An Overview of The Different Types of Fan Drivers Offered By a Cooling Tower Manufacturer - PowerPoint PPT Presentation

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An Overview of The Different Types of Fan Drivers Offered By a Cooling Tower Manufacturer

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One of the components offered by a cooling tower manufacturer is the fan, which requires a mechanism, gear or driver. In this post, we will be focusing on the top four most commonly used fan drivers for cooling towers – PowerPoint PPT presentation

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Title: An Overview of The Different Types of Fan Drivers Offered By a Cooling Tower Manufacturer


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An Overview of The Different Types of Fan Drivers
Offered By a Cooling Tower Manufacturer
  • Submitted By Tower Tech Cooling Systems Pvt.
    Ltd

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  • Cooling towers are compost of different
    components that work together to make sure they
    function as they supposed to be. One of the
    components offered by a cooling tower
    manufacturer is the fan, which requires a
    mechanism, gear or driver. In this post, we will
    be focusing on the top four most commonly used
    fan drivers for cooling towers.
  • A cooling tower offered by a cooling tower
    manufacturer is typically compost of different
    components that work together to ensure that the
    system functions well. And one of the most
    important components of a cooling tower is the
    fan. The fan utilizes the air that circulates in,
    out, and around the cooling tower. Fans need a
    mechanism, gear or driver that regulate power and
    transfer energy from the motor to the blades
    either directly or indirectly. This gear enables
    the fan to rotate and serve its purpose.

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  • There are a number of gear types being used for
    this device, and each of them has its own
    respective features to offer, and a few drawbacks
    as well. Today, we will be discussing the top
    four most commonly used fan drivers for cooling
    towers.

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An overview of the different types of fan drivers
  • As mentioned earlier, we will be talking more
    about the four primary types of cooling tower fan
    drivers- the gear drive, belt drive, direct
    drive, and EC motor. We will also provide you
    with an overview of each type including the
    advantages and disadvantages of each fan drivers.

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1.Gear Drive
  • The gear drive is commonly used for larger
    horsepower applications. Like the gears of a
    manual-transmission automobile, gear drives
    operate in such a way that it regulates the speed
    of a motor engine just enough to power the fan
    shaft.
  • One good thing about gear drives is that they are
    durable and can survive in extreme conditions,
    considering they are placed inside the natural
    draft cooling tower. In a cooling tower system,
    heat and humidity are at higher levels. This high
    levels of temperature and humidity can easily
    damage the components inside the cooling system.
    Thankfully, gear drives are specially engineered
    to withstand such extreme environment.

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  • The gear drive, however, also comes with some
    cons. And one of these is its maintenance cost.
    Of the four types of fan drivers, the gear drive
    has the highest maintenance cost. It also has the
    highest potential for downtime. Also, caution is
    advised due to the tendency of the oil container
    to leak. Misalignments may also occur from time
    to time so it is essential that the driver should
    be checked on a regular basis.

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2. Belt Drive
  • Belt drives resemble a pulley, which uses an
    additional rotating shaft, and a belt that is
    simply powered by the motion of another source.
    From the main revolving energy source, the belt
    drive constantly processes the mechanical
    movement being produced through the pulley and
    the shafts. The speed of the rotation varies
    depending on the size of the sheave.
  • Belt drives do not have separate housing for
    their parts. They are not protected from the
    stress inside the FRP cooling tower and
    therefore, require extra monitoring and regular
    maintenance. Belt drive maintenance normally
    includes belt replacement and lubrication which
    should be done several times a year. The initial
    cost of the belt drive is quite low, but the
    maintenance costs increase as time goes by.

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3.Direct Drive
  • Unlike the belt drives, direct drives are quite
    expensive at first, but it does not require much
    maintenance afterward. In fact among the four
    drivers, it has the lowest maintenance cost and
    the lowest total cost of ownership as well.
    Direct drive also requires only very little
    relubrication. It also does not need an alignment
    or any transmission components.

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  • One of the common mechanisms of a direct drive is
    that it uses a magnet to connect the fan shaft to
    the motor. However, this requires a specialized
    electric motor with a designated magnet to hold
    the drive. This type of fan driver does not need
    pulleys and belts or gears. It does not need much
    assistance for installation either. Direct
    drives, however, need a VFD (Variable Frequency
    Drive), which regulates the speed of the fan
    shaft. The VFD also contributes to energy
    conservation.

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Other Concerns
  • Although these fan drivers are quite competitive
    when it comes to performance, you should not
    overlook the top concern which is safety. Yes,
    the tower may function perfectly, but you should
    also consider the risk of danger that the type of
    driver imposes upon the structure. Due to the
    development of new cooling tower technologies
    such as the EC motor and the direct drive, the
    performance of the older drives has become a
    major concern one of which includes the exposure
    of the belt drive to the other interior parts of
    the bottle cooling tower. This makes the driver
    more prone to malfunctioning and more vulnerable
    to heat and humidity. However, these can be
    remedied as well by new technologies.

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  • The bottom line is that, deciding which type of
    cooling tower fan driver to select requires
    careful consideration. It is vital that you
    evaluate every single aspect such as safety,
    maintenance, budget, and whether or not you need
    a heavy-duty type of motor. Weigh your options
    wisely and choose the best one that fits your
    needs.

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  • Tower Tech Cooling Systems Pvt. Ltd

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Thankyou
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