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How to properly select a fan or blower

Date: 2017-08-28
Number of visits: 40

How to properly select a fan or blower

All the design engineers who need to use the cooling fan for the motor and electronics must decide the amount of air required for a particular system to heat up, depending on the power consumption of the system and whether it can take enough heat to prevent System overheating occurs. The fact that the system's useful life will be reduced due to the lack of cooling systems, so the design engineer should also understand that the system's sales and prices may be due to the use of the system does not meet the user's expectations and decline.
To select the correct ventilation assembly, the following objectives must be considered:
The best air flow efficiency
The smallest fit size
The smallest noise
The minimum power consumption
Maximum reliability and service life
Reasonable total cost
The following steps to choose the cooling fan or fan can help you achieve these goals.
The first is to know the total cooling demand, to understand the total cooling demand then have the following three points
1, must convert the heat (ie, the temperature difference DT)
2, offset the amount of heat converted to the number of watts (W)
3, the amount of air required to remove the heat (CFM)
Total cooling requirements are important for efficient operation of the system. Efficient system operation must provide the ideal operating conditions, so that all components within the system can play the greatest function and the longest life.
Secondly, by understanding the total cooling demand, the amount of air required for the equipment is obtained by the following method.
1. Calculate the heat generated inside the device.
2. Determine the temperature rise range that can be allowed inside the device.
3. Calculate the amount of air required from the equation.
If you know the amount of heat dissipation inside the system and the allowable total temperature rise, you can get the amount of air required for cooling the equipment.

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