What are the points to consider when selecting fans?

As equipment becomes more powerful and denser, it generates more heat, making cooling technology increasingly important.
Understanding the characteristics and operating conditions of fans and selecting the optimal fan are important for improving equipment performance.

1. ファンの選定で見るべきポイント

We have picked out some key points and are introducing them here. For more information, please download the free document that summarizes the basic knowledge in an easy-to-understand manner and make use of it.

1. Size

It is necessary to select an appropriate size fan depending on the size of the device and the amount of heat generated.
A fan that is too large will take up unnecessary space, and a fan that is too small may not provide sufficient cooling.

2. Power supply specifications

It is necessary to check the voltage, frequency, power consumption, etc. and select a fan that is compatible with the existing power system. If you use it in a different country or region, be careful because the power specifications are different.

3. Air volume, static pressure, and rotation speed

The air volume of a fan is the amount of air that is blown out, and static pressure is the force that the air exerts on the surroundings when it is stationary. In addition, the air volume of a fan is basically proportional to the rotation speed, and static pressure is proportional to the square of the rotation speed.

For more information, see "Fan Basics" Lesson 4: Fan Airflow and Static Pressure

4. Ventilation resistance of the device

"Ventilation resistance" refers to the difficulty of air flowing inside a device, and the point where the device's "ventilation resistance" and the fan's "air volume-static pressure characteristics" intersect is called the "operating point." The fan's "operating air volume" can be calculated from this "operating point."

For details, see [Fan Basics] Lesson 7: Airflow Resistance of Equipment

5. Operating environment

Cooling fans may not perform as well as they should, depending on the installation environment. It is necessary to select a fan taking into consideration temperature, humidity, and the presence of dust.

For more information, see [Fan types and features] Features of environmentally resistant fans, Splash Proof Fan Oil Proof Fan, Wide Temperature Range Fan, and G Proof Fan.

6. Noise Level

The fan specifications state the sound pressure level when the fan is rotating at its rated speed. In environments where people are present nearby, a quiet design may be required.

For more information, see [Fan Basics] Lesson 6: Fan Noise and Sound Pressure Levels

7. Lifespan

The lifespan of the fan determines the lifespan of the equipment. If the fan's lifespan is shorter than that of the equipment, the fan will need to be replaced as part of equipment maintenance.

For details, see [Fan Basics] Lesson 3: Fan Lifespan

8. Customizability

If you need to customize the product to meet your specific requirements or environment, choosing a manufacturer that can flexibly accommodate your needs will contribute to the success of your project. Also, make sure the customized parts are covered by the warranty.

2. 条件からファンを絞り込む

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3. By purpose: Examples of fan selection

• Long-term maintenance-free operation required: Long Life Fan
• Want to take measures against oil mist: Oil Proof Fan (Example of machine tool manufacturer P)
• Splash Proof Fan: Protecting against rainwater when used outdoors​
• High device mounting density: Counter Rotating Fan
• Want to reduce power consumption and noise: ACDC Fan (Example of control panel manufacturer A)

SANYO DENKI CO., LTD. offers a diverse lineup of fans,
We support our customers' businesses by providing various customizations to meet their requests and 100% inspection of fans.

Download free materials that summarize basic knowledge in an easy-to-understand manner

Contents of the document

• The general process for selecting fans
• Things to check when selecting a fan
  • size·
  • Rated voltage
  • Cooling performance (air volume, static pressure, rotation speed)
  • Sensor Specifications
  • PWM control function
  • How to reduce noise
  • How to reduce power consumption
• Points to note when selecting AC Cooling Fan
• How to select the best fan for your device

Release date: 2024-10-09 00:00