In addition, the pressure and velocity in cooling fan flow field are analyzed and the relations between flow rate, rotation speed, blade number and aerodynamic noise of cooling fan are studied.
同时，对风扇流场的压力和速度进行分析；研究了风扇流量、风扇转速、扇叶数和气动噪声相互之间的关系。
A new structure fan with small size, high pressure and low flow-rate is designed to meet the demands of industry.
为满足工业领域对高压比、低流量风机的需求，设计了一种新型结构的小尺寸、高压比、低流量风机。
In large warehouse, a control test of lowering temperature with exhaust fan and other equipment in lowering temperature, ventilating efficiency, air flow rate and moisture content was carried out.
用排气扇与各种通风方式对高大平房仓进行降温对比试验，将试验仓与对比仓的降温情况、通风效率、表观风速和水分变化进行比较。
应用推荐