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

doi:10.12096/j.2096-4528.pgt.22008

Abstract

Abstract:

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.

Key words: electrogasdynamic power generation, normal temperature air, corona discharge, high voltage, exposed electrode structure

CLC Number:

TK 01

Minghui KE, Lin LAI. Experimental Research of Electrogasdynamic Power Generation With Exposed Electrode Structure Based on Normal Temperature Air[J]. Power Generation Technology, 2024, 45(1): 180-188.

Figures/Tables 22

Fig. 1 Experimental system diagram

Fig. 2 Electrogasdaynamic high-voltage power generation device

Fig. 3 Main dimensions of electrogasdaynamic high-voltage power generation device

Fig. 4 Physical map of electrogasdaynamic high-voltage power generation device

Fig. 5 Circuit connection mode 1

Fig. 6 Collected voltage changes with different air pressures

Fig. 7 Collected power changes with different air pressures

Fig. 8 Emitter current changes with different air pressures

Fig. 9 Corona power changes with different air pressures

Fig. 10 Net power changes with different air pressures

Fig. 11 Collecting voltage changes under different conversion section lengths

Fig. 12 p-Us curves at different load resistances

Fig. 13 p-Ps curves at different load resistances

Fig. 14 p-I curves at different corona voltages

Fig. 15 p-Ri1 curves at different corona voltages

Fig. 16 p-Ri2 curves at different corona voltages

Fig. 17 p-Ps curves at different corona voltages

Fig. 18 U-Rp curves at different air pressures

Fig. 19 U-Pe curves at different air pressures

Fig. 20 Circuit connection mode 2

Fig. 21 p-Pr curves under two connection methods

Fig. 22 p-Us curves under two connection methods

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