What Are the Common Technical Issues with Moisture-Resistant and High-Temperature-Resistant Fans?

What Are the Common Technical Issues with Moisture-Resistant and High-Temperature-Resistant Fans?

For moisture-resistant and high-temperature-resistant fans, since forced convection ultimately accelerates heat dissipation, the quality of these fans plays a decisive role in overall heat dissipation performance. Equipping systems with high-performance moisture-resistant and high-temperature-resistant fans is also a key factor. The primary factors ensuring smooth overall machine operation Airflow, speed, noise level, service life, and the type of bearings used in the fan blades—these are just a few of the many factors that determine the fan’s ultimate cooling performance. Airflow Airflow refers to the total volume of air expelled or drawn in by a moisture-resistant, high-temperature fan within one minute. When measured in cubic feet, the unit is CFM; when measured in cubic meters, it is m³/min. The most commonly used unit for airflow in moisture-resistant, high-temperature fans is CFM (approximately 0.028 m³/min). Airflow is a key indicator for measuring the cooling capacity of moisture-resistant, high-temperature fans. Clearly, the higher the airflow, the greater the cooling capacity of the fan. This is because the specific heat capacity of air is constant, and the greater the air volume—that is, the more air per unit of time—the more heat the air can dissipate. Of course, the cooling effect of a given air volume also depends on the airflow velocity. Airflow and Pressure Airflow and air pressure are two relative concepts. Generally speaking, to reduce costs, manufacturers designing high-airflow moisture-proof and high-temperature-resistant fans must sacrifice air pressure. While such fans can drive a large volume of airflow, the low air pressure means that the bottom of the heat sink—where there is little airflow—remains uncooled (there are fans with high speed and high airflow, but their cooling performance is poor). Conversely, high air pressure means lower airflow, resulting in insufficient cool air to exchange heat with the heat sink, which also leads to inadequate heat dissipation.