV fan is made in four models OPTIONAL EXECUTION Fan in stainless steel execution (aisi304/316) Fan in alum execution, IMPELLER: The MPV fans are made in two versions with two different impellers: MPV-A1 – with A impeller for fan without guide vanes A simple and robust design often makes this the most cost effective alternative. The impeller is made of sea water resistant alum and is cast id one unit and has a high reversible capacity (approx 60% of normal capacity). The model is most suitable for high air volumes and low to medium/moderate pressures. The fan with the A impeller also have a small “stall” area. For sizes from ø250 up to ø500mm the fan can be delivered with an impeller made of reinforced polypropylene. with variable pitch. MPV – A1K/D1K – tube fan for installing in duct or end of duct, with inspection cover and cable glands in casing MPV – A1E/D1E – for duct connection / duct end installation. The fan is with short casing and inlet cone for better performance. The motor is outside of the casing for easy accessability. As standard a protection grid is fitted to the fan. MPV – A1B – for wall mounting The fan is with inlet cone for smaller pressure drop and better performance and is delivered with a protection grid (wire guard) as standard. MPV – A1M/D1M – for installing in duct or duct end. The fan is a swing out construction where motor and impeller can be swung out for maintenance (and inspection).

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AXIAL FANS & VANEAXIAL FANS SPECIAL DESIGNS • Spark proof execution/design with anti spark track • Thick casing, 6, 8 or 10mm thickness • Short casing (MPV – A1K/D1K) • special bolt division circle • fan with guide vanes before and after impeller for extra high pressures ELECTRIC MOTOR The motors are as standard TEFC squirrel caged inductive electric motors in marine execution. Motors are IP55 and insulation class F as standard. The fans can also be equipped with EX motors class Exe (increased safety) , Exd or Exde (explosion-/flameproof) or EXN motors. Motor options: • IP56, IP65 or IP66, •...

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AXIAL FANS

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NYBORG AXIAL FLOW FAN Type "B" GENERAL DESCRIPTION : AXIAL FLOW FAN, MPV-A1B, is a medium pressure axial fan, designed for wall mounting. The MPV-A1B is made in heavy duty design, for industry, mining, marine and offshore applications. Spark proof execution is also available. FAN FRAME and MOTOR PEDESTAL are made of steel (st.37), and are hot dipped galvanized. Other materials are also available as options like AISI 316L or Alum. The IMPELLER is designed for high efficiency and low noise. The impeller is made of a salt- and amoniaresistive aluminium alloy or PAG. WIRE GUARD: Included. MOTOR :...

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NYBORG AXIAL FLOW FAN Type "E" Contra Flange Wire Guard Motor Bracket Item Description

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NYBORG AXIAL FLOW FAN Type "K" Motor Pedestal Ext. Terminal Box, Option Cable Entry Motor Inspection Cover

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NYBORG AXIAL FLOW FAN Type "M" Wheel Ext.Terminal Box, Option Cable Entry Hinges Hand-Grip on Door El.Motor Motor Pedestal Impeller

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SOUND POWER LEVELS (SWL) CALC. NYBORG AXIAL- FLOW FANS 50Hz dB values at centre Hz Impeller • Sound power levels in dB. ref. 10 -12 W, internal values in fan openings. • dBA values applies to 1 m. distance based on a theoretical free field environment. • The sound power level values above are only intended as a guide, and may be used for calculations for sound pressure levels. (heard by the human ear).

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SOUND POWER LEVELS (SWL) CALC. NYBORG AXIAL – FLOW FANS • Sound power levels in dB. ref. 10 -12 W, internal values in fan openings. • dBA values applies to 1 m. distance based on a theoretical free field environment. • The sound power level values above are only intended as a guide, and may be used for calculations for sound pressure levels. (heard by the human ear).

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ACCESSORIES for AXIAL FANS Foundation (Weld Neck) Counter Flange Flexible Connection (with or without vibration dampers) Wire Guard Flexible Connection (simple) Feet Support

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ACCESSORIES for AXIAL FANS Flexible Connection (w vibration dampers) Foundation (Weld Neck) Flexible Connection Counter Flange Vibration insulating connection Counter Flange Vibration insulating connection

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