This document describes the features and characteristics of products such as SUNON MagLev, Power Motor, and Mighty Mini Fan, as well as how to measure airflow and select the right fan or blower.
The Sunon MagLev engineering guide explains the principles behind MagLev cooling technology, including power motors, mini fans and EMI solutions. It walks the reader through the three steps to determine total cooling requirements, system resistance and the optimal operating point.
The document provides practical methods for selecting the right fan or blower, shows air performance curves for typical Sunon DC fans (e.g., 60×60×25 mm) and offers design considerations such as minimizing airflow resistance and handling filters. This manual is written in Chinese.
| Typical fan size | 60 × 60 × 25 mm |
|---|---|
| Air flow at Point A | 6 CFM |
| Basic heat transfer equation | H = Cp × W × T |
They are based on three factors: the heat to be transferred, the heat transfer in watts, and the required airflow in CFM.
System resistance is expressed as P = K × Qⁿ, where K is the system characteristic constant, Q is airflow, and n is the turbulence factor (1 < n < 2).
The guide uses H = Cp × W × T, where H is heat transferred, Cp is specific heat of air, W is mass flow, and T is temperature rise.