Electrical energy conversion characteristics based on underwater high-voltage pulse discharge

• Autorzy: Yan Dong , Chen Songbai , Wu Qiong , Zhang Fengxiang , Lai Lipeng , Chen Inchen
• Języki publikacji: EN

Abstrakty

EN

Underwater high-voltage (HV) pulse discharge mainly involves the process of HV discharge, breaking down water and releasing huge amounts of electrical energy, which is then rapidly converted into plasma. The plasma expands and creates shock waves and bubble pulsation effects. These effects are the main ways in which electrical energy transfers into mechanical energy. A breakdown process analysis model and an experimental method are proposed with a view to revealing the energy conversion characteristics during underwater pulse discharge and to understand the basic physical process. A plasma channel model was established in combination with the existing fundamentals of electricity and theoretical analysis. In addition, the discharge process was analyzed, along with shock wave and bubble pulsation action characteristics, on the basis of an underwater pulse discharge experiment. Meanwhile, theoretical analysis revealed the basic physical process involved in the electrical energy conversion effect. The results demonstrate the following: (1) The vaporization-ionization" breakdown model divides the breakdown process into three stages (i.e., heating effect, breakdown detonation and mechanical energy effect stages); (2) the heating effect stage is a phase prior to breakdown, which possesses significant heating characteristics and generates initial plasma; (3) a large electric current (104A) during the breakdown process heats the plasma channel to a high-temperature, where it becomes dense; this condition is followed by an instant decrease in channel resistance; the breakdown current peak depends on the residual voltage at the moment of breakdown; (4) during the breakdown detonation stage, discharge breakdown occurs, along with electric arc detonation. After the heating gasification process, when the electrical field intensity is suficient, the high-temperature HV plasma rapidly expands outward, resulting in a rapid conversion from electrical energy to mechanical energy. Thus, shock waves are formed, followed by bubble pulsation. The proposed method provides a good prospect for the application of underwater HV pulse discharge technology in the field of engineering.

Słowa kluczowe

EN

underwater pulse discharge; electrical energy conversion; breakdown process; thermal effect; mechanical effect

PL

wyładowanie impulsowe; energia elektryczna; konwersja energii; proces rozkładu; efekt termiczny; efekt mechaniczny

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2021
• Tom: Vol. 101, nr 4
• Strony: 190--201
• Opis fizyczny: Bibliogr. 26 poz., fot., rys., wykr.

Twórcy

autor

Yan Dong

• College of Architecture and Civil Engineering, Xinyang Normal University, Henan Province, 464000, China

autor

Chen Songbai

• College of Architecture and Civil Engineering, Xinyang Normal University, Henan Province, 464000, China

autor

Wu Qiong

• College of Architecture and Civil Engineering, Xinyang Normal University, Henan Province, 464000, China

autor

Zhang Fengxiang

• College of Architecture and Civil Engineering, Xinyang Normal University, Henan Province, 464000, China

autor

Lai Lipeng

• College of Architecture and Civil Engineering, Xinyang Normal University, Henan Province, 464000, China

autor

Chen Inchen

• College of International Exchange, Krirk University, Bangkok, 10220, Thailand

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).