Full-scale measurements of thrust and power of inverter-driven jet-fans

Ichiro Nakahori, Toshiaki Sakaguchi, Shigeru Abe, Alan Vardy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Full-scale measurements of the performance of a jet fan operating at speeds ranging from 20% to 100% of full-speed are presented. The purpose of the tests was to assess predicted power savings resulting from using several fans at low speed to deliver the same thrust as fewer fans at full-speed. The measurements allow for electrical losses in cables and in inverters used to achieve variable-speed control. The expected savings are confirmed and quantified. The tests were conducted in a factory environment enabling high quality measurements to be obtained, thereby leaving no room for doubt about the savings. However, further tests in a tunnel environment are still required to complete the work - to assess whether multiple low-thrust jets have the same influence on tunnel air flows as fewer higher-thrust jets with equal total thrust. Although the principal objective of the paper is to present unambiguous experimental evidence, a theoretical background is also presented, highlighting some difficulties with a conventional analysis of jet-fan performance.

Original languageEnglish
Title of host publicationProceedings of the 18th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels (ISAVFT 2019)
PublisherBHR Group Limited
Pages419-431
Number of pages13
ISBN (Print)9781713813583
Publication statusPublished - Jul 2020
Event18th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels, ISAVFT 2019 - Athens, Greece
Duration: 25 Sep 201927 Sep 2019

Conference

Conference18th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels, ISAVFT 2019
CountryGreece
CityAthens
Period25/09/1927/09/19

Fingerprint Dive into the research topics of 'Full-scale measurements of thrust and power of inverter-driven jet-fans'. Together they form a unique fingerprint.

  • Cite this

    Nakahori, I., Sakaguchi, T., Abe, S., & Vardy, A. (2020). Full-scale measurements of thrust and power of inverter-driven jet-fans. In Proceedings of the 18th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels (ISAVFT 2019) (pp. 419-431). BHR Group Limited.