An electrohydrodynamic (EHD) gas pump inside a square channel is experimentally evaluated for its effectiveness in flow delivery. The gas pump with three sets of electrode assemblies (separately with one, three, and seven emitting electrodes) is powered by DC voltages ranging from 24 to 30 kV. The emitting electrodes are flush mounted on two channel walls parallel to each other. The main objective is to investigate the number of emitting electrodes as well as their location on the performance of the pump. The performance of the pump is evaluated using the parameter of power efficiency, which is defined as the volume flow rate delivered by a unit power input. Whereas the EHD gas pump with all three configurations produces a power efficiency that is comparable to or higher than that of conventional fans, the one with three emitting electrodes has the highest values of all. This indicates that an EHD gas pump has a great potential for applications in thermal management and can be more energy-efficient when compared with conventional fans.

通过实验评估方形通道内的电流体动力 (EHD) 气泵在流量输送中的有效性。具有三组电极组件（分别带有一个、三个和七个发射电极）的气泵由24至30 kV的直流电压供电。发射电极齐平安装在两个彼此平行的通道壁上。主要目的是研究发射电极的数量以及它们对泵性能的影响。使用功率效率参数评估泵的性能，功率效率定义为单位功率输入提供的体积流量。而具有所有三种配置的 EHD 气泵产生的功率效率与传统风扇相当或更高，具有三个发射电极的那个具有最高的值。这表明 EHD 气泵在热管理方面具有巨大的应用潜力，并且与传统风扇相比更节能。