Pumps and fans are crucial components of various systems, including ventilation, air conditioning, and cooling. Many studies focus on optimizing traditional devices, but modern systems require compact, low-noise, and energy-efficient solutions. Typical high-speed fans generate significant noise, prompting exploration of alternatives. This study investigates an electrohydrodynamic bladeless fan with two electrodes: an emitting needle and a grounded ring. Flow is generated by corona discharge and air ionization. A two-element prototype that allows configuration changes was tested. Airflow patterns induced by an electrohydrodynamic fan were analyzed using Stereo Particle Image Velocimetry. Results show that electrode spacing significantly impacts performance. While a 22 mm gap at 24 kV yielded the highest flow rate over 0.23 dm3/s, the most efficient setup was 11 mm with voltages 10–15 kV, producing up to 0.2 dm3/s. The study confirms the EHD fan’s potential as a compact, quiet alternative for airflow generation in modern systems.

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An Analysis of the Airflow Patterns of an Electrohydrodynamic Fan

  • Marek Jaszczur,
  • Klaudia Zwolińska-Glądys,
  • Marek Borowski

摘要

Pumps and fans are crucial components of various systems, including ventilation, air conditioning, and cooling. Many studies focus on optimizing traditional devices, but modern systems require compact, low-noise, and energy-efficient solutions. Typical high-speed fans generate significant noise, prompting exploration of alternatives. This study investigates an electrohydrodynamic bladeless fan with two electrodes: an emitting needle and a grounded ring. Flow is generated by corona discharge and air ionization. A two-element prototype that allows configuration changes was tested. Airflow patterns induced by an electrohydrodynamic fan were analyzed using Stereo Particle Image Velocimetry. Results show that electrode spacing significantly impacts performance. While a 22 mm gap at 24 kV yielded the highest flow rate over 0.23 dm3/s, the most efficient setup was 11 mm with voltages 10–15 kV, producing up to 0.2 dm3/s. The study confirms the EHD fan’s potential as a compact, quiet alternative for airflow generation in modern systems.