摘要：本文通过理论公式推导计算、经验分析计算、热仿真分析计算，得到了DKHR500风机在4500m海拔条件下所需要的风量，利用这些方法也可以得到不同型号风机在不同海拔条件下所需风量大小，为设计人员设计选型提供了思路。

关键词：高海拔地区;风机风量

Abstract: This DKHR500 type fan capacity is obtained at 4500m altitude through Theoretical formula derivation calculation, empirical analysis calculation, thermal simulation analysis calculation. The capacity of different types fan is also obtained by these approaches at different altitudes, and it could provide references for designers.

Key words: