Geoff Sheard Presents to National Academy of Engineering

National Academy of Engineering Workshop – Engineering a Quieter America: Progress on Consumer and Industrial Product Noise Reduction

Geoff Sheard was invited to present a paper titled, “Large Industrial Air movement Devices” as part of the two-day workshop, “Engineering a Quieter America: Progress on Consumer and Industrial Product Noise Reduction.”

Large Industrial Air Movement Devices Presentation 10052015

The workshop was held in Washington, DC on October 6th and 7th 2015 and was sponsored by the National Academy of Engineering. The National Academy of Engineering is an organization of outstanding engineers. It is autonomous in its administration and in the selection of its members, sharing with the National Academy of Sciences the responsibility for advising the federal government. The National Academy of Engineering also sponsors engineering programs aimed at meeting national needs, encourages education and research, and recognizes the superior achievements of engineers.

The National Academy of Engineering is part of The National Academies of Sciences, Engineering, and Medicine. It operates under the same congressional act of incorporation that established the National Academy of Sciences, signed in 1863 by President Lincoln. Under this charter the National Academy of Engineering is directed “whenever called upon by any department or agency of the government, to investigate, examine, experiment, and report upon any subject of science or art.”

The workshop “Engineering a Quieter America: Progress on Consumer and Industrial Product Noise Reduction” focused on developing and deploying technologies for noise control.  The workshop reviewed progress made by noise control engineers over the past two decades on noise reductions of consumer products inside and outside the home, and industrial products.

Geoff’s presentation focused on the implications for fan noise of current European and forthcoming US regulation mandating minimum allowable fan efficiencies, concluding that:

  • The forthcoming regulatory environment in the USA will by 2020 mandate minimum allowable fan efficiency.
  • The market for air movement fans is characterized by shifting customer demand towards either the same fan noise with increased air performance, or the same air performance at reduced fan noise.
  • In combination forthcoming regulatory requirements and customer demand will require a significant proportion of air movement fans sold today to be optimized or replaced. The number of air movement fans that will require optimization or replacement is high enough to make necessary the adoption of computational methods.
  • Empirical design methods are neither capable to delivering new products that reach both the required efficiency and noise or delivering the volume of new products needed prior to the 2020 introduction of minimum allowable fan efficiency levels in the US.
  • Computational methods will increasingly be used to both design air movement fans and predict air movement fan air performance.
  • The academic community working with the air movement fan community is focused on developing computational methods that can predict fan broadband noise and spectrum.
  • By 2020 the air movement fan community will be using computational methods to design fans, predict their air performance, broadband noise and spectrum and in so doing facilitate the development and introduction of new products that meet or exceed forthcoming regulatory and customer requirements.