Experimental Research of Electrogasdynamic Power Generation With Exposed Electrode Structure Based on Normal Temperature Air

In order to explore the influencing factors and laws of the basic process of electrogasdynamic power generation, a simple electrogasdaynamic high-voltage power generation test device with exposed electrode structure was designed based on the basic theory of electrogasdaynamic power generation. Based on this device, high-pressure air was used as the working medium, high-speed airflow was generated through sonic nozzles, and charged particles were generated by corona discharge at the exposed needle electrode. The influences of structural and electrical parameters such as total gas pressure, conversion section length, load resistance, applied voltage, and circuit connection on the voltage and power of electrogasdynamic power generation were studied. By reasonably configuring the parameters of the power generation device, a collection voltage of 4.41 times the corona voltage or a collection power of 3.53 times the corona power was obtained. The research shows that the electric potential is parabolically distributed along the conversion section. The greater the load resistance, the higher the collection voltage. As the applied voltage increases, the larger the collection power, the smaller the ratio of the collection power to the corona power.