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Mining & Industrial Fan Questions & Answers

Q&A on mining and industrial fans – types and application scenarios.

Q

What type of motor do fans use?

Fans can use several different types of motor, depending on size, power supply and application. In general, large industrial and mining ventilation fans use AC induction motors, while smaller fans and
Q

How to tell what direction a fan blows?

There are several reliable ways to tell what direction a fan blows, and they apply to both industrial fans and mining ventilation fans. You should always confirm airflow direction before installing or
Q

What CFM should a fan motor provide?

Strictly speaking, CFM is a property of the fan and system, not of the motor. CFM (cubic feet per minute) describes how much air the fan moves at a given operating point. The motor’s job is to supply

Q

What is the BHP curve of a fan?

The BHP curve of a fan is the part of the fan performance chart that shows how brake horsepower (BHP) varies with airflow at a given speed. It is plotted alongside the pressure and efficiency curves a
Q

Is a fan motor the same as a blower motor?

In many cases, a fan motor and a blower motor are essentially the same kind of electric motor. The terms “fan motor” and “blower motor” usually describe how the motor is used rather than a completely

Q

How to calculate bhp of fan?

Calculating the brake horsepower (BHP) of a fan means determining how much mechanical power the fan needs at its shaft to deliver a certain airflow and pressure. This is essential for sizing motors an
Q

What is the difference between BLDC motor and normal motor?

The main difference between a BLDC motor and a “normal” motor lies in how the magnetic field is created and switched. In everyday fan applications, “normal motor” usually means an AC induction motor.

Q

What is the difference between HP and BHP fan motors?

HP and BHP are related but not identical concepts in fan applications. Understanding the difference between motor horsepower (HP) and fan brake horsepower (BHP) is essential for correct motor selectio
Q

What is the strongest type of fan?

When people ask about the strongest type of fan, they often think of a household fan that blows the hardest. In industrial and mining ventilation, “strongest” usually means the fan that can move the m
Q

What are the disadvantages of a fan regulator?

Fan regulators are simple devices used to control fan speed, but they have several disadvantages compared with modern electronic drives. In small ceiling fans and some light-duty industrial fans they

Q

Should fans be in series or parallel?

Whether fans should be in series or parallel depends on what you need from your ventilation system. Using multiple fans can be a good way to increase performance, but the arrangement must be chosen an
Q

How to make control fan speed?

To control fan speed effectively in industrial plants and mines, you should focus on methods that adjust the fan’s rotation speed rather than just throttling the airflow. True speed control improves e
Q

Do fans in series increase airflow?

Fans in series do not directly increase the free airflow of the fan; they mainly increase the available pressure. This distinction is important. When you place two identical fans one after another in

Q

What is the difference between centrifugal fan and normal fan?

When people ask about the difference between a centrifugal fan and a “normal” fan, they usually mean the difference between a radial centrifugal fan and a common axial or propeller fan. Both are norma
Q

How to maximize airflow with a fan?

Knowing how to maximize airflow with a fan is essential for getting the most out of your ventilation system. Whether you are dealing with a workshop, an industrial plant or an underground mine, the ai
Q

How to fix vibration or wobble in industrial ventilation fans?

Vibration or wobble in industrial ventilation fans is a warning sign that should never be ignored. In mining and plant ventilation systems, excessive vibration can damage equipment, shorten bearing li
Q

What style of fan moves the most air?

When people ask what style of fan moves the most air, they are usually thinking about total volume of air moved, or how strongly the airflow is felt in a room or tunnel. The answer depends on the envi
Q

Are centrifugal fans better than axial fans?

Centrifugal fans are not automatically better than axial fans, and axial fans are not automatically better than centrifugal fans. Each type has advantages and limitations, so the best choice depends o
Q

Are centrifugal fans reversible?

People often ask whether centrifugal fans are reversible, especially when they want a single fan to handle both supply and exhaust duties. In theory you can reverse the rotation of almost any electric
Q

What is the static pressure curve of a fan?

The static pressure curve of a fan is part of the fan performance chart that shows how static pressure varies with airflow at a given speed. It is one of the key tools engineers use to select and appl
Q

How many types of fans are available?

When people ask how many types of fans are available, they are usually surprised by how many variations exist beyond simple household fans. In engineering practice, especially for industrial and minin
Q

Is higher static pressure better for fans?

Higher static pressure is not automatically better for fans. What matters is that the fan can deliver the required airflow at the static pressure demanded by the system. Extra pressure beyond what the
Q

What are those huge fans called?

When someone points at a massive unit on a ceiling or at the mouth of a tunnel and asks, “What are those huge fans called?”, the answer depends on the setting. In large buildings and warehouses, they

Q

Do you want high or low static pressure?

You do not choose high or low static pressure in isolation; the “right” static pressure is the value your ventilation system actually needs at the required airflow. A well designed fan selection match
Q

Which fan type is best?

Asking which fan type is best is a bit like asking which vehicle is best—truck, car or bus. The answer depends entirely on what you are trying to do. In ventilation engineering, the main fan types are
Q

How to plot a fan curve?

To plot a fan curve you need measured or manufacturer data showing how airflow, pressure and power change at different operating points for a given fan speed. From these data you graph pressure versus
Q

Which is better centrifugal fan or ID fan?

When people ask whether a centrifugal fan or an ID fan is better, it is important to understand that an ID fan is not a completely different fan type. In most boiler houses, power plants and heavy ind
Q

What is the static pressure of a ventilation fan?

The static pressure of a ventilation fan is the pressure the fan can develop to overcome system resistance at a particular airflow. It is not a single fixed number for the fan; instead, it varies alon
Q

What is considered a high velocity fan?

A high velocity fan is generally understood to be a fan that produces a concentrated air stream with a relatively high outlet speed, rather than a gentle, broadly distributed flow. Instead of just mov
Q

What is the PQ curve of a fan?

The PQ curve of a fan is the graph that shows the relationship between pressure (P) and airflow (Q) for that fan at a given speed. It is the core part of the fan performance chart and is essential for

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