Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Capture envelopes of rectangular hoods in cross drafts.

R F Huang1, S Y Sir, Y K Chen

  • 1Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei. rfhuang@mail.ntust.edu.tw

AIHAJ : a Journal for the Science of Occupational and Environmental Health and Safety
|October 24, 2001
PubMed
Summary

This study experimentally investigated rectangular hoods under cross-drafts. The capture envelope

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Morphine augmentation increases gallbladder visualization in patients pretreated with cholecystokinin.

Journal of nuclear medicine : official publication, Society of Nuclear Medicine·1997
Same author

Right-sided cardiac tumors detected by transesophageal echocardiography and its usefulness in differentiating the benign from the malignant ones.

The American journal of cardiology·1997
Same author

Postoperative MRI of anorectal malformation.

Journal of the Formosan Medical Association = Taiwan yi zhi·1997
Same author

Value of somatostatin receptor scintigraphy: a prospective study in gastrinoma of its effect on clinical management.

Gastroenterology·1997
Same author

Blood levels of reduced haloperidol versus clinical efficacy and extrapyramidal side effects of haloperidol.

Progress in neuro-psychopharmacology & biological psychiatry·1997
Same author

The binge eating and emotional change in a patient with postinfectious encephalomyelitis.

The Kaohsiung journal of medical sciences·1997

Area of Science:

  • Fluid mechanics
  • Aerodynamics
  • Ventilation engineering

Background:

  • Cross-drafts significantly impact the performance of exhaust hoods.
  • Understanding suction field dynamics is crucial for effective ventilation design.

Purpose of the Study:

  • To experimentally investigate the suction fields of rectangular hoods under cross-draft conditions.
  • To characterize the influence of aspect ratio and cross-draft velocity on hood performance.

Main Methods:

  • Experimental study using a hood model and wind tunnel assembly.
  • Measurement of velocity fields using a two-component laser Doppler anemometer.
  • Analysis of the capture envelope defined by the dividing streamline.

Main Results:

Related Experiment Videos

  • The capture envelope is determined by the cross-draft to hood-suction velocity ratio (R) and hood aspect ratio (AR).
  • Hoods with aspect ratios < 1 exhibit different flow characteristics compared to those with aspect ratios > 1.
  • Square and circular hoods with equivalent areas show similar normalized capture zone dimensions.

Conclusions:

  • Aspect ratio and cross-draft significantly influence hood suction fields.
  • Geometric similarity in capture zones exists between square and circular hoods under specific conditions.
  • Findings provide insights for optimizing hood design in cross-draft environments.